Basics of Surgery - Oral topics Flashcards

1
Q

List the periods of the history of surgery! What were the milestones!

A

3 periods
I. From the primeval times until the middle of the 19th century
*Only removal of injured parts was used

II. From the discovery of narcosis (16.10.1846) until the 1960s
* Included not only removal of the injured parts, but also their reconstruction
* The milestone was the initiation and application of the principles of
asepsis and antisepsis, discovery of blood groups and the development of intensive therapy

III. Lasted from the 1960s until today
* The development of instruments, natural science, researchers, as well as technical development

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2
Q

When was the “Ether Day”? Who did and what on this day?

A

On October 16. 1846 Dr. William T. G. Morton anesthetized a patient with ethyl ether for
the first time

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3
Q

When and by whom was the chlorinated lime hand-­‐washing introduced? What were his
findings?

A

Ignaz Semmelweis 1847

Doctors went from autopsy to child-delivery, maternal mortality went from 30%→1%

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4
Q

Who created the “antiseptic theory”?

A

Joseph Lister

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5
Q

Who introduced the “antiseptic theory” in hungarian surgery?

A

Hümer Hütl

(note that Marius and Stine were wrong on this answer! Check the department book and you can find it. However, this question on the topic list has now changed to not include “in hungarian surgery,” so it’s not totally clear)

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6
Q

Name 4 surgical instruments which refer to doctors involved in the development of
surgery!

A
  1. Kocher clamp
  2. Lumnitzer clamp
  3. Hagar needle holder
  4. Péan clamp
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7
Q

What does the acronym “NOTES” mean?

A

NOTES

Natural Orifice Transluminal Endoscopic Surgery

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8
Q

What is the definition of surgical intervention?

A

A procedure performed on a living body usually with instruments for the repair of damage or the restoration of health and especially one that involves incision, excision, or suturing

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9
Q

What do the septic and aseptic operating theatres stand for?

A

In the septic operating room the infected parts of the body are operated (e.g. purulent wounds, gangrenes)

In the aseptic operating rooms the danger of bacterial infection does not usually exist (e.g. varicectomy)

(There is no need to build the aseptic operating room in a separate area; the two different types can even share a common corridor)

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10
Q

How shall the staff and the patient enter the operating room?

A

Before entering into the operating room you should change your clothes in the locker
room and wear the surgical cap and the face mask
Following this, you can enter into the surgical territory
The patients are brought into the operating room after passing through a separate locker
room

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11
Q

Describe the structure of the operating room!

A

The operating room is 50-70 m2 , and does usually not have any windows
It is lighted and its walls are covered with light-colored tiles up to the ceiling
There is artificial ventilation and air-conditioning
The operating complex must be architecturally separated from the wards and the intensive care unit, but should be in the vicinity of the ICU

The complex consists of:

  • Locker rooms
  • Scrub-­‐up area
  • Preparing rooms
  • Operating theatres

The walls and floor of the operating room have no gaps, so they can be cleaned easily (antiseptic gap-­‐free floors)
The doors are automatic, and the rooms are equipped with central and portable vacuum systems, as well as pipes for gases

Main layout:
Operating lamp, operating table, Sonnenburg’s table, supplementary instrument stand, kickbucket, suction apparatus, diathermy, microwave oven, portable X-ray, anesthesia machine, and other instruments required during anesthesia

The central supply of electricity is automatically connected to batteries

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12
Q

List 8 equipments /instruments within the operating room!

A

Operating lamp, operating table, Sonnenburg’s table, supplementary instrument stand,
kick bucket, suction apparatus, diathermy, microwave oven, portable X-ray, anesthesia
machine, and other instruments required during anesthesia

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13
Q

Explain the rules of behaviour in the operating room!

A

1) Only those people whose presence is absolutely necessary should stay in the OR
2) Activity causing superfluous air flow (talking, laughter, or walking around) should be avoided

3) Entry into the OR is allowed only in operating room outfit and shoes worn exclusively in the OR
a. This complete change to the clothes used in the OR should also apply for the patient placed in the holding area (i.e. locker room)

4) Leaving the OR in surgical outfit is forbidden
5) The doors of the OR must be closed
6) Movement into the OR out of the holding area (locker room) is allowed only in a cap and mask covering the hair, mouth, and nose

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14
Q

Describe the general rules of the aseptic operating room!

A

Only sterile instruments can be used to perform a sterile operation

Only Sterile personnel can handle sterile equipment

Instruments which are located below the waist arenot considered sterile

If a sterile instrument comes in contact with aninstrument of doubtful sterility, it will lose its sterility

The edges of boxes and pots can not be considered sterile

A surgical area can never be considered sterile
However, the applications of aseptic rules of operations are mandatory

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15
Q

Explain the definition of asepsis!

