Surgery Flashcards
How to assess capacity?
Four criteria required:
*Understand the decision
*Retain the information long enough to make the decision
*Weigh up pros and cons
*Communicate their decision
It is assessed based on each individual decision
It may fluctuate so sometimes decisions should be delayed so they can make the decision for themselves at a later time
What to do when somebody does not have capacity to make this decision?
Decisions are made in their best interest, taking into account their wishes and values
LPA - legally nominated person allowed to make decisions on someone’s behalf; only comes into effect if patient lacks capacity to decide for themselves
Deprivation of liberty safeguards - application made by hospital or care home for patients who lack capacity to allow them to provide care and treatment
What is acute resuscitation?
Cardiopulmonary resuscitation- chest compressions with artificial respiration; performed to maintain blood circulation and oxygenation in a person who has suffered cardiac arrest
When would you acutely resuscitate somebody?
After cardiac arrest
How to fluid resuscitate somebody.
Give fluid bolus of 500ml of crystalloid [0.9&NaCl] over less than 15m
Reassess with ABCDE
Give up to 2L in 250-500ml boluses, then seek expert advice
When to use blood when resuscitating somebody?
When a pt is losing blood
Replace like for like
How do you give blood to a patient?
Two large bore cannulae - grey cannula 16G
When would you keep a patient NBM?
Bowel obstruction
Surgery expected for treatment
Some scans may require patient to fast
What is VTE assessment?
Assesses a patient’s risk of forming a clot/VTE
If at high risk, then should receive prophylaxis [LMWH or compression stockings]
How do you complete a VTE assessment?
Follow local guidelines
Risk factors [any of these, must be given LMWH unless contraindicated]:
*anaesthetic + surgery time >90m
*>60 having minor surgery
*BMI >30
*history of VTE or 1st relative history of VTE
*thrombophilia
*malignant/infective or inflammatory disease
*varicose veins
*dehydrated
*totally immobile for >3days
*>60 and partially mobile for >3days
*taking/has taken oestrogen containing contraceptive/HRT in last 4weeks
*pregnant or <6wks post-partum
What steps do you undertake after completing a VTE assessment?
Prescribe prophylaxis [LMWH]
Prescribe compression stockings
What are some operation specific preparations?
Bowel prep
What is bowel prep?
Medical technique to cleanse the bowel
Performed by oral ingestion of medication or by enema
Name some types of bowel prep and how do they work?
Moviprep, Klean-Prep, CitraFleet or Picolax [sodium picosulphate] - all laxatives
When would you ask for an anaesthetics review pre-operatively?
All patients having an operation under general or regional anaesthetic require a pre-operative assessment
Pts are assessed to determine if they are fit enough to undergo the specific operation- explores their co-morbidities, risk from anaesthesia, frailty status, cardiorespiratory fitness
IV fluids - types
Crystalloids:
*0.9% sodium chloride
*5% dextrose
*0.18% sodium chloride in 4% glucose
*Hartmann’s solution
*Plasma-Lyte 148
Colloids
*Human albumin solution
Antibiotics given pre-op/intra-op/post-op
Mainly cefazolin; vancomycin; gentamicin
Analgesia - intra-/post-op
Morphine is used, alongside propofol, to help during the procedure
Many types of analgesia are used to control pain post operatively
Anti-emetics - why are they given
To help post-operative nausea and vomiting
Helps to put patients at ease
Anti-emetics - medications
Ondansetron [5HT3 receptor antagonist]; 4mg
Prochlorperazine [D2 receptor antagonist]; 3-6mg
Cyclizine [H1 receptor antagonist]; 50mg
Dexamethasone [unknown site of action]; 4mg
Anti-emetics - side effects
Ondansetron - risk of prolong QT interval, constipation
Prochlorperazine - extrapyramidal s/e - dystonic reaction
Thromboprophylaxis - medications
LMWH [enoxaparin]
DOACs [apixaban/rivaroxaban]
Anti-embolic compression stockings
Thromboprophylaxis - dose
LMWH - enoxaparin - 20-40mg/day
Thromboprophylaxis - side effects
Haemorrhage, heparin-induced thrombocytopenia, skin reactions, haemorrhagic anaemia, headache, hypersensitivity, thrombocytosis
Alopecia, hyperkalaemia, osteoporosis, spinal haematoma
What is the pre-operative surgical checklist?
