General Surgery Flashcards
Most common type kidney stone
calcium oxalate
ass. w/ hypercalcaemia
Kidney stones ass. w/ inherited metabolic condition
cystine
uric acid stones
associated with chemo
calcium phosphate stones
associated with renal tubular acidosis (type 1 and 3)
which stones associated with infection & staghorn calculus
struvite
which stones not radiopaque
uric acid
kidney stone diagnostic investigation
non-contrast CT KUB
prophylactic drug for calcium oxalate stones
thiazide diuretics
prophylactic drugs for uric acid stones
Allopurinol
potassium citrate
kidney stone management
watchful waiting, pain relief if <5mm
Percutaneous nephrolithotomy if >2cm
Shock wave lithotropsy
Ureteroscopy if pregnant/ureteric stones
MOA lidocaine
blockage sodium channels
inguinal hernia vs femoral hernia
inguinal: superior and medial to the pubic tubercle
femoral: inferior and lateral to pubic tubercle
Inguinal hernia management
treat medically fit patients even if they are asymptomatic
mesh surgery
Direct vs indirect inguinal hernia
direct - bulges through wall of inguinal canal
indirect - goes through inguinal canal
to differentiate: press on deep inguinal ring, patient coughs and indirect won’t come back through
BPH treatment
1st line: alpha-1 antagonist = tamsulosin, alfuzosin
2nd line: 5 alpha-reductase i = finasteride (stops testosterone making)
3rd line: anticholinergics (oxybutnin, tolterodine)
S/E alpha 1 antagonist
dizzy
postural hypotension
dry mouth
depression