A

Includes all the procedures, activities and behaviors designed to keep away the microorganisms from the patient’s body and the surgical wound

In other words, the purpose of asepsis is to prevent contamination (maintain sterility)
In a wider sense, asepsis means such an ideal state when the instruments, the skin, and the surgical territory do not contain microorganisms (prevention)

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16
Q

Explain the definition of antisepsis!

A

Includes all those procedures and techniques designed to eliminate contamination (bacterial, viral, fungal) present on objects and skin by means of sterilization and disinfection

Because skin surfaces and so the operating field and the surgeon’s hands cannot be considered sterile, in these cases we do not talk about superficial sterilization

In a wider sense, antisepsis includes all those prophylactic procedures designed to ensure surgical asepsis (treatment)

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17
Q

How to prevent the evolution of postoperative wound infections before the surgery?

A

Careful scrub and preparation of the operative site (cleansing and removal of hair) is necessary

Wearing sterile clothes in the OR

Knowledge and control of risk factors (e.g. normalization of the serum glucose level in case of diabetes mellitus)

In septic and high-­‐risk patients: perioperative antibiotic prophylaxis

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18
Q

How to prevent the evolution of postoperative wound infections during the surgery?

A

Appropriate surgical techniques must be applied

Change of gloves and rescrub if necessary

Optimize body temperature of the patient

Narcosis may worsen thermoregulation
Hypothermia and general anesthesiabothinduce vasodilation, and thus the core temperature will decrease

The oxygen tension must be maintained

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19
Q

How to prevent the evolution of postoperative wound infections after the surgery?

A

Wound infection generally evolves shortly (within 2 hours) after contamination

Hand washing is mandatory and the use of sterile gloves is compulsory while handling wound dressings and changing bandages during postoperative care

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20
Q

What is the definition of sterilization!

A

To sterilize means to kill all microorganisms and spores to create a germ-­‐free environment

Methods:
o Autoclave (steam with high pressure)
o Gas sterilization with ethylene-­‐dioxide
o Cold sterilization with sprecide chemicals
o Gamma and electron radiation
o Plasma sterilization (low temperature
hydrogenperoxidegasplasma - effect of free radicals)

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21
Q

What is the definition of disinfection!

A

The aim is to decrease the number of or inactivate live microbes

Methods:
o Low temperature steam
o Chemical disinfectants (phenol, chloride containing compounds, alcohols)
Surgical hand-scrubbing is considered a disinfectingprocedure.

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22
Q

Explain the steps of the two-­‐phase surgical hand scrub!

A

1st Phase: Mechanical cleansing
o Wash the hands and forearms thoroughly with soap and warm water
o The first phase has no time limit, only until we are satisfied
o Make sure to wash off all the soap, the disinfectant used in phase two is not
supposed to foam, so if during phase 2 foam appears on your hands, you have not
washed properly in phase 1 and will lose points
o Use tissue paper to dry carefully

2nd phase: Disinfectant phase 
o Disinfectant hand scrub should be rubbed on your hands 5 x 1 min 
o The disinfectant area should extend to the elbow and get shorter and shorter for 
each scrub 
1st time: Whole forearm
2nd time: 2/3 of the forearm 
3rd time:  1/2 of the forearm 
4th time: 1/3 of the forearm 
5th time: only hands and wrists
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23
Q

What is the purpose of isolation? How do we do it?

A

After skin preparation the operating area must be isolated from the non-­‐disinfected skin surfaces, and body areas by application of sterile linen textile or sterile water proof paper drapes

The main aim is to prevent contamination from the patients skin
It is generally done with the help of 4 pieces
The scrub nurse and the assistant use a special specially folded first, big sheet to isolate the patient’s legs
The second, horizontal sheet is used to isolate thehead, and is fixed to the guard
Placement of the two sided sheets then follows
The isolated area is always smaller than thescrubbed area
4 Backhaus towel clips will fix the isolating sheets

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24
Q

List the basic surgical instrument groups!

A
  1. Cutting and dissecting instruments
  2. Grasping, clamping and occluding instruments
  3. Hemostatic instruments
  4. Refracting and exposing instruments
  5. Wound-­‐closing instruments and material
  6. Special instruments
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25
Q

What is the function of the dissecting instruments? List some of these dissecting
instruments!

A

Their function is to cut or dissect the tissue and remove the unnecessary tissues during surgery
Scalpel
Scissors (straight/curved blunt/sharp)
Hemostats used for tissue preparation (can be dissecting, grasping, or hemostasis)
Dissector
Diathermy knife
Ultrasonic cutting device
CUSA (cavitron ultrasonic surgical aspirator)
LASER (light amplification by stimulated emission radiation)
Amputating knifes, saws and raspatories

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26
Q

Explain the use of electric/diathermy knife! What kind of diathermy knifes do you know?