It is a checklist aimed to reduce the risk of human error before/during/after surgery
It is checked before induction of anaesthesia, before first skin incision, before patient leaves theatre
Why is the pre-operative surgical checklist completed?
The aim is to reduce the risk of human error before/during/after surgery
What kinds of things are checked in the pre-operative surgical checklist?
Involves multiple members of the team [theatre nurse, anaesthetist and surgeon] checking essential factors, such as:
*Patient identity
*Allergies
*Operation about to be performed/just been performed
*Risk of bleeding
*Introductions of all team members
*Anticipated critical events
*Counting the number of sponges, needles, other equipment to ensure nothing is left inside the patient
Name some devices used for airway management.
Endotracheal tube
Laryngeal mask airway
i-gel
Oropharyngeal airway
Nasopharyngeal airway
Endotracheal Tube - when to use
Ensuring airway patency for ventilation
Preventing aspiration
Inability to protect own airway and/or ventilate
Endotracheal Tube - when is it not appropriate?
Severe trauma or airway obstruction proximal to the point at which tube will be passed [pharyngeal foreign body, massive swelling of the pharynx]
Endotracheal Tube - complications
Damage to lips, teeth and oropharynx
Over-inflation of the cuff may cause high pressure on tracheal wall - ischaemia
Under-inflation of the cuff may lead to a circuit leak
Misplacement/dislodgement of ET tube may lead to hypoxia and death
Endotracheal Tube - how to check it is working/in the correct space
Auscultate chest
Visualisation of thoracic movement
Fogging of the tube
CO2 end-tidal detector
Laryngeal Mask Airway - when to use and when not to use
Mainly used for inhalational anaesthesia
Supporting the airway sparing tracheal intubation
Don’t use when definitive airway is indicated; perioperative airway management when there’s risk of aspiration, muscle relaxation required and prone position in surgery
I-Gel - when to use and when not to use
Mainly used for inhalational anaesthesia
Quick and easy to use, able to provide high seal pressures, less trauma, routine gastric port for NGt insertion to reduce aspiration risk
– trismus, airway trauma/abscess/mass, obstruction below glottis, conscious/semi-conscious patients with in-tact gag reflex
Oropharyngeal airway [Guedel] - when to use and when not to use
Unconscious pts to maintain airway patency and to facilitate bag-mask ventilation; allows passage of other devices into trachea
– stimulates gag reflex, induces vomiting, abnormal facial or oropharyngeal anatomy, oral trauma, loose teeth, foreign bodies in the upper airway
Nasopharyngeal airway - when to use and when not to use
Airway patency required in unconscious/semiconscious pt; seizing pts when patent airway and adequate oxygenation needed in short term; better tolerated than a Guedel; trismus/maxillofacial surgery opt for these are mouth is not required
–head/facial trauma [basal skull fracture], trans-sphenoidal surgery; rhinoplasty/septoplasty; coagulopathy and anticoagulated patients due to severe epistaxis and haemorrhage
Name some common drugs used for anaesthesia
Premedication- benzodiazepines can be used [midazolam]
Induction- IV Propofol; inhalation isoflurane or sevoflurane
Maintenance- muscle relaxants [vecuronium; suxamethonium]; IV Propofol; inhalation isoflurane
Reversal- anticholinesterases [neostigmine]; atropine is given to prevent excess effect of acetylcholine
What are the three principles of anaesthesia?
[premedication - relieve anxiety, reduce discomfort, cause amnesia]
Induction
Maintenance
Reversal
Propofol - use
Induction and maintenance of anaesthesia
Propofol - side-effects
apnoea; arrhythmias; headache; hypotension; localised pain; nausea/vomiting
Propofol - moa
Positive modulation of the inhibitory function of GABA through GABA-A receptors
Increases affinity of GABA to GABA-A receptors
Isoflurane - side-effects
agitation; apnoea; arrhythmias; chills; cough; dizziness; headache; hypersalivation; hypertension; hypotension; nausea/vomiting; respiratory disorders
Isoflurane - moa
Decreases gap junction channel opening times; increases gap junction closing times
Activates calcium dependant ATPase
Binds to GABA receptor, glutamate and glycine receptors too
How are patient’s vital signs monitored during surgey?
ECG monitoring on at all times
O2 and CO2 monitored through the intubation
Pulse oximetry and heart rate are monitored transcutaneously
BP is measured with a cuff or through an arterial line [very accurate, measures BP every heart beat]
What are some common problems that occur with regards to the vital signs?
