Gen Surg Flashcards
numer one limiting factor prior to surgery is….
hx of cardiovascular disease
history of CV disease predisposing to surgery complications
- EF
if had a recent MI and surgery
must defer surgery for 6 months and stress the patient at that interval
patient has CHF and needs surgery for something else
give the drugs that decrease mortality:
ACE inhibitors, beta blockers, spironolactone
cardiovascular risk factor if male
male older than 45yo
patient with CV risk factors– what needs to be done before surgery
- bp meds adjusted
- daily finger sticks monitored
- insulin regimen adjusted
- stress test with ECG
(possibly ECHO if murmur)
preop assessment if under 35yo and no hx of cardiac disease
EKG ONLY
preop assessment if hx of cardiac disease and ANY AGE
- EKG
- stress testing– evaluate for ischemic coronary lesions
- ECHO for structural disease, and for ejection fraction
preop assessment PFT’s necessary for…
known lung disease
smoking history
preop patient is a smoker– what suggestions
quit smoking for 6-8weeks before surgery and use nicotine patch in meantime
preop assessment patient with renal disease
- give fluids before and during surgery
- if patient is on dialysis, dialyze pt 24hrs before surgery
ABC’s: airway
- no facial trauma= orotracheal tubes
- facial trauma= cricothyroidotomy
- C-spine injury= orotracheal tube with flexible bronchoscopy
ABC’s: breathing
O2 sats above 90%= ideal
ABC’s: circulation
insert 2 large bore IV cannulas and being aggressive fluid resuscitation to prevent hypovolaemic shock
cool skin, shock
cardiogenic or hypovolaemic shock
cardiogenic vs. hypovolaemic shock
PCWP/LVEDP:
cardio: increased
hypo: decreased
warm skin, shock
neurogenic, anaphylactic, septic
CO change in neurogenic shock
decreased CO
CO change in anaphylactic and septic shock
increased CO
PCWP change anaphylactic vs. septic shock
anaphylactic: decreased
septic: no change
sepsis definition
2/4 and infection source
SIRS criteria
2/4
- bp: less than 36, greater than 38
- HR: greater than 90bpm
- resp: tachypnea>20breaths/min, or O2 sats
severe sepsis
2/4 + infection source + organ dysfunction
septic shock definition
2/4 + infection source + organ dysfunction + HYPOtn
example of “infection source”
CXR: shows infiltrates= pneumonia
car accident and abdomen hurts, and end up with large ecchymosis on right flank, most likely diagnosis
HAEMORRHAGIC PANCREATITIS
complication 6-8 weeks after pancreatitis
pancreatic pseudocyst
differential for cullen sign
haemorrhagic pancreatitis
ruptured aortic aneurysm
grey turner sign
flank bruising–> RETROperitoneal haemorrhage
kehr sign
pain in L shoulder—> splenic rupture
balance sign
dull percussion of the L and shifting dullness on the R–> splenic rupture
seatbelt sign
bruising where the seatbelt was–> deceleration injury
free air under the diaphragm
perforation of the bowel, best initial test= UPRIGHT CXR
imaging of choice paralytic ileus
abdominal xray
abdominal trauma– imaging to be done
- US– ASAP
2. CT– check for retroperitoneal bleed (even if the US was normal)
blunting of costophrenic angle on chest XR and CT
hemothorax
urethral meatus injury and high riding prostate, what next…
- KUB followed by….
- RETROGRADE URETHROGRAM
- then….. foley catheter (don’t do this immediately because it can lead to further urethral damage; just placed to aid in urination)
MOST ACCURATE TEST–suffering from ischaemic bowel (severe pain out of proportion to physical findings)
ANGIOGRAPHY or surgery
severe abdo pain 10/10 no guarding, soft abdomen and no rebound tenderness
PAIN OUT OF PROPORTION= MESENTERIC ISCHAEMIA
best initial test ischemic bowel
CT of the abdomen
tx mesenteric ischaemia
IV normal saline, followed by surgical removal necrotic bowel
types of abdominal pain that DO NOT require surgery
MI
GERD
Lower lobe pneumonia
acute porphyrias
2 mc sites of mesenteric ischaemia
splenic and hepatic flexures
number one risk factor for mesenteric ischemia
A FIB— shoots off an emboli
best initial test ischaemic bowel vs. mesenteric ischaemia
ischaemic bowel= CT abdo
mesenteric isch= abdo XR: air in bowel wall
pain in tip of penis or perineum
referred pain from prostate
pain in the ears
referred pain from pharynx
crunching upon palpation of the thorax due to subcutaneous emphysema
HAMMAN’S sign– form boerhaave/ eso perforation
most common cause of esophageal perforation
IATROGENIC– endoscopy
mortality with boerhaave syndrome, even with surgery
25%
most accurate test in diagnosis of eso rupture
ESOPHOGRAM: using diatrizoate meglumine and diatrizoate sodium solution (GASTROGRAFFIN), which shows leakage of contrast outside the esophagus
barium used in esophagram for eso rupture?
NOOOOO– because it damages the tissues
tx of boerhaave
surgery
complication with high mortality rate in boerhaave surgery
MEDIASTINITIS
don’t forget that gastric perforation can cause….
PANCREATITIS, recall ulcers erode–> release gastric acid–> activate enzymes
pain from gastric perforation
right shoulder pain
most accurate test for gastric perforation
abdo CT
best initial test for gastric perforation
erect CXR
tx for gastric perforation HYHYHYHYHYHHYHY
- NPO
- NG tube
- Medical mgmt
- Surgical mgmt
medical mgmt of gastric perforation
- broad spectrum antibiotics– combat infection
2. IV fluids in prep for surgery
surgical mgmt of gastric perforation
exploratory laporotomy and repair of the perforation
acute diverticulitis first round tx
medical tx– antibiotics, fluids, pain etc.
recurrent diverticulitis tx
SURGERY
most common complication post-diverticulitis
ABSCESS
okay to do barium enema and colonoscopy in diverticulitis?
NOOOOO–causes perforation
right lower quadrant pain in someone>60yo
CECAL diverticulitis
diagnostic test for ovarian torsion
doppler US
diagnosis of abdominal abscess
CT scan
treatment of abdominal abscess
CT or US guided incision and drainage, and antibiotics
US findings of acute cholecystitis
pericholecystic fluid and thickened gallbladder wall
only 2 differentials for abdo pain radiating to the back
- pancreatitis
2. aortic dissection
diagnostic test for appendicitis
CT scan
2 complications from appendicitis
abscess and gangrenous perforation
best imaging for pancreatitis
CT scan;
amylase= sensitive
lipase= specific
best imaging for diverticulitis
CT scan= best and most accurate