A

Dissects tissue with the help of heat which is generated by electrical current
During the dissection the heat can also coagulate the blood from vessels, giving it a strong advantage by cutting and hemostasis simultaneously

They can be either mono- or bipolar
Bipolar: the electric current is passing between two parts of the instrument e.g. bipolar forceps
* There is a need for smaller voltage and amperages making it possible to perform more precise work and smaller size of burned area

Monopolar: the electric current is passing between the instrument and an indifferent electrode placed beneath the back or one of the limbs of the patient e.g. electrocauter or electrocautery knife
More common in general surgery
(OBS: pacemakers)

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27
Q

Is it accepted to use electric knife on patients with pacemaker?

A

regarding monopolar electric knives
In patients with old pacemakers the electrical current may cause arrhythmias, and it
must therefore be adjusted prior to surgery

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28
Q

What do you know about the ultrasonic cutting device?

A

Ultrasonic cutting device (Ultracision) is using ultrasound to cut and coagulate the tissues
It is working similarly to the diathermy but it does not cause thermic injury
It makes possible to have more precise movements during surgery

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29
Q

Name the non‐locking grasping instruments! Explain their functions!

A
The non-­‐locking grasping tools are the Thumb forceps 
A. Smooth forceps
B. Toothed forceps
C. Splinter forceps
D. Ring forceps (brain tissue forceps)
E. Dental forceps

o The simplest form of grasping tools made of different sizes
o They can have blunt (smooth), sharp (splinter) or ring tips
o They are used to hold tissue during cutting and suturing
o The smooth forceps is also called anatomical forceps, the toothed forceps is also called surgical forceps and the splinter forceps is also called ophthalmic forceps
o The forceps should be held like a pencil, compressed between the thumb and index finger
o For holding skin and subcutaneous tissue the toothed forceps is most used
o For holding of sponges, bandages, vessels and hollow organs use the anatomical forceps
o The forceps is not suitable for long continuous grasping and the tissue graspers should be used for this purpose

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30
Q

List organ clamps!

A

These are instruments used for delicate grasping and holding of the organ

  1. Klammerintestinal clamp,
  2. Gallbladder clamp
  3. Babcock forceps (gallbladder)
  4. Allis clamp (lungs)
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31
Q

List the hemostatic instruments! Explain their functions!

A

Vascular clamps (Péan, mosquito, abdominal Péan, Kocher, Lumnitzer, Satinsky, bulldog),
Electrocautery knife, various ligation needles and directing probes (e.g. Deschamp ligation needle, and Payr probe), and argon beam coagulator

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32
Q

List the retracting instruments! Explain their functions!

A

Retractors are sued to hold tissues and organs aside during surgery in order to improve
the exposure, visibility and accessibility

Hand-­‐held retractors
o Skin hook, rake, Roux, Langenback, visceral and abdominal wall retractors
o Held by assistant
o Cause minimal tissue damage because tension is maintained only for as long as necessary

Self-­‐retaining retractors
o Weitlaner self-­retaining retractor, Gosset self-retaining retractor
o Of great help when applied correctly
o Damage to tissues can occur if not used carefully when placed and removed

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33
Q

Explain the application area of metallic clips!

A

The Michel clips can be used with the help of a Michel clip applicator or remover
They are used to close a skin wound and any luminal structure, vessel, duct etc.
Other uses:
In the wound stapler making it possible with atraumatic and fast wound closure
In hemostasis (can occlude lumen)
As a marker because it can be seen on the X-­‐ray (e.g. bed of a tum0er

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34
Q

What do you know about the CT and MRI examination of patient carrying metalic clips?

A

CT:
The clip disturbs the picture only in the vicinity of it and so examination can be done

MRI:
The clips make it impossible to perform the examination because these metals
can move in the magnetic field
The clips can become wandering within the body
Due to this it has become more common to use the non-­‐magnetic clips like
titanium, platinum and absorbable clip

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35
Q

What is the Steri-­Strip? When to use it?

A

Usually produced from fibrin, collagen or thrombin and induces the last phase of blood coagulation producing fine fibrin mesh

Application
o Hemostasis in operations done on solid organs
o Close the place of air leakage in lung surgeries
o Wound closure

Disadvantage: can increase the degree of infection in infected wounds and lead to abscess formation

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36
Q

List special instruments!

A

Volkmann curette
Main application:
*Skin tags, e.g. condyloma, warts, removal
*Clean the base of the infected wound
*Remove infected bone in case of osteomyelitis

Round-­‐ended probe
Use to gauge depth or direction of a sinus or cavity

Payr clamp (crushing)
Use it before resecting the intestine

Suction set

X-­‐raying set

The metallic screws and pins, joint prosthesis, hernial meshes, vascular grafts and silicon implants

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37
Q

Describe the conventional (close-­eye, French-­eyed) needles!