Can get hypo/hyperthermic
Can get low blood pressure due to medications or other things during the surgery
Can become tachy/brady
O2/CO2 can become too high or low if airway problems occur
How are changes to vitals managed?
++ temp: be wary of malignant hyperthermia; give dantrolene if MH is suspected; cold IV fluids and ice packs
— temp: warming blankets are provided; temperature measured every half an hour
O2CO2: anaesthetist will monitor and adjust amount of oxygen is administered through the insulation tube
++bp: medications to lower blood pressure can be given
—bp: medications lowering blood pressure can be dropped; fluids can be given if due to hypovolaemia; blood pressure is monitored regularly
++hr: fluids can be given if due to hypovolaemia
—hr: assess for the cause and treat appropriately
What is a post-operative assessment?
Assessment of patient after the surgery
Particularly important in patients developing or at risk of developing post-op complications
What is the EWS?
A score that determines the degree of illness of a patient using Resp rate; o2 sats; requirement for oxygen; temperature; blood pressure; heart rate; AVPU score
How to calculate EWS?
Respiratory rate
Oxygen saturation
Requirement of oxygen
Heart rate
Blood pressure
AVPU
Temperature
Name some common post-operative complications
Anaemia; atelectasis; infections; wound dehiscence; ileus; haemorrhage; DVT/PE; shock [hypovolaemia, sepsis, heart failure]; arrhythmias; ACS/CVA; AKI; urinary retention; delirium; N/V
What is the daily requirement of water?
25-30ml/kg/day
30 * 70 = 2100ml/day for average 70kg man
What is the daily requirement of sodiumm?
1mmol/kg/day
1 * 70 = 70mmol/day for average 70kg man
What is the daily requirement of potassium?
1mmol/kg/day
1 * 70 = 70mmol/day for average 70kg man
What is the daily requirement of glucose?
50-100g/day of glucose
to prevent ketosis, not to meet their nutritional needs
What is an appropriate daily fluid chart/prescription for an average 70kg man?
1L of 0.18% sodiuim chloride in 4% glucose with 27mmol/L potassium over 8hr
-twice
Consequences of hyponatraemia
Mild- anorexia, headache, nausea, vomiting, lethargy
Moderate- personality change, cramping and weakness of muscles, confusion, ataxia
Severe- seizures
Consequences of hypernatraemia
Polydipsia, polyuria, lethargy, weakness, confusion, irritability, myoclonic jerks, seizures, dry mouth, abnormal skin turgor, oliguria, tachycardia, orthostatic hypotension
Consequences of hypokalaemia
Mild- asymptomatic
More severe [<3.0mmol/L]- lethargy, generalised weakness and muscle pain, constipation
K <2.5mmol/L- severe muscle weakness and paralysis, respiratory failure, ileus, paraesthesia, tetany
Consequences of hyperkalaemia
Often nonspecific symptoms- weakness, fatigue, muscular paralysis or sob, palpitations or chest pain
Signs- occasional bradycardia due to heart block, or tachypnoea from respiratory muscle weakness; muscle weakness and flaccid paralysis; depressed or absent tendon reflexes
Consequences of hypovolaemia
Hypotension [systolic <100mmHg]; tachycardia; CRT >2s; cold peripheries; raised respiratory rate; dry mucous membranes; reduced skin turgor; reduced urine output; sunken eyes; reduced body weight from baseline; feeling thirsty
Consequences of hypervolaemia
Peripheral oedema; pulmonary oedema; raised JVP; increased body weight from baseline
Consequences of hypoglycaemia
Sweating, palpitations, shaking, feeling hungry - autonomic symptoms
Confusion, drowsiness, odd behaviour, speech difficulty, in coordination - neuroglycopenic symptoms
Headache, nausea - general symptoms
Consequences of hyperglycaemia
In diabetics- DKA risk; hyperosmolar hyperglycaemic state
How to manage nutrition balance in a patient?
Should be individualised
ABCDEF format
Anthropometry - aka body composition
Biochemical and haematological tests
Clinical examination
Dietary requirements
Environmental, behavioural and social factors
Functional
Use a MUST tool to assess for risk of malnutrition and be aware of refeeding
What is a MUST score?
