6. Patient Preparation and Draping Flashcards

1
Q

When preparing a patient, how do we remove hair?

A

clipping is performed in the induction area once the patient has been stabilized under anesthesia - be comfortable with their lvl of anesthesia b4 manipulating
An old green scrub gown or lab coat is usually worn went he patient is being clipped
Hold the clippers in a pencil grip - grip permits the greatest amount of control and maneuverability, clipper blade should lie flat on patient’s skin for the closest clip
Hand not holding clipper can tense skin to encourage as easy a movement as possible for clipper
Ensure area clipped is neat, tidy, symmetric
Clippers need to be cleaned and oiled as directed on product instructions

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2
Q

How much hair do you remove for surgery?

A

Clip more vs less - in long hair, you can clip hair that may fall onto field
Amount removed depends on sx performed
General soft tissue injury ex, rule of thumb is to clip two clipper blade widths in every direction from proposed incision site
in orthopedic sx, patient is clipped more extensively (joint above to joint below) - limb needs to be clipped circumferentially to allow complete lime draping and manipulation
Do not use clippers on scrotum, cause clipper burn

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3
Q

Why is brushing loose hair away from the clipped site not acceptable?

A

Must be vacuumed - won’t collect it all, hair aerosolized easily

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4
Q

How do we clip LA?

A

determine the incision site - surgeon’s specificiations
Standing bovine - clipped prior to entering sx usin a #40 blade
Equine - clipped once the animal has been anesthetized In the induction area

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5
Q

How might we cause clipper burns?

A

clipper blades are dull
technique is harsh
excessive pressure is used

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6
Q

What do we check on clipper blades before use?

A

Chipped or missing teeth, rust, anything else that may hinder their performance

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7
Q

What negative effects can irritation of the skin cause?

A

inhibit sx site healing if over sx site
Promote bact growth leading to possible infection of sx site
Promote excessive licking which compromises healing process

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8
Q

What is the protocol for cleaning clippers?

A

After using clippers spray w/ clippercide
remove all debris from clippers + blade w/ a brush
Remove blade from the clipper
Place dirty blade and brush in to barbicide - keep on for min 10m
When placing a new blade on clipper from the barbicide, wipe the blades dry w/ a cloth removing any excess liquid and spray w/ clippercide

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9
Q

When prepping a patient, why is expressing the bladder

A

Urinary bladder should be manually expressed prior to performing the surgical skin prep
Will help to prevent iatrogenic trauma to the bladder when the abdomen is entered
Bladder expression is necessary to prevent patient from peeing during surgical procedure
if urinate during sx, will soak table linens, fur and skin - will cause urine scald if laying in there for long time
Inc risk of contamination of sx wound if urination occurs post operatively

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10
Q

What is the manual bladder expression technique?

A

bladder expressed w/ patient either in dorsal or lateral recumbency
Some type of receptacle like kidney bowl to collect urine - done to avoid saturating fur w/ urine or having urine pool under animal
use gentle, constant pressure rather than a pulsating action when applying pressure to bladder

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11
Q

What is the purpose of a surgical site prep

A

to render the skin as clean as possible to minimize risk of wound infection
Multiple options of antiseptics, rinsing agents, and applicators that can be used to prepare the skin for surgery

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12
Q

What are two antiseptics used in surgical site preparation?

A

Providone-iodine
chlorhexidine gluconate

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13
Q

What are the differences btw povidone-iodine and chlorhexidine gluconate?

A

Povidone-iodine: Bacteri/viralc/fungicidal and fungistatic - residual effect
Relatively low tissue toxicity
Generally dilute 50:50 w/ water as patient scrub
CHLORHEX: bactericidal action against 30 bact genera, viri/fungicidal - residual effect
Low tissue toxicity - except for MM
generally 60:40 w/ water

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14
Q

What are some rinsing agents for surgical site preparation?

A

70% isopropyl alcohol
Sterile water or saline

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15
Q

What are some properties of 70% isopropyl alcohol as a rinsing agent?

A

effective against most G- bact
coagulates proteins, so contraindicated on open wounds and MM
Enhances residual properties of chlorhex
Rapid evaporating - hypothermia
Do not use if electrocautery will be used intraoperatively

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16
Q

What are some properties of sterile water/saline as a surgical site preparation

A

removes detergent but has no antimicrobial properties
used to prep open wounds, compound fractures, or MM when alcohol is contraindicated

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17
Q

What are some surgical site preparation applicatiors

A

Gauze sponge
Cotton balls/tipped applicators - when only prepping small areas
Spray bottles - only for final pain solution, messy

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18
Q

How do you prep a male dog for abdominal procedures?