A

Needs to be threaded
The needle and two arms of the thread goes through the tissue
Danger of untying
Re‐sterilization

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38
Q

Describe the atraumatic needles!

A

Has less thickness going through tissue due to no arms of the thread, resulting in less tissue damage
The thickness of the thread is slightly thicker than the whole made by the needle, making the tissue pack around the thread and avoiding leakage
-No threading time
-No re-­sterilization
-­No danger for corrosion and untying
-­Be careful to not pull to hard, the thread may detach from the needle

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39
Q

What are the main groups of the circular needles?

A

Has 3 main groups; taper-­point, taper‐cutting and blunt tape
-­Circular needle classically refers to taper-­‐point circular needle
Both the tip and the body of the needle are circular. The needles are so thin that they separate tissue fibers without cutting them
They are generally used in easily penetrable tissue, like peritoneum, abdominal organs, myocardium, and subcutaneous tissue

At the tip of the taper-­‐cutting needle there are 3 cutting edges

  • ­The edges gradually becomes more flattened and are finally obliterated at the body
  • ­They are developed to sew sclerotic, scarred and classified tissues
  • ­The diameter caused by the needle is smaller than the thread

The blunt taper needles have a circular body and a blunt end
It serves to prevent the danger of needle stick and is used a lot in patients with HIV or hepatitis
The tissues are pushed aside and no separating in their structure is caused

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40
Q

Explain the difference between conventional and reverse cutting needles!

A

In the conventional needle the third edge is facing the internal part of the curving body
In the reverse needle the third edge is facing the external part of the curving body

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41
Q

What are the main characteristics of the surgical suture materials?

A

Physical: caliber, tensile strength, elasticity, capillarity, structure, water absorbent capacity, sterilizability

Application properties: flexibility, capability to slip in tissue, knotting properties, knot security

Biological properties: absorbent capacity

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42
Q

What are the advantages and disadvantages of natural and synthetic suture materials?

A

Natural materials have good knotting
properties and are easy to handle
The main disadvantage with natural
substances is that they contain proteins, which our immune system will target as non-self
They are absorbed by macrophages and other phagocytic cells leading to a strong inflammatory response
Most synthetic materials cause only small reactions in the living tissues
Their absorbance is done by hydrolysis and there will be no cellular response and tissue damage

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43
Q

What does the term “thread memory” stand for?

A

Thread memory is the capacity of the suture thread to return to its former, packaged shape

(monofilaments have thread memory)

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44
Q

What are the advantages of monofilament threads?

A
Smooth surface
Smaller friction
Smaller resistance
Smaller tissue injury
No spreading of bacteria
No capillarity
Not transporting the tumor cells
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45
Q

What are the disadvantages of multifilament (twisted or braided) threads?

A
Stretching
Tissue drag,serrating
Tissue trauma
Spreading of bacteria
Capillarity
Transporting the tumor cells
46
Q

Which one is better: monofilament or multifilament thread?

A

Monofilament due to less disadvantges, less tissue, trauma, no spread of abcteria and no spread of oncotic cells

47
Q

Describe the enzymatic and hydrolytic absorption processes of suturing materials!

A

Enzymatic is active and done by cellular elements, it is characteristic for natural suture materials
The result can be severe tissue reaction and activation of the inflammatory processes

The hydrolysis is passive and done without participation of cellular elements
It is characteristic for synthetic suture materials
The chemical and physical bonds located between the thread fibers will become loose, disintegrating the thread, which will be excreted

48
Q

What do you know about the size classification of the suturing materials?

A

The USP (United States Pharmacopoeia) is used here in Hungary
It groups the suture materials I groups based on thickness
Thinnest: 11/0 (= 0,01 - 0,019 mm)
Thickest: 7 (1.0 - 1,09 mm)

Metric system:
Thinnest: 0,1 (= 0,01 - 0,019 mm)
Thickest: 10 (1.0 - 1,09 mm)

(christ the americans are retarded)

49
Q

What do you know about the simple interrupted suture?

A

Frequently used to suture skin, fascia and muscle
After each stitch, a knot is tied
All sutures must be under equal tension

The advantage is that the remaining sutures still ensure an appropriate closure and the wound will not open if one suture breaks or is removed

The disadvantage is that it is time-­consuming since each individual suture must be knotted

50
Q

What do you know about the vertical mattress suture?

A

It is a 2-­row skin suture
It consists of a deep suture that involves the skin and the subcutaneous layer (which closes the wound) and of a superficial back stitch placed into the wound edge (this approximates the skin edges)

The two stitches are in a vertical plane perpendicular to the wound line

51
Q

Where do we use the simple continuous suture line?

A

This can be applied to suture tissues without tension, the wall of internal organs, the
stomach, the intestines, and the mucosa

52
Q

Where do we use the purse-­sting suture?