It is a score assigned to a person based on their weight, illness, percentage weight loss
Helps to identify undernutrition and other forms of malnutrition
If a high risk, refer to dietitians for review and assistance
Types of enteral feed
Gastric feeding: food enters the stomach via NG tube or other forms of tube
Post-pyloric feeding: food is delivered after the stomach via ND/NJ tube or a jejunostomy tube
Types of parenteral feed
Administration of nutrients via the intravenous route
Why would you use enteral feeds?
Indicated when oral feeding is insufficient or unsafe
Commonly used in patients with the following: unconscious; neuromuscular swallowing disorders; physiological anorexia; upper GI obstruction; GI dysfunction or malabsorption; increased nutrient requirements; psychological problems
Why would you use parenteral feeds?
Considered when a patient is malnourished or at risk of unsafe or inadequate oral/enteral intake; nonfunctional GI tract
What is pain?
An unpleasant sensory and emotional experience, associated with, or resembling that associated with, actual of potential tissue damage
Always a personal experience that is influenced by many factors
How to manage pain?
Analgesia
Therapies
What is the WHO pain ladder?
Step wise approach to managing pain with analgesia
What are the steps of the pain ladder?
1) non-opioids (paracetamol/NSAIDs)
2) as necessary, mild opioids (codeine)
3) strong opioids (morphine or hydromorphone)
Different drugs used for pain management
Paracetamol
NSAIDs - ibuprofen, naproxen, diclofenac
Weak opioids - codeine, co-codamol
Strong opioids -morphine, hydromorphone
How to prevent venous thromboembolism
LMWH [enoxaparin]
DOACs [apixaban/rivaroxaban]
Intermittent pneumatic compression [inflated cuffs around the legs]
Anti-embolic compression stockings
Management of venous thromboembolism
Anticoagulation - apixaban or revaroxaban; started immediately
Long term anticoagulation- 3/12 if reversible cause
>3/12 if unclear cause
3-6/12 if active cancer, then review
S/S of thromboembolism
Unilateral symptoms
calf swelling/leg swelling
dilated superficial veins
tenderness to the calf
oedema
colour changes to the leg
Surgical patient on anticoagulants/anti-platelets - mx
Anticoags are stopped before major surgery; INR is monitored to ensure it returns to normal before surgery
Warfarin can be rapidly reversed with vitamin K
LMWH or unfractionated heparin infusion may be used to bridge the gap between stopping warfarin and surgery
DOACs are stopped 24-72hr before surgery, depending on half-life, procedure and kidney function
Surgical patient on oestrogen-containing contraception/HRT - mx
COCP or HRT needs to be stopped 4 weeks before surgery ot reduce risk of VTE
Surgical patient with Diabetes Mellitus - mx
Stress of surgery may lead to hyperglycaemia, however fasting may lead to the opposite - in general hypos are more dangerous than hypers
Some oral medications need to be omitted or altered around surgery:
*Sulfonylureas [gliclazide] cause hypos, stopped until pt is eating/drinking
*Metformin is associated with lactic acidosis
*SGLT2 inhibitors [dapagliflozin] can cause DKA in dehydrated/unwell patients
Insulin users continue on a lower dose of long-acting insulin [80%]
Short-acting insulin is stopped while fasting/not eating- until eating/drinking again
Variable rate insulin infusion alongside a glucose, sodium chloride, potassium infusion [sliding scale] to carefully control metabolites and glucose
Surgical patient with hypertension - mx
Patients should be continued as significant hypotension may result during anaesthesia
Surgical patient taking steroids - mx
Long-term steroids cause adrenal suppression, which prevents them from creating the extra steroids they require to deal with stress of surgery
*Additional IV hydrocortisone at induction and immediate post-op period [first 24hr]
*Doubling of normal dose once eating/drinking for 24-72hr depending on the operation
Use of antibiotics in theatre
Antibiotics can be given pre-op, intra-op, and post-op
All of these help to limit/minimise the risk of infection after surgery
How to manage nausea post-op.
Ondansetron [5HT-3 receptor antagonist]
Dexamethasone
Cyclizine [histamine 1 receptor antagonist]
Usually given as prophylaxis at the end of the operation
Ondansetron, prochlorperazine, cyclizine can also be given post-op if N/V occurs
How to manage infection post-op.
Identify the source of infection and treat appropriately
Urine dip and culture, swabs of wounds/ENT
FBC, U&Es, LFTs, cultures, CRP
CXR, CT
What are some common anaesthesia complications?
Accidental awareness; aspiration; dental injury [mostly when laryngoscope is used for intubation]; anaphylaxis; cardiovascular events [MI, stroke, arrhythmias]
What are some rarer, but important, anaesthesia complications?
