Surg Flashcards
Start a vascular exam by asking…
any pain or tenderness in abdomen or legs
Importance of atrial fibrillation for lower limb vascular exam?
emboli causing PVD
Inspection for vascular exam…
Scars (graft in thigh), chronic venous insufficiency (legs), ulcers (feet, heels, ankles, toes),
where does femoral artery become politeal?
opening of adductor magnus, the adductor hiatus
palpate the femoral artery at…
midpoint of inguinal ligament between ASIS, pubic symphysis
bruit in abdomen means stenosis of what…
abdo aorta, renal or mesenteric arteries
where is popliteal anatomically?
in between heads of gastrocnemius
borders of hesselbachs triangle and what hernias go through here
medial: lat wall of rectus abdominus
inferior: inguinal ligament
laterally: inferior epigastric vessels
direct hernias
where do indirect hernias pass through
deep inguinal ring… lateral to epigastric vessels
deep inguinal ring/tunica vaginalis is originally derived from…
peritoneum
4 Causes of peritonitis…
Blood, bowel contents, pus, inflammed or perforated organ/viscus
Features of peritonitis
constant pain, worse with cough, movement, breathing
fever, tachy, tachypnoeic, abdo rigidness, absent bowel sounds
lying still!!!
Ix for peritonitis
FBC, UEC, LFT (clotting, group and hold), blood culture, urinalysis, CRP, Pregnancy test, Erect CXR, abdo XR
Low abdo pain Ddx by anatomy
appendicitis, ovary/uterus, bowel (caecum, ascending on left, decending, rectum on right), small bowel, ureters, hernias
What is meckels diverticulum?
congenital diverticulum near ileocaecal valve
What complications can meckels and therefore all diverticular have?
Infection, Rupture (haemorrhage, faecal peritonitis), obstruction
List some gynae causes of abdo pain
PID, ovarian cyst/torsion, ectopic pregnancy
Similair appendicitis Ddx
Perforated ulcer, ruptured AAA, Crohns, mesenteric adenitis
Diverticular disease is only symptomatic in what percentage…
10-30%
Perforation of diverticuli can cause 2 things…
faecal peritonitis or walled off as abscess
Another complication of diverticular disease is
stricture
Ddx epigastric pain by anatomy
AAA, biliary, pancreatitis, PUD, epigastric hernia
Air under diaphragm on CXR=
perforated viscus (but not seen in 30% of perforated ulcers- do CT to rule out)
4 cardinal features of intestinal obstruction
colicky pain, vomiting, absolute constipation, distension (CCVD)
3 main causes of small bowel obstruction
ADHESIONS!, hernia, caecal cancer
others= crohns, worms, gallstone
abdo X-ray signs of small vs large bowel obstruction
SBO= central loops with valvulae conniventes runnign across whole lumen of bowel LBO= loops in periphery, haustra don't cross whole lumen
progression of colicky pain to continuous + fever and tachycardia in SBO=
treatment=
ischaemia =/- perforation—> peritonitis
urgent laparotomy
3 main Causes LBO
Cancer, Diverticular stricture, volvulus
Sigmoid volvulus on abdo XR looks like
sausage, no air in rectum
Suspect pseudo-obstruction when…
Next step to Dx
still air in rectum even though loops of bowel are dilated
Gastrograffin NOT barium enema
Apple core is characteristic of what Dx…
Obstructing colonic cancer
What to suspect if patient has AF and has severe abdo pain without distension
Ischaemic bowel due to emboli from AF
Sx of mild ischaemic bowel
diarrhoea, mild abdo pain
Rx for mild vs serious (sudden onset, pyrexia, unwell)
Mild: IVI, analgesia, antibiotics, close obs
Severe- rescuscitate, IVI, O2, Abx, laparotomy and resection of non-viable bowel
What should always be examined in male with lower abdo pain?
Testes!!
How does testicular torsion present
lower abdo pain +/- vomiting (not necessarily testicular pain)
What Dx to not miss in older patients with loin to groin pain who have never had before?
Leaking AAA- retroperitoneal haematoma can irritate
Pseudomembraneous colitis caused by which bug…
C.diff
Do UTIs cause abdo pain generally?
NO!
Top 3 causes of LBO
Malignancy 60%, Diverticuli 20%, Volvulus 5%
What type of patients do pseudoobstruction occur in?
Severly ill, elderly
Early and late symptoms for LBO
Early: change in bowel habit, distension, los of appetite
Late: absolute constipation, vomiting, colicky pain
Physical signs of LBO
Febrile, tachy, ill, hypotensive, distended, tender abdo, absent or obstructed bowel sounds
Ix for LBO
FBC, UEC, LFT, clotting, group and hold
Abdo XR, erect CXR to exclude free gas, gastrograffin,
Important investigation for malignancy in LBO
CT, endoscopy to take biopsy
Mx for LBO
Resuscitate: IVI, urinary catheter Analgesia Decompress: NG tube Establish diagnosis Definitive surgery, temp stoma, stent
Describe hartmanns procedure
Recto-sigmoid resection with closure of rectal stump and formation of end colostomy
When use a colonic stent?
Temporising or palliative procedure
Mx of volvulus
stiff rectal tube passed with sigmoidoscope through twist–>imediate relief. surgery if ischaemic
Mx pseudoobstruction
NBM, IVI, NG tube
Correct biochem abnormality, treat infection
Consider colonic stimulants eg erythro, metoclopramide
If conservative fails go surgical
peroneal artery is a branch of which artery?
posterior tibial
5 patterns of arterial disease
stenosis, thrombosis, emoblus, aneurysm, dissection (STEAD)
Stenosis of aorta-illiac segment usually cause loss of which pulse
femoral, but foot pulses may still be detected
Most common artery to cause claudication
SFA
SFA obstruction makes which pulses reduced
politeal, foot (femoral above it intact)
More “distal” arterial disease usually occurs for what patients?
diabetes, very elderly (80+)
most diseases are proximal
Prevalence of PAD
For men: 10% at 65, 25% at 75… half this for women
Main risk factors for PAD
Smoking, Diabetes, hypertension, lipids
Ddx of leg pain on walking
OA, Caludication, Spinal stenosis, peripheral neuropathy
What symptom indicates severe ischaemia?
rest pain
IX for lower limb PVD
FBC, UEC, BSL, lipids.
ABI, duplex, angio if severe
ABI normal values
.95-1.1
ABI rest pain value, critical ischaemia value
.3-.6
<.3
What condition is ABI unreliable for and why?
Diabetes, arteries uncompressible
When to treat PAD?
Depends on symptom severity
Mx of PAD for symptom control
Smoking cessation, exercise, statin (although meds generally ineffective)
Mx PAD to prevent systemic complication
Smoking, weight loss, BP control, lipid control
Aspirin, ACE