A

The openings of the GI tract (e.g. in appendectomy) are closed by this suture
An atraumatic needle and thread are used
It is a suture for a circular opening, running continuously around the opening
The wound edges are then inverted into the opening with dressing forceps and the threads are pulled and knotted

53
Q

When it is suggested to remove the stitches? What are the influencing factors?

A

After careful disinfection of the wound, the suture is grasped and gently lifted up with a thumb forceps
The thread should be cut as close to the skin as possible so that no thread which was outside the skin can be pulled through the wound

This way, infection of the wound can be avoided

54
Q

What is a wound?

A

A wound is a circumscribed injury which is caused by an external force, and it can involve any tissue or organ
It can be mild, severe, or even lethal
can be divided into:
o Simple wounds
In simple wounds, skin, mucous membrane, subcutaneous tissue, superficial fascia, and the muscles (partially) can be injured

o Compound wounds
In compound wounds, there are additional injury to the muscles, tendons, vessels, nerves or bones

o Acute or chronic wounds

55
Q

What areas are injured in case of a simple wound?

A

Skin, mucous membranes, subcutaneous tissue, superficial fascia, and the muscles (partially)

56
Q

What areas are injured in case of a compound wound?

A

The components of the simple wound + additional injury to the muscles, tendons,
vessels, nerves or bones

57
Q

What kind of wounds do you know based on their origin?

A
Mechanical 
Chemical 
Wounds caused by radiation 
Wounds caused by thermal force 
Special wounds
58
Q

List the wounds of mechanical origin!

A
Abraded wound (vulnus abrasum) 
Punctured wound (v. punctum) 
Incised wound (v. scissum) 
Cut wound (v. caesum) 
Crush wound (v. contusum) 
Torn wound (v. lacerum) 
Bite wound (v. morsum) 
Shot wound (v. sclopetarium) 

fucking latin piece of shit

59
Q

What do you know about the incised wound?

A

vulnus scissum
Caused by a sharp object
Best healing of all the wounds

60
Q

What do you know about the shot wound?

A

vulnus sclopetarium
Consists of an aperture, a slot tunnel and a possible output.
If the shot is close (e.g. contact shot), burn injury may be present
Caused by foreign materials which may remain in the patient

61
Q

Classify the wounds according to bacterial contamination?

A

Clean - Normal skin flora, no inflamm

Clean-­contaminated - endogenous or environment, the surgical team, or the patient’s skin surrounding the wound.

Contaminated - (significant bacterial contamination):

Dirty wounds - the contamination comes from an established infection. Examples include:
residual nonviable tissues and chronic traumatic wounds.

62
Q

What does the primary wound managements stand for?

A

Surgical wound closure can be performed if maximum 12 hours is passed since the time of injury.
– cleaning,
– anesthesia,
– excision (< 6–8 h, exception: face, hand),

63
Q

What does the term „primary delayed suture” stand for?

A

In the following cases, after clearing of the wound and washing it with physiologic saline solution cover it with a sterile bandage and put it in rest. Four to six days later, you can apply the delayed sutures.
– signs of inflammation,
– the wound is strongly contaminated,
– the removal of the foreign body was not successful,
– shattered wounds with blind spaces,
– injuries of persons with especial jobs (e.g. surgeon, butcher, veterinarian, pathologist), and
– bite, shot, and deep punctured wounds.

Need to do: cleaning + covering and after 3-8 days delayed primary wound closure.

64
Q

What is the „early secondary wound closure”?

A

If following the first management of the wound, the excised wound -after inflammation and

necrosis- starts to proliferate, then there is a need to refresh the wound edges. 2 weeks after the

injury: anesthesia, excision (refreshment of the wound edges), suturing, and draining.

65
Q

What is the „late secondary wound closure”?

A

The proliferating former wound parts and scars should be excised. With greater defects, plastic

surgery solutions should also be considered. 4–6 weeks after the injury: anesthesia, excision (of

the secondarily healing scar), suturing, and draining.

66
Q

What holding positions of the scalpel do you know?

A

The fiddle-­‐bow holding grip, used for long, straight incisions
The pencil grip, used for short or fine incisions

67
Q

Describe the phases of wound healing!

A

Hemostasis-­‐inflammation (0‐2 days)
Granulation-­‐proliferation (3-­‐7 days)
Remodeling (lasts from day 8 → months)

68
Q

What is happening in the Hemostasis-­‐inflammationphase of wound healing?

A

Initial vasoconstriction
The wound fills with blood clot and platelet aggregates, and fibrin production develops
Signs of inflammation are present
Blood flow increases, macrophage and leukocyte mediators (pro-­‐inflammatory cytokines and growth factors) are released

The cytokines promote: 
 Angiogenesis 
 Fibroblast-­‐, T-­‐, and B-­‐cell activation 
 Keratinocyte activation 
 Wound contraction 
Removal of bacterial components
69
Q

What is happening in the granulation-­‐proliferation phase of wound healing?

