Surgery Flashcards
Peptic ulcer disease:
-Which is most common ulcers?
-Describe the pain felt in duodenal ulcer vs gastric ulcer
-What other features may be seen?
Duodenal ulcers: more common than gastric ulcers, epigastric pain relieved by eating
Gastric ulcers: epigastric pain worsened by eating
Features of upper gastrointestinal haemorrhage may be seen (haematemesis, melena etc)
Appendicitis
-Describe the pain
-Give 3 other features
-What is the clinical sign suggestive of appendicitis?
Pain initial in the central abdomen before localising to the right iliac fossa
Anorexia is common
Tachycardia, low-grade pyrexia, tenderness in RIF
Rovsing’s sign: more pain in RIF than LIF when palpating LIF
Is acute appendicitis common? Who does this most commonly affect? what is the pathogenesis?
Acute appendicitis is the most common acute abdominal condition requiring surgery. It can occur at any age but is most common in young people aged 10-20 years.
Pathogenesis
lymphoid hyperplasia or a faecolith → obstruction of appendiceal lumen → gut organisms invading the appendix wall → oedema, ischaemia +/- perforation
Features of appendicitis:
-Describe the pain?
-Is there vomiting or diarrhoea?
-Is the pyrexia?
-Will the patient be hungry
Abdominal pain is seen in the vast majority of patients:
peri-umbilical abdominal pain (visceral stretching of appendix lumen and appendix is midgut structure) radiating to the right iliac fossa (RIF) due to localised parietal peritoneal inflammation.
the migration of the pain from the centre to the RIF has been shown to be one of the strongest indicators of appendicitis
patients often report the pain being worse on coughing or going over speed bumps. Children typically can’t hop on the right leg due to the pain.
Other features:
-vomit once or twice but marked and persistent vomiting is unusual
diarrhoea is rare. However, pelvic appendicitis may cause localised rectal irritation of some loose stools. A pelvic abscess may also cause diarrhoea
-mild pyrexia is common - temperature is usually 37.5-38oC. Higher temperatures are more typical of conditions like mesenteric adenitis
-anorexia is very common. It is very unusual for patients with appendicitis to be hungry
-around 50% of patients have the typical symptoms of anorexia, peri-umbilical pain and nausea followed by more localised right lower quadrant pain
Give 4 examination findings of acute appendicitis? what are 2 classical signs
Examination
-generalised peritonitis if perforation has occurred or localised peritonism
-rebound and percussion tenderness, guarding and rigidity
-retrocaecal appendicitis may have relatively few signs
-digital rectal examination may reveal boggy sensation if pelvic abscess is present, or even right-sided tenderness with a pelvic appendix
classical signs
-Rovsing’s sign (palpation in the LIF causes pain in the RIF) is now thought to be of limited value
-psoas sign: pain on extending hip if retrocaecal appendix
Diagnosis of appendicitis
-What is seen on bloods?
-What is seen on urinalysis?
-What imaging can be used?
Diagnosis
-typically raised inflammatory markers coupled with compatible history and examination findings should be enough to justify appendicectomy
-a neutrophil-predominant leucocytosis is seen in 80-90%
-urine analysis: useful to exclude pregnancy in women, renal colic and urinary tract infection. In patients with appendicitis, urinalysis may show mild leucocytosis but no nitrites
-there are no definite rules on the use of imaging and its use is often determined by the patient’s gender, age, body habitus and the likelihood of appendicitis
-thin, male patients with a high likelihood of appendicitis may be diagnosed clinically
-ultrasound is useful in females where pelvic organ pathology is suspected. Although it is not always possible to visualise the appendix on ultrasound, the presence of free fluid (always pathological in males) should raise suspicion
-CT scans are widely used in patients with suspected appendicitis in the US but this practice has not currently reached the UK, due to the concerns regarding excessive ionising radiation and resource limitations
Describe the management of appendicitis
Management
-appendicectomy
can be performed via either an open or laparoscopic approach
-laparoscopic appendicectomy is now the treatment of choice
-administration of prophylactic intravenous antibiotics reduces wound infection rates
-patients with perforated appendicitis (typical around 15-20%) require copious abdominal lavage.
-patients without peritonitis who have an appendix mass should receive broad-spectrum antibiotics and consideration given to performing an interval appendicectomy
-be wary in the older patients who may have either an underlying caecal malignancy or perforated sigmoid diverticular disease.
-trials have looked at the use of intravenous antibiotics alone in the treatment of appendicitis. The evidence currently suggests that whilst this is successful in the majority of patients, it is associated with a longer hospital stay and up to 20% of patients go on to have an appendicectomy within 12 months.
Acute pancreatitis
-what is this usually due to
-What 2 symptoms does this cause
-What may be seen on examination?
Usually due to alcohol or gallstones
Severe epigastric pain
Vomiting is common
Examination may reveal tenderness, ileus and low-grade fever
Periumbilical discolouration (Cullen’s sign) and flank discolouration (Grey-Turner’s sign) is described but rare
Give 10 causes of pancreatitis?