A

Required when prepuce will be in the draped surgical field and performed prior to beginning the surgical site prep
After all hair removed from prepuce, sheath must be flushed to remove potential contam as followed:
1. combine 1ml of providone-iodine sol. w/ 9ml of water
2. insert syringe tipe into prepuce, inject 5ml of sol.
3. Pinch prepuce around syringe tip b4 removing syringe
4. Gently massage sol. in the prepuce
5. Place towel over end of prepuce to absorb sol.
6. Release the pinch hold on the prepuce
7. Repeat process w/ remaining 5ml sol.

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19
Q

What two types of patterns are there for scrubbing

A

target: bullseye pattern, abdominal, thoracic, neurological procedures
Orthopedic: added step of covering foot w/ exam glove - caution to avoid creating a tourniquet w/ tape holding the exam glove in place

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20
Q

What is the perineal surgical prep?

A

Pattern is 3 separate target (like a venn diagram)patterns performed in a specific sequence
A purse-string suture placed in anus b4 prep to prevent pooping - avoid anal glands
WE MUST REMOVE AFTERWARDS
One-step prep enhance skin adherence of incise drapes: region will be flammable until dry

21
Q

How/why might chemical related reactions happen during surgical prep

A

Generally manifest as plaques or wheals
Certain breeds (labradors and share pei’s) tend to be more prone to these reactions
Providone-iodine tends to cause more reactions than chlorhexidine
patient has a chemical-related reaction, it should be recorded in their medical record

22
Q

What is the final (sterile) surgical site prep?

A

Performed in surgical room once the patient has been properly positioned and secured to the surgery table
same procedure except that it is performed in a sterile manner - wear sterile gloves (open glove technique) and use a sterile prep set up

23
Q

What are “solutions” in surgical site preparation?

A

Final (sterile) surgical site prep application of solutions
“Paint”, final step in surgical site preparation

24
Q

How is final (sterile) surgical site preparation application of solutions done?

A

Solutions “paint” are final step in surgical site prep
differs from scrub in that it doesn’t contain a detergent
efficacy improves if air dry b4 draping
If using spray bottle as an applicator - 1st squirt should be directed into the kick bucket to “clean” the nozzle of debris and bacteria
- providone-iodine: stronger conc of iodine than the scrub
Chlorhexidine gluconate - 0.2% concentration
REMEMBER - never mix scrub and paint products

25
Q

Can you mix scrub and paint products

A

NEVER

26
Q

How do we surgically prep large animals?

A

Routine sx prep performed prior to patient entering sx suite
Sterile prep very similar to SA once animal has been moved to sx suite
Supplies: bucket of tap water, scrub brush, plastic container, scrub soap, spray solution (iodine/chlorhex), alcohol

27
Q

Explain how scrubbing LA patients is different than SA

A

sx site scrubbed w/ scrub soap and a brush, water rinse after each scrub until site is clean using target pattern
Sm container to dip into bucket of water - brush rinsed off after each scrub by pouring water over brush from sm container. Brush not rinsed IN bucket as that water is to remain clean for further prep
Cleanliness of patient skin determined by alcohol-soaked gauze over the area - examined for debris or hair, if any seen, site is rescrubbed, continued until alcohol-soaked guaze appears clean

28
Q

Once you are done the scrub soap on LA, what three more preps are required?

A

3 more preps done using scrub soap, rinsing w/ alcohol btw each scrub - rinse brush w/ water btw each scrub
Alcohol is poured into operative site beginning at incision site and working towards contaminated area
Sterile prep done in sx suite - alcohol may be poured over operative site rather than wiped using sterile gauze sponge
Finally, paint solution sprayed onto operative site to complete sterile prep

29
Q

What is hypothermia?

A

Thermal homeostasis by modulating flow of blood to organs, viscera and skin via vasoconstriction or dilation
Most lose heat while anesthetized
Mild hypothermia - body temp no lower than 36c is expected, usually tolerated by patient
Body temp below 34 is worrisome and can affect patient’s recovery adversely
Sm patients are greatest risk bc of sm body surface-mass ratio - most heat loss occurs within first 20m of GA

30
Q

Can you give examples of things that we do prior to, and during surgical procedures that can lead to body heat loss and potential hypothermia?