A

Formation of granulation tissue and fibroblasts
Fibroblast migration à collagen deposition
Angiogenesis
Granulation tissue formation
Epithelization
Contraction

70
Q

What is happening in the remodeling phase of wound healing?

A

Regression of many capillaries
Physical contraction (by myofibroblasts)
Collagen degeneration and synthesis – the fibers become smaller and stronger
New epithelium is produced
The final tensile strength of the wound is ∼80% of the initial strength of the tissue

71
Q

Describe the types of wound healing!

A

Healing by primary intention:
The wound edges are brought together so that they are adjacent to each other
Minimizes scarring
Most surgical wounds heal by primary intention

Healing by secondary intention:
The wound is allowed to granulate – the wound may be packed with a gauze
The tissue loss is compensated by granulation tissue „according to the second potential goal of the doctor”
Due to abacterial or purulent inflammation, the wound is filled with connective
tissue which transforms into scar tissue

Compared to healing by primary intention:
Larger clot is formed
Inflammation is more intense because there is more necrotic debris, exudate and fibrin to remove
Larger amounts of granulation tissue due to larger defect
Involves wound contraction

Healing by tertiary intention
The wound is initially cleaned and observed, typically 4-­‐5 days before closure
The wound is purposely left open
Examples: healing of wounds by use of tissue grafts

72
Q

List the influencing/delaying factors of wound repair!

A
Local factors: 
o Ischemia 
o Infection 
o Foreign bodies 
o Edema, elevated tissue pressure 
Systemic factors: 
o Age and gender 
o Sex hormones 
o Stress 
o Ischemia 
o Diseases (e.g. DM) 
o Obesity 
o Medication (e.g. glucocorticoids and some antibiotics) 
o Alcoholism and smoking 
o Immunocompromised conditions 
o Nutrition
73
Q

What early complications of wound healing do you know?

A
Seroma 
Hematoma 
Wound disruption 
Superficial wound infection 
Deep wound infection 
Mixed wound infection
74
Q

What are the characteristics of the seroma?

A

The wound cavity is filled with serous fluid, lymph, or blood
Signs: fluctuations, swelling, redness, tenderness, subfebrility

75
Q

What are the characteristics of the hematoma?

A

Occurs due to insufficient bleeding control, short draining time, or anticoagulant therapy
Signs: swelling, fluctuations, pain, redness

76
Q

What are the characteristics of the wound disruption?

A

Subdivided into partial, superficial (dehiscence), and complete separation (disruption)
First, the deeper layers are involved and finally the skin
Can be caused by surgical error, increased intra‐abdominal pressure, wound infection, or hypoproteinemia

77
Q

What forms of superficial wound infection do you know?

A

Diffuse: a diffuse and superficially spreading inflammation located below the skin
o E.g. erysipelas and lymphangitis (caused by hemolytic streptococci)

Localized: localized (circumscribed) infection
o E.g. abscess

78
Q

List the local and general symptoms of wound infection!

A

Local signs:
o Rubor, tumor, calor, dalor, and functio laesa

General signs:
o Rapid sedimentation rate of RBCs, leukocytosis, fever, shivering, depression

79
Q

What are the late complications of wound healing?

A
Hypertrophic scars 
Keloid 
Necrosis 
Inflammatory infiltration 
Abscesses 
Foreign body-­‐containing abscesses
80
Q

What are the characteristics of hypertrophic scar?

A

Hypertrophic scars develop in areas of thick chorium
They are composed of non-­hyalinic collagen fibers and fibroblasts, and are confined to the incision line
They usually regress spontaneously within 1-­‐2 years

81
Q

What are the characteristics of keloids?

A

Keloids are over-­‐proliferations of collagen fibers in the subcutaneous tissue
They have well-­‐defined edges, with pinkish-­‐brown, emerging tough structures
They particularly affect scars o the presternal and deltoid areas, and the ear
They are characterized by subjective complaints (e.g. pain, itching) and constant development

82
Q

What is hemostasis and what are the factors of it?

A

Hemostasis is the process which causes bleeding to stop
-­‐ Factors:
o Vascular hemostasis (vasoconstriction)
o Platelet hemostasis
o Clotting

what the actual fuck is this question

83
Q

What are the characteristics of diffuse bleeding?

A

Oozing of blood from bare (denuded) or cut surfaces (can become serious if
uncontrolled)
o Capillary bleeding
o Parenchymal bleeding

84
Q

What could be the direction of bleeding from clinical point of view?

