Surgery Flashcards
LGIB >40 most common cause
Diverticulosis
Upper go bleeding surgical indications
6 or more units of blood in first 24hrs Re bleed with maximal therapy Esophageal varicies despite measures-> TIPS Perforation Gastric outlet obstruction
Sbo cause
Adults adhesions Kids hernia
Progressive dysphagia dx step
carcinoma: barium swallow, endocsopy is diagnostic but you have to do barium first to prevent perf
Complication of ileum resection
hyperoxaluria=>nephrolithiasis
Hypomagnesium cause and manifestation
malnourshed or large GI loses Similar to hypocalcium: parasthesia, hyperreflexia, tetany ECG differentiates between hypomag vs hypocalc long QT Pr, st depression, inverted p, torsades
PVD preop testing
pharm stress test, stress test adequate for CAD but he cant exercise b/c PVD
HIT manifestation and tx
POD 5 platelets down 50% or <100,000 Stop heparin, start direct thrombin inhibitor(lepirudin, argatroban) convert to warfarin if needed
Low cardiac output state=>sudden epigastric pain
Acute mesenteric Ischemia peritoneal signs=> lap w/o peritoneal signs=> angiography
factors preventing Fistula closure
FRIENDS foreign body Radiation Inflammation Epithelialization of the tract Neoplasm Distal obstruction Steroids
Severe Hemophilia A surgery control
DDAVP + AMICAR(e-aminocarproic acid) inhibitor of fibrinolysis can also use cryoprecipitate or VIII concentrate
stress fraction for calculating cal needs
starvation .9 post op 1.1 organ failure 1.5 >50% body burns 2.0x
Goldman’s risk assessment
S3 gallop or JVD 11
MI within 6 months 10
>5PVC’s/min 7
Non sinus rhythm or SR with APC’s on ECG 7
Age > 70 5
>25 class IV 22% risk
13-25 class III 11% risk
Cardiac pre-op assessment
<35 no cardiac hx = ECG cardiac hx or old = ECG + stress or ECHO
Antibiotic proph
Cefazolin
Colorectal/Appendectomy: Cefoxitin or Cefotetan
Urologic: Cipro
ENT: Cefazolin or clinda and gent
Most common cause of fever within 24 hours
Atelectasis macrophage mediated, reduced by early ambulation, spiro tx
Wells’ PE Criteria
signs and symptoms 3 alternative dx less likely 3 tachy>100 1.5 Immobilization or surgery in the previous four weeks 1.5 Previous DVT or PE 1.5 Hemoptysis 1.0 Malignancy 1.0 >6 66.7% 2-6 20.5%
SSI bacteria
abdomen: G- or anaerobes ENT: Strept All others: Staph
Post op fever
Wind (Atelectasis) Water (UTI) Wound Walking (PE) Wonder Drugs
Shift curve to right(O2 unloading)
Acidosis(hypovent->PCO2 up), hypertherm, DPG(chronic hypoxia)
shift curve to left(decrease unloading)
Alk, hypotherm, low DPG(banked blood)
Hypo Shock Stages
I - <15% 750
II - 15-30% 750-1500 - tachy(1st(, tachypnea, tilt, oliguria,
III - 30-40% (1500-2000) - hypotension
IV - 40% bad
Neurogenic Shock tx
loss of sympathetic tone and loss of reflexive tachy
Fluid resusitation followed by dobutamine or phenylephrine
Fam hx of prolonged prolonged anesth paralysis
pseudocholinesterase deficiency
avodi succinylcholine and mivacurium
Post op resp acid, hypoxemia, hypercarbia
hypercarb is diagnostic of alveolar hypoventilation
diaphramatic rupture dx
air fluid level in left lower chest with NG tube in it
Hormone elevated after trauma
Insulin but net effect is hyperglycemia due to increased insulin resistance peripherally
Knee dislocation concern and workup
popliteal artery injury due to extreme force required
Ankle Brachial index
If <.9 do an angiogram
Bladder injury management
Extraperitoneal: Catheter Drainage with repeat imaging
fix if doing surgery for something else
Intraperitoneal: surgery
Splenic trauma reasons for surgery