Malignant hyperthermia and death
When to give blood intra-op?
Massive haemorrhage
Anaemia
How to transfuse blood in a surgical patient.
Through a large bore cannula [16G grey needle] in antecubital fossa
Sepsis- definition
Condition where the body launches a large immune response to an infection that causes systemic inflammation and organ dysfunction
Sepsis- s/s
hypoxia; oliguria; AKI; thrombocytopenia; coagulation dysfunction; hypotension; hyperlactaemia
temperature, hr, rr, o2 sats, bp, conscious level
Sepsis - ix
FBC, U&Es, LFTs, CRP, clotting, blood cultures, blood gas
urine dipstick, CXR, CT, lumbar puncture- identify source of infection
Sepsis - mx
BUFALO
Blood cultures/bloods
Urine output
Fluids
Antibiotics- broad spec abx
Lactate
Oxygen to maintain o2 sats 94-98
Sepsis - complications
Death
kidney failure
gangrene [tissue death]
permanent lung damage
permanent brain damage
Massive haemorrhage - definition
Definition of acute massive haemorrhage varies
It can be defined as a 50% blood loss within 3 hours or a rate >150ml/minute
Massive haemorrhage - s/s
Bleeding
Altered mental state
Hypotension
Weakness, fatigue
Massive haemorrhage - management
Initiate massive haemorrhage protocol
Call for help
Stop bleeding
Send blood samples- crossmatch; FBC; clotting screen; ABG
Give blood as soon as available through large bore peripheral cannula [16G grey cannula]
Post-operative shock - definition
Severe drop in blood pressure that causes dangerous reduction of blood flow trough the body/perfusion to organs
Post-operative shock - s/s
Low blood pressure
Altered mental state, including reduced alertness and awareness, confusion, and sleepiness
Cold, moist skin; hands and feet may be blue or pale
Weak or rapid pulse
Rapid breathing and hyperventilation
Decreased urine output
Post-operative shock - ix
Blood cultures
ABG
FBC, U&Es
Post-operative shock - mx
Abx
breathing support- ventilation
IV fluids/blood
Oxygen
Adrenaline
Abdominal mass or swelling - differentials
Cancer
IBD
Appendicitis
bowel obstruction
ascites
hepatomegaly/splenomegaly
urinary retention
6F’s:
fat; fluid; foetus; flatus; faeces; ‘filthy’ big tumour/’fatal’ growth
Abdominal mass or swelling - history questions
How long has it been there?
Pain?
Solid mass?
Better/worse?
Tried anything for it?
Always there?
Associated symptoms? fever, nausea, vomiting, flatulence,
DHx? SHx? FHx? PMHx?
Abdominal mass or swelling - examination
Abdominal examination
-DRE
-hernial orifices
-external genitalia if indicated [pregnancy]
Abdominal mass or swelling - investigations
Bed- DRE, beta hcg
Blood- FBC, U&Es, LFTs, CRP
Imaging- Ultrasound, CT abdo/pelvis w/contrast, colonoscopy[?], abdo XR, CXR
Abdominal mass or swelling - initial management
A-E if acutely unwell
pain- analgesia; IV paracetamol, codeine, NSAIDs
constipation/bowel obstruction- laxative
ascites- drain
Lump in the groin - differentials
Inguinal hernia, femoral hernia, aneurysm, sebaceous cyst, epididymitis, testicular torsion, lipoma, ectopic testicle, undescended testicle, lymphadenopathy
Lump in the groin - history
Pain? SQITARS
previous infection?
had anything similar before?
issues at puberty?
Lump in the groin - examination
Reducible?
tenderness?