A

shaving them
site cleaned w/ water > alcohol > cools quickly
Anesthetic gas cold bc of compression of O in tank
admin of room temp fluids
opened body cavity exposing internal organs to room temp air
patient laing on a metal table/grate

31
Q

What are some ways to maintain a patient’s body temp

A

circulating warm water pad, warm air convector blanket, heating coils, microwave heat pad, plastic bottle of heated uncooked rice, warm IV fluids (can warm bag or run line thru a bowl of warm water or fluid warmer b4 passing into patient), plastic bubble wrap around extremities and head

32
Q

How do we prep a warming device for surgery?

A

placed away from surgical site
ay need to be in place b4 patient is moved into surgery
inflatable warming devices must be remain turned off until the patient is draped

33
Q

How do we prep a electrocautery plate for surgery?

A

need to be in direct contact w/ patient at all times
poor contact affects function

34
Q

Explain what positiioning is

A

decribed by the body region contacting the table

35
Q

What are some patient positioning factors that determines positioning

A

sx approach, sx to be performed - in orthopedics, affected leg often suspended from an overhead support or IV stand
Draping technique, # of sx’s

36
Q

What is sterile drape placement?

A

placed AFTER site prep is completed
Provides an impervious barrier

37
Q

What are supplies required fro draping?

A

quarter drapes, towel clamps, single lg drape

38
Q

What regions have specific draping?

A

abdomen, thorax, extremity “hanging limb”, spine, perineum

39
Q

What is the quarter drap technique

A

open away from table > top of drape folded AWAY from you > corners are rolled outward to wrap around palms and minimize risk of contam of gloves > float drape over patient - do not drag over patient > drap is placed close to incision site

40
Q

How are quarter drapes secured?

A

penetrating towel clamps used to secure the drapes to the patient and to each other
Once placed, towel clamps and drapes can not be moved

41
Q

What is final draping?

A

Lg final drap - covers patient and sx table
Placing the drap is a sterile procedure - 1-2 people, add fenestrations (if needed) after draping

42
Q

What are some additional drapes that may be placed?

A

attached to the incision - sticky drapes
Placed near the incision - stockinettes (shown)
Sterile field contamination - add sterile drapes, replace garments

43
Q

What is the hanging limb technique?

A

place a stockinette and secure to the patient w/ tape
use tape to secure the distal end of the limb to the IV pole
Place quarter drapes around base of limb
A sterile drape is applied to the distal limb to allow manipulation of the foot
Sterile outer layer of a self-adherent wrap is placed over the distal limb
A fenestrated drape is placed over the quarter drapes

44
Q

How do we prepare an equine patient

A

Positioning: minimum of 3 personnel to position, overhead hoist systems are needed
Skin prep: clip done w/ electric razor in surgical suite - hair collected in vacuum. After initial skin prep, 3-5 surgical scrubs performed, spray with chlorhex sol., prepuse sheathed packed w/ gauge and sutured with a purse string suture

45
Q

What is the purpose of draping for abdominal surgery in large animals, what is required?

A

to minimize contam of sterile surgical site
req: aseptic prep, aseptic gowns and gloves, req >2 people

46
Q

How do we drape an abdominal surgery in large animals?

A
  1. Aseptic prep, sterile stockinettes or leg draps over hindlimb, hand towels placed in a four-quarter fashion around the incision site
  2. Lg laparotomy drape - people on each corner, unfold drape over horse, unfold w/ a backward step, unfold longitudinally
  3. Towel clamp, cover exposed clamps w/ guaze sponge, adhesive impervious drape over incision site, adhesive spray
47
Q

What might we do in orthopedic surgeries in large animals

A

electrocautery plate - beneath patient, connect cords
Impervious plastic drapes - have an adhesive, placed over the surgical site, they reduce strike-thru contam

48
Q

How do we drape for orthopedic surgery large animal?

A
  1. Limp prep - suspend to IV pole, aseptic prep done, proximal area of limb draped
    2.Remove limb from IV pole - grap limb (over non-prepped area), place a sterile surgical glove or towel over hoof, towel of stockinette placed over limb
    Place fenestrated drap - limb fed thru, placed, secured w/ towel clamps
49
Q

Where do breaks in sterility commonly occur?

A

during draping, surgical/instrument table setup
Remember: back of surgical gown is NOT sterile
Lower/raising hands above waist/shoulder