Popular mnemonic is GET SMASHED
Gallstones Ethanol Trauma Steroids Mumps (other viruses include Coxsackie B) Autoimmune (e.g. polyarteritis nodosa), Ascaris infection Scorpion venom Hypertriglyceridaemia, Hyperchylomicronaemia, Hypercalcaemia, Hypothermia ERCP Drugs (azathioprine, mesalazine*, didanosine, bendroflumethiazide, furosemide, pentamidine, steroids, sodium valproate)
Give 3 clinical features of biliary colic?
-Pain in the RUQ radiating to the back and interscapular region, may be following a fatty meal. Slight misnomer as the pain may persist for hours
-Obstructive jaundice may cause pale stools and dark urine
-It is sometimes taught that patients are female, forties, fat and fair although this is obviously a generalisation
Acute cholecystitis - give 4 clinical features?
History of gallstones symptoms (see above)
Continuous RUQ pain
Fever, raised inflammatory markers and white cells
Murphy’s sign positive (arrest of inspiration on palpation of the RUQ)
What is ascending cholangitis?
Ascending cholangitis is a bacterial infection (typically E. coli) of the biliary tree. The most common predisposing factor is gallstones.
What is charcots triad of ascending cholangitis? What is seen on bloods?
Charcot’s triad of right upper quadrant (RUQ) pain, fever and jaundice occurs in about 20-50% of patients
fever is the most common feature, seen in 90% of patients RUQ pain 70% jaundice 60% hypotension and confusion are also common (the additional 2 factors in addition to the 3 above make Reynolds' pentad)
Other features
raised inflammatory markers
What is the imaging modality used first line for ascending cholangitis?
Investigation
ultrasound is generally used first-line in suspected cases to look for bile duct dilation and bile duct stones
What is the management of ascending cholangitis?
Management
intravenous antibiotics endoscopic retrograde cholangiopancreatography (ERCP) after 24-48 hours to relieve any obstruction
Diverticulitis:
-describe the nature and the site of pain
-What is seen on blood tests? Is there a pyrexia
Colicky pain typically in the LLQ
Fever, raised inflammatory markers and white
Describe the pain felt in abdominal aortic aneurysm? what may the presentation of this look like? what may be in the past medical history?
Severe central abdominal pain radiating to the back
Presentation may be catastrophic (e.g. Sudden collapse) or sub-acute (persistent severe central abdominal pain with developing shock)
Patients may have a history of cardiovascular disease
What is an AAA? what is the normal diameter of the infrarenal aorta in females vs males? what is considered aneurysmal? what is the pathophysiology of AAA?
Abdominal aortic aneurysms occur primarily as a result of the failure of elastic proteins within the extracellular matrix. Aneurysms typically represent dilation of all layers of the arterial wall. Most aneurysms are caused by degenerative disease. After the age of 50 years the normal diameter of the infrarenal aorta is 1.5cm in females and 1.7cm in males. Diameters of 3cm and greater, are considered aneurysmal. The pathophysiology involved in the development of aneurysms is complex and the primary event is loss of the intima with loss of elastic fibres from the media. This process is associated with, and potentiated by, increased proteolytic activity and lymphocytic infiltration.
Give 5 causes of AAA
Major risk factors for the development of aneurysms include smoking and hypertension. Rare but important causes include syphilis and connective tissues diseases such as Ehlers Danlos type 1 and Marfan’s syndrome.
Give the interpetation and action for each aorta width:
<3cm
3-4.4cm
4.5-5.4cm
=>5.5
Aorta width Interpretation Action
< 3 cm Normal No further action
3 - 4.4 cm Small aneurysm Rescan every 12 months
4.5 - 5.4 cm Medium aneurysm Rescan every 3 months
≥ 5.5cm Large aneurysm Refer within 2 weeks to vascular surgery for probable intervention
Only found in 1 per 1,000 screened patients
When should an AAA be referred urgently within 2 weeks to vascular surgery?
high rupture risk
symptomatic, aortic diameter >=5.5cm or rapidly enlarging (>1cm/year) refer within 2 weeks to vascular surgery for probable intervention treat with elective endovascular repair (EVAR) or open repair if unsuitable. In EVAR a stent is placed into the abdominal aorta via the femoral artery to prevent blood from collecting in the aneurysm. A complication of EVAR is an endo-leak, where the stent fails to exclude blood from the aneurysm, and usually presents without symptoms on routine follow-up.
Intestinal obstruction:
-what may be in the past medical history
-What 2 symptoms will be complained of?
-What will be found oe
History of malignancy/previous operations
Vomiting
Not opened bowels recently
‘Tinkling’ bowel sounds
What 2 factors point towards pregnancy in abdo swelling?
Young female
Amenorrhoea
Give 2 risk factors which would point towards ascites as a cause of abdo swelling?
History of alcohol excess, cardiac failure