abdominal examination; examine external genitalia
Lump in the groin - investigations
bloods- crp, fbc, u&es
imaging- CT abdo/pelvis with contrast
Lump in the groin - initial management
A-E if acutely unwell
pain- analgesia [iv paracetamol, codeine]
NBM
Abdominal pain - differentials
cholecystitis, gallstones, pud, gastritis, kidney stones, pyelonephritis, ruptured aaa, appendicitis, ischaemic colitis, pancreatitis, ectopic pregnancy, ovarian torsion, ovarian cyst, acute urinary retention, UTI, diverticulitis, gastroenteritis, ibd, ibs, peritonitis
-aka, a lot
Abdominal pain - history
SQITARS
DHx, SHx, FHx, PMHx
Abdominal pain - examination
abdominal examination, dre
external hernial orifices
external genitalia if required
cardio if indicated [could be MI presenting abnormally]
Abdominal pain - investigations
bed- ecg, beta hcg, urine dip/mc&s, bp, obs
bloods- fbc, u&e, lfts, crp, amylase, g&s, abg
imaging- CT abdo/pelvis with contrast, ultrasound abdomen, ERCP[if indicated], CXR [if indicated], AXR [if indicated]
Abdominal pain - initial management
A-E if acutely unwell; treat as you find
analgesia and fluids IV
abx IV if indicated
NBM
Change in bowel habit - differentials
Infection, IBD, IBS, stress/anxiety, thyroid problems, exercise/diet changes, anal fissure, cancers
Change in bowel habit - history
Describe the changes
How often? Consistency? Colour? Blood or mucus?
Any recent changes to diet or exercise or medications?
Any other symptoms? Nausea? Vomiting. Fever? Cough? Tenesmus? Eye/skin/joint problems?
Medication history
Past medical history
Family history
Social history
Change in bowel habit - red flags
Weight loss
Night sweats
Fever
Family history of cancer
IBD hx - risk of colon cancer in UC
Anaemia, malabsorption
Change in bowel habit - examination and investigations
Bed: DRE, stool sample for culture and microscopy, faecal cal protection, FIT test
Blood: FBC, U&E, LFT, TFT, CRP, bio markers (?)
Imaging: AXR, flex sig with colonoscopy at some point if indicated, CT abdo/pelvis with contrast (+thorax if cancer is suspected)
Change in bowel habit - initial treatment
ABCDE if acutely unwell
Monitor with obs if admitted
Reassurance
Escalate and refer for imaging appropriately
Change in stool colour - differentials
Medication side effect - particularly oral iron tablets
Blood- infection, cancer, haemorrhoids, anal fissure, diverticulitis, IBD
Change in stool colour - history
Similar to change in bowel habit hx
Change in stool colour - red flags
Similar to change in bowel habit
Change in stool colour - examination and investigations
Same as change in bowel habit
Change in stool colour - initial management
Reassure
Review medication
Arrange imaging and escalate
Admit if unwell
Jaundice - differentials
Pre-hepatic - haemolytic anaemia, malaria, Gilbert’s syndrome
Intra-hepatic - liver cancer, liver cirrhosis, hepatitis
Post-hepatic - gallstones, compression of the biliary tree, pancreatitis
Jaundice - history
When did it come on?
Travel hx
Social history - alcohol, smoking, sexual history is suspecting hep b maybe? IVDU
Hx of gallstones
PMHx, DHx
Jaundice - examination and investigations
Full abdominal examination
Bed:
Blood: FBC, U&E, LFT, blood film, blood cultures, split bilirubin (conjugated vs unconjugated)
Imaging: ultrasound, CT, MRCP
Jaundice - initial management
Anti-histamine for itch
Fluids
Pain relief if required
Admit for investigations
Discover the source and treat appropriately
Weight loss - differentials
Can be many different things
Cancers; IBD; stomas; medication side effect; diet and exercise change
Weight loss - history
How much and over how long?
Any other symptoms
Family history
Social history - any recent changes
Mental health history - eating disorder? Depression?