A

External (e.g. by trauma or surgical incision, resulting in visible bleeding)

Internal:
Internal (e.g. urinary tract: hematuria, respiratory tract: hemoptoa, GIT: hematochezia or melena).

Body cavities (intracranial hemorrhage, hemothorax, hemascos, hemopericardium, and hemarthros),

Among tissues (e.g.hematoma and suffusion).

85
Q

What methods of surgical haemostasis do you know?

A

Mechanical
Thermal
Chemical
Biological

86
Q

List the mechanical methods of surgical haemostasis!

A

Digital pressure (direct pressure)
Tourniquet (constricting or compressive device, specifically a bandage)
Ligation
Suturing
Preventive hemostasis (occurs in ligatures)
Clips
Bone wax

87
Q

List haemostatic methods based on thermal effects!

A

Low temperature:
o Hypothermia
o Cryosurgery

High temperature: 
o Electrocauterization 
o Monopolar diathermy 
o Bipolar diathermy 
o Laser surgery 
o Local electrosurgery
88
Q

What are the mechanisms of haemostasis based on chemical and biological materials?
List 3 materials!

A

Mechanisms:
o Vasoconstriction (e.g. epinephrine, oxytocin)
o Coagulation (microfibrillar collagen, thrombin)
o Hygroscopic effect (absorbable collagen, absorbable gelatin, oxidized cellulose)

89
Q

Give examples of vital, absolute, and relative indications!

A
Vital indications: 
o Ruptured aortic aneurysm 
Absolute indications: 
o Mechanical ileus, ebolectomy 
Relative indications: 
o Hernia repair
90
Q

What are the components of surgical risk?

A

Risk of surgery itself + anesthesiological risks

Low-risk surgery:(e.g. inguinal hernia repair), where the expected blood loss is less than 200 ml.

Medium-risk surgery: (e.g. colon resection), where the expected blood loss is less than 1000 ml)

High-risk surgery: Extended abdominal and thoracic operations (e.g. liver and lung resections). blood loss exceeds 1000 ml.

91
Q

What factors increase surgical risk?

A

Acute surgery
-­‐ Duration > 2 hours
-­‐ > 65 years old
-­‐ Pregnancy
-­‐ Malignant diseases
-­‐ Malnutrition
-­‐ Alcohol consumption
-­‐ Smoking
-­‐ Acute disturbances (hypovolemia, dehydration, shock)
Acute inflammations (respiratory, urinary, GI, sepsis)
-­‐ Thrombosis
-­‐ Acute organ insufficiencies (heart, lung, kidney, liver)
-­‐ Acute endocrine disorder
-­‐ Organ insufficiencies (heart, lung, kidney, liver)
-­‐ Endocrine disorder
-­‐ Immunological disorders
-­‐ Hemophilia
-­‐ Organ alterations (see below)
-­‐ Chronic disorder (hypovolemia, anemia)
-­‐ Chronic inflammations (respiratory, urinary, GI)
-­‐ Allergy

92
Q

What kind of organ alterations increase surgical risk?

A
Cardiorespiratory 
Hypertension 
Nervous system alterations 
Diabetes mellitus 
Chromic uremia 
Cirrhosis 
Susceptibility for infection 
Immunosuppression 
Thromboembolic predisposition
93
Q

In what way does overfeeding increase surgical risk?

A

Respiratory disturbance (usually restrictive):
o Deteriorating the gas exchange, increased respiratory function
-­‐ Decreased cardiac reservoirs
-­‐ Difficulty with intubation (regurgitation)
-­‐ Disturbances with wound healing
-­‐ Thromboembolism

94
Q

List the organs and systems whose preoperative examination is essential from the point
of view of the assessment of surgical risk!

A

Cardiovascular system

  • ­‐ Respiratory system
  • ­‐ Metabolic state
  • ­‐ Renal function
  • ­‐ Liver function
  • ­‐ Endocrine balance
  • ­‐ Homeostasis
  • ­‐ Immune system
95
Q

What can be applied for trombosis prophylaxis during pre‐, and postoperative phase?

A

Drugs:
o Heparin derivatives (Na-­‐heparin, Ca-­‐heparin, low molecular weight heparins)
o Platelet aggregation inhibitors (e.g. Aspirin, Colfarit)

Physical: 
o Early mobilization 
o Compression (elastic bandages) 
o Bed­‐side bicycle 
o Keeping the lower extremities at a high level
96
Q

List the forms of vertical laparotomy!

A
Medial laparotomy 
Paramedian laparotomy 
Vertical transrectal laparotomy 
Pararectal laparotomy 
Inguinal transmuscular laparotomy
97
Q

List the forms of transverse and oblique laparotomy!

A

Transverse:
o Horizontal transrectal laparotomy
o Pfannenstiel suprapubic

Oblique:
o McBurney incision
o Paracostal (Kocher) laparotomy
o Subcostal laparotomy

98
Q

What abdominal approaches would you suggest in case of open cholecystectomy,
appendectomy, or gynecological surgery?