Peritoneal signs
Hemo unstable
Degree of spenic damage doesnt matter
Positive DPL
>10cc blood
>100,000 RBC/ul
>500 WBC/ul
elevated amylase
bilirubin
alk phos
kid resusitation
20cc/kg bolus
repeat if no response
transfuse
hemothorax thoracotomy indication
1500 cc initial
200cc/hr for 4 hrs
Thoracic vessel injury
Esophogeal injury
Decompensation after initial stabilization
Acute hyperparathyroidism managment
vigorous IV hyrdration
then lasix
then resection of adenomas
Pheo preop managment
a-block phenoxybenzamine 1-3 weeks before surgery
breast cancer pregnant
surgery without sentinal lymph node due to radiation
thryoid storm prevention and tx
preop lugol iodine solution 10 days before or PTU or Methamizole
fluid, antithyroid drugs, bb’s, iodine solution and steroids
hyperparathyroid xray finding
osteitis fibrosa cystica
ITP tx
steroids <30000
splenectomy if ineffective
surgical tx of upper gi bleed
6 units of blood in 24 hrs
esophageal bleeding despite medical man: do TIPS
Perforation
Gastic outlet obstruction
CRC staging
Stage 0 Tis N0 M0 mucosa; cancer-in-situ
Stage I T1-2 N0 M0 T1:invades submucosa or invades muscularis propria
Stage II-A T3 N0 M0 T3: Tumor invades subserosa or beyond (without other organs involved)
Stage II-B T4 N0 M0 T4: Tumor invades adjacent organs or perforates the visceral peritoneum
Stage III-A T1-2 N1 M0 N1: Metastasis to 1 to 3 regional lymph nodes. T1 or T2.
Stage III-B T3-4 N1 M0 N1: Metastasis to 1 to 3 regional lymph nodes. T3 or T4.
Stage III-C any T, N2 M0 N2: Metastasis to 4 or more regional lymph nodes. Any T.
Stage IV any T, any N, M1 M1: Distant metastases present. Any T, any N.
Cholangitis man
IV antibiotics and fluids, fail? => ERCP, fail? => T tube
Chronic Pancreatitis dx
ERCP is most accurate
insulinoma tx
resection
epidermoid cancer of anus tx
chemoradiation
volvulus tx
Sigmoid: reduced with enema or scope then eventually surgery
Cecal: Surgery
acute pancreatitis after tx complication and tx
pseudocyst
If stays for >6 weeks Drain if >6cm
carcinoid found on appendectomy tx
Right Hemicolectomy if >1-2cm or involve the base
liver
hemangioma
adenoma tx
hemangioma: resect if symptomatic
adenoma: stop OCP’s if it doesnt go away take it out
normal common bile duct size
3mm
1.0cm is big
succinylcholine sfx
kidney stones needing a procedure
>5mm
glascow coma scale
4 eyes, jackson 5, 6 cylinder motor, 7 intubate
Eye Opening (E)
4 = spontaneous 3 = to voice 2 = to pain 1 = none
Verbal Response (V)
5 = normal conversation 4 = disoriented conversation 3 = inappropriate words 2 = no words, only sounds 1 = none
Motor Response (M)
6 = normal 5 = localized to pain 4 = withdraws to pain 3 = decorticate posture 2 = decerebrate 1 = none
mailig hypertherm tx
stop anesthesia, 100% o2 hypervent, dantroline, alkanalyse urine
eosinophilia following angiography
cholesterol embolysm
VTE tx
heparin->coumadin
filter for recurrence with tx
thrombolytic if unstable(massive PE)
resusitation goals
intubate if hypoxic
fluid resus to CVP 8-12
vasopressors to 65 MAP norepi, dopamine
NO sfx
distended loops of bowel
Pancuronium sfx
neuromuscular blocker: tachycardia
Melanoma tx
<1mm thick 1cm margin
1-4mm thick 2cm margin + sentinal node biopsy
burn formula
4ml LR/kg in 24 hrs
1/2 first 8 hours
1/2 next 16 hours
ischemic colitis man
expectant unless full thckness nec, perf, bleeding
hepatic adenoma vs focal nodular hyperplasia
remove hepatic adenomas >4cm due to risk of rupture and malig transformation
FNH no treatment neccessary
Adenoma “cold” on Nuc Med, FNH “hot”