Weight loss - examination and investigations
Abdominal examination and DRE if indicated
Stool sample - faecal cal protection, FIT test
Blood: FBC, LFT, U&E, TFT, HIV serology
Imaging: CT thorax/abdo/pelvis is cancer if suggested, thyroid imaging, flex sig/colonoscopy if indicated
Weight loss - red flags
Unintentional weight loss
Blood in stool
Change in bowel habit
Anaemia
Abdominal mass
Weight loss - investigations
o
Weight loss - initial management
Reassure
Arrange imaging and other investigations
Supportive treatment in the mean time
Acute abdomen - initial assessment
A-E, stabilise and treat as you find
Refers to a recent, rapid onset of urgent abdominal or pelvic pathology
Common presentation; wide variety of causes
Acute abdomen - generalised abdominal pain causes
Peritonitis
Ruptured AAA
Intestinal obstruction
Ischaemic colitis
Acute abdomen - epigastric causes
Acute gastritis
Peptic ulcer disease
Pancreatitis
Ruptured AAA
Acute abdomen - RUQ causes
Biliary colic
Acute cholecystitis
Acute cholangitis
Acute abdomen - L lumbar causes
Renal colic [kidney stones]
Ruptured AAA
Pyelonephritis
Acute abdomen - Testicular pain causes
Testicular torsion
Epididymo-orchitis
Acute abdomen - umbilical causes
Ruptured AAA
Intestinal obstruction
Ischaemic colitis
Early stages of appendicitis
Acute abdomen - L iliac fossa causes
Diverticulitis
Ectopic pregnancy
Ruptured ovarian cyst
Ovarian torsion
Acute abdomen - Loin to groin pain causes
Renal colic [kidney stones]
Ruptured AAA
Pyelonephritis
Acute abdomen - supra-pubic/hypogastric causes
Lower UTI
Acute urinary retention
Pelvic inflammatory disease
Prostatitis
Acute abdomen - investigations
Bedside- ECG, urine dip, beta-hcg
Bloods- FBC, U&Es, LFTs, CRP, amylase, calcium, coag, ABG, lactate, G&S, blood cultures
Imaging- CXR, abdo XR, CT abdo/pelvis with contrast
Acute abdomen - initial management
A-E assessment
Alert senior of unwell pt
NBM [if surgery required or bowel obstruction]
NG tube [bowel obstruction]
IV fluids [resus and/or maintenance]
IV abx [infection]
Analgesia
Arrange investigations
VTE assessment
Prescribe regular medications
GI obstruction - s/s
Colicky abdominal pain
Abdominal distension
Vomiting
Obstipation - intractable constipation caused by prolonged retention of hard, dry feces
Fever, malaise, thirst, lethargy, may also be in septic shock
GI obstruction - differentials
Biliary colic - area of pain would be different
Ruptured AAA - intenser pain
Appendicitis
Urinary retention
MI abnormal presentation
Pancreatitis
GI obstruction - investigations
Blood: FBC, U&E, LFT, cultures (septic), amylase, ABG (acutely unwell), G&S
Imaging: plain film abdominal X-ray, CT
GI obstruction - typical history
SBO- previous surgical history, Crohn’s, malignancy
LBO - older patient, volvulus, malignancy, diverticula disease
GI obstruction - initial management
Drip and suck
Admit; NBM; IVF; NGT; oxygen; analgesia; obs; re-examine regularly
GI obstruction - definitive management
Exploratory laparotomy- decompress bowel, correct causing factor, resect non-viable bowel
GI haemorrhage - s/s
Hypovolaemic shock if very bad bleed
Pallor, anaemia, cold/clammy, anxious, hypoxic
GI haemorrhage - differentials
Ruptured AAA
Sepsis
Any other kinds of shock
GI haemorrhage - causes
Ruptured AAA
Anastomotic leak (?)
GI haemorrhage - investigations
Bed:
Blood: ABG, FBC, U&E, CRP, G&S, CM, coag/INR/clotting
Imaging: ultrasound, CT (not if unstable)
GI haemorrhage - initial management
ABCDE if deteriorating/acutely unwell/unstable
Two large bore cannula 16G
500mls of 0.9% NaCl in 15m
Activate massive haemorrhage protocol if patient severely unwell
Replace lost fluids like for like
GI haemorrhage - definitive management
Fix the cause - if ruptured AAA - urgent surgery for repair of the aorta
Acute pancreatitis - s/s
Epigastric pain - pain through to the back, relieved by sitting forward; though pain may be widespread in severe disease
Nausea + vomiting +/- fever
Altered mental status - altered consciousness
Acute pancreatitis - investigations
Abdominal exam
FBC, U&E, LFT, bone profile, random glucose, ABG, amylase/lipase, CRP, lipid profile
CXR erect - ?pneumoperitoneum
Ultrasound - ?gallstones; ?pseudocysts/abscess/necrosis
ERCP for gallstones
Acute pancreatitis - causes
Idiopathic
Gallstones
Ethanol
Trauma
Steroids
Mumps
Autoimmune
Scorpion sting