A

Open cholecystectomy:
o Right paracostal laparotomy

Appendectomy:
o McBurney incision

Gynecological surgery:
o Lower median muscle-­splitting incision (Pfannenstiel incision)

99
Q

What do you know about the muscle-­‐splitting incisions? What are the advantages and
disadvantages?

A

In these types of incisions the fibers of the abdominal wall muscles are not cut but separated from each other alongside their courses

Advantage:
o The possibility for development of postoperative hernia is rare

Disadvantage:
o It gives a limited exposure and is helpful only in case of a sure diagnosis

100
Q

What does thoracolaparotomy mean? When it is used?

A

Creating a large incision from the lower axilla to the supra-­‐umbilical area (thoracoabdominal incision), opening the thoracic and abdominal cavities and exposing the diaphragmatic region
o Used in case of big tumors of the liver, renal tumors, possibly total gastrectomy, operations around the cardia region, esophageal tumors

101
Q

What factors did contribute to the spreading of laparoscopic operations?

A

The technical development, training operations and the patient’s increased demands for
the minimally invasive surgeries contributed to the wide spread

102
Q

What are the disadvantages of open surgery?

A

Big exposure, more trauma
Postoperative pain depends mostly on the size of the surgical wound
It is harmful to keep the body cavity open for a long time (due to vaporization, drying,
etc.)
Danger of secondary injuries during exposure (e.g. intestines, spleen, lungs)
Increased possibility for later adhesions
The bigger the wound, the bigger is the possibility for postoperative complications (e.g.
infections, hernias)

103
Q

What are the advantages of laparoscopic surgery?

A
Less postoperative discomfort 
Much smaller scars 
Less internal scarring 
Quicker recovery time 
Shorter hospital stays 
Earlier return to full activities
104
Q

What does pneumoperitoneum mean?

A

Insufflating the peritoneum with gas to create a workspace for the laparoscopic surgeon

105
Q

What kind of gas can be used for pneumoperitoneum?

A

Carbon dioxide and nitrous oxide are the preferred gases nowadays
o The first gas used was filtered room air, but this supports combustion, and so does N2O (so it is not used for prolonger procedures)
Helium can also be used, but it does not have any advantages over CO 2

106
Q

Introduce the usage of the Veres needle!

A

The Veres needle is used to create a pneumoperitoneum with the closed access technique
It is inserted blindly through the sub-­‐umbilical area and then used to create the pneumoperitoneum

107
Q

How and on what level of pressure can the pneumoperitoneum be used safely?

A

The best operating intra-­abdominal pressure is between 10-­15 mmHg
o 15-­20 mmHg is optimal, and actual pressures above 20 mmHg are dangerous (compression of IVC etc)

The insufflator will maintain an optimal actual pressure by constantly monitoring and make small changes in pressure to maintain the optimal pressure

108
Q

What type of telescope is popular in laparoscopy?

A

Hopkins rod lens system:
o The advantages are greater light transmission, better image quality, wider field of view and image magnification
o It utilized longer rods of glass and smaller air spaces between the lenses

109
Q

What do you know about the laparoscopic light sources?

A

Illumination of the abdominal cavity is important for orientation
Currently a 150-­‐300 W fan-­‐cooled xenon light source is used to provide color-­‐corrected light for extended period of time
The illumination is transmitted to the laparoscope via a flexible fiber-­‐optic light guide
The camera is connected to the optic, which transmits it to the monitor

110
Q

List the difficulties of the laparoscopic technique!

A
  • Two-dimensional approach and three- dimensional activity
  • Eye-hand coordination
  • Feeling the depth
  • Coordinated use of the dominant and non-dominant hands
  • Lack of the tactile sensation
  • Limited movement
  • Continuous care of the technical equipment
111
Q

How would you describe the main characteristics of patient safety in ambulatory surgery?

A

Outpatient surgery

  1. identify patient correctly (use at least 2 identifiers)
  2. use medicines safely: label medicines, take extra care with patients on blood thinners, take accurate medicine history
  3. prevent infections: improve hand hygiene, use proven guideline to prevent surgical site infection
  4. prevent mistakes in surgery: do correct surgery on correct patient’s body, mark correct place on patient’s body, pause before surgery to do time out
112
Q

What are the contraindications of ambulatory surgery?

A

Poorly controlled diabetes
History of substance abuse
Patients with uncontrolled seizure disorders
Susceptibility to malignant Hyperthermia
Potentially difficult airway
NPO (nil per os, withhold food & fluid) < 8h
No escort
Previous post –anesthetic Adverse outcomes
Significant drug allergies like latex
Risk for aspiration
Patients with obstructive sleep apnea (OSA)