Hyperlipidaemia/hypercalcaemia/hypothermia
ERCP/emboli
Drugs
Acute pancreatitis - differentials
Gastritis
PUD
Acute cholecystitis
Peritonitis
Abnormal MI
Bowel obstruction
Acute pancreatitis - initial treatment
Fluid resuscitation
Analgesia
IVF
NBM
PPI
IV abx
Insulin sliding scale
Acute pancreatitis - definitive management
No definitive management; just supportive treatment mainly
Monitor for complications - pseudocyst, necrosis, coagulation disorders, abscess, haemorrhage secondary to pancreatic necrosis
Acute appendicitis - s/s
Generalised abdominal pain, later moves to the RIF
Nausea and vomiting
Anorexia
Tenderness and guarding on examination - McBurney’s point
Rovsing’s sign - palpation of LIF causes pain in RIF
Tachycardia, fever
Acute appendicitis - investigations
Bed: pregnancy test in women, urine dip
Blood: FBC, U&E, CRP, LFT
Faecal calprotectin (?IBD)
Imaging: ultrasound is often unhelpful/inconclusive, ultrasound for ectopic pregnancy
Acute appendicitis - differentials
RIF differentials
Caecal abscess
Ovarian pathology
Hernia
Ectopic pregnancy
Infection
IBD/IBS
Ischaemic mesentery
Acute appendicitis - initial treatment
Admit
NBM
IVF and analgesia and abx
Consent for surgery
Acute appendicitis - definitive management
Appendicectomy - if non-ruptured
If ruptured, treat collection/infection then take out
Name some common oesophageal disorders
Achalasia
Oesophageal Cancer
GORD
Barrett’s Oesophagus
Oesophagitis
Achalasia - s/s
Symptoms- dysphagia of solids and liquids; regurgitation of undigested food; vomiting; difficulty belching; weight loss; chest pain; aspiration; heartburn
Signs- clinical examination is typically normal, but may be evidence of weight loss and observed regurgitation/vomiting events after oral intake
Achalasia - investigations
OGD
Barium swallow
High-resolution manometry
Achalasia - management
Pneumatic dilatation
Peroral endoscopic myotomy (POEM)
Surgical myotomy
interventions aim to improve the lower oesophageal opening
Achalasia - complications
Significant chest pain, fatigue, malnutrition, weight loss
Aspiration pneumonia
Oesophageal cancer - s/s
Symptoms- constitutional symptoms [fever, anorexia, weight loss, lethargy]; dysphagia; weight loss; bleeding [haematemesis, melaena]; retrosternal pain; aspiration [cough, sob, fever], hoarseness [if extended to involve recurrent laryngeal nerve]
Signs- lymphadenopathy; cachexia; pallor; hepatomegaly [metastatic spread]
Oesophageal cancer - types
Squamous cell carcinoma - upper/middle oesophagus; >90% cases
Adenocarcinoma - lower oesophagus; due to chronic reflux and development of columnar metaplasia [precursor lesion known as Barrett’s oesophagus]
Oesophageal cancer - investigations
Diagnosed using upper GI endoscopy and biopsies of suspected lesions
Bloods- FBC, U&Es, LFTs, Bone profile, Clotting screen, Renal function, serum iron, transferrin sats, total iron binding capacity
Imaging- CT chest/abdomen/pelvis; abdominal ultrasound; PET-CT
Special- Gastroscopy; endoscopic ultrasound, diagnostic laparoscopy
Squamous Cell Carcinoma of Oesophagus - risk factors
Smoking; alcohol consumption; previous partial gastrectomy; atrophic gastritis; HPV
Adenocarcinoma of Oesophagus - risk factors
Majority arise from Barrett’s oesophagus
Chronic reflux; Barrett’s oesophagus; smoking; obesity; Zollinger-Ellison syndrome
Oesophageal cancer - management
Options include: surgery, endoscopic techniques, radio/chemotherapy, palliative car, best supportive care
Choice of treatment depends on whether cancer is limited, locally advanced or advanced/metastatic
Oesophageal cancer - complications
Prognosis is poor
5y survival rate is 16%
Depends on stage of cancer
Oesophagectomy is a major operation with significant morbidity and mortality
GORD - s/s
Heartburn; regurgitation; dyspepsia; chest pain; dysphagia; odynophagia; cough; hoarse voice; nausea/vomiting
GORD - investigations
Gastroscopy and pH monitoring
GORD - management
Lifestyle- weight loss, stop smoking, dietary modifications
Medical- PPIs
Surgical- Nissen fundoplication
Barrett’s Oesophagus - s/s
Heartburn, regurgitation, chest discomfort, dyspepsia, nausea/vomiting, dysphagia
Barrett’s Oesophagus - investigations
Diagnosed on endoscopy with biopsies
If evidence of metaplastic columnar epithelium >=1cm above the gastro-oesophageal junction; biopsies should be taken to confirm diagnosis of BO