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Boards - Surgical Complications
OBGYN Qualifying Exam
234
Other
Post-Graduate
07/03/2020

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Term
definition of intraoperative hemorrhage
Definition
EBL >1000, or blood loss requiring transfusion
Term
risk factors for operative hemorrhage - 8
Definition
obesity, poor visibility, lack of experience, platelet inhibitors, supplements, blunt dissection, peritonectomy, cytoreduction
Term
effect at 30, 40, and 50% loss of blood volume
Definition
30 - cardiovascular instability, 40 - life threatening complications, 50 - lactic acidosis
Term
why does lactic acidosis occur during blood loss - 2
Definition
decreased Xa and prothrombin activity
Term
during blood loss what is considered hypothermia and what is the physiologic effect - 2
Definition
91.4-98.6F / 33-37C, impaired tissue factor and platelet function
Term
criteria for consumptive coagulopathy - 4
Definition
PLT <50, FIB <100, prolonged PT and PTT
Term
what level of fibrinogen has a 100% PPV for PPH
Definition
<200
Term
what is the mass transfusion ratio
Definition
1:1:1, PRBC, PLT, FFP
Term
when should the mass transfusion protocol be activated - 4
Definition
anticipated need of >50% blood volume in 2h, bleeding continues despite 4U PRBC in 1-2h, SBP <90, HR >120
Term
when should the mass transfusion protocol be terminated - 4
Definition
HCT >24%, INR <1.5, PLT >50, fibrinogen >100
Term
how much does hypogastric artery ligation decrease blood flow - total downstream, pelvic, vascular pulse pressure
Definition
total downstream 75%, pelvic 50%, vascular pulse pressure 85%
Term
when is vascular mesh good for bleeding
Definition
large artery injuries where suturing could cause stenosis
Term
how long is packing allowed to be left in place
Definition
24-72h
Term
what is in blood from cell salvage
Definition
just PRBC, no plasma/PLT/WBC
Term
what suction is needed for cell salvage
Definition
80-120 torr
Term
what does a cell salvage filter do
Definition
removes organisms and cells with a nucleus
Term
when does a cell salvage filter need to be changed
Definition
every 500cc
Term
compared to PRBC, cell salvage blood has 2 difference
Definition
mean RBC viability is increased, 2,3-diphosphoglycerate increased
Term
indications for cell salvage - 2
Definition
anticipated EBL >1000 or >30% volume loss
Term
contraindications of cell salvage - 5
Definition
gross bacterial contamination, cancer, solution causing lysis (sterile water, hydrogen peroxide, alcohol)
Term
relative contraindications of cell salvage - 5
Definition
hemoglobinopathies, topical clotting agents, urine contamination, amniotic fluid, bone chips
Term
complications of cell salvage - 2
Definition
air embolism, coagulopathy
Term
how to prevent air embolism in cell salvage - 1
Definition
transfer blood into secondary reinfusion bag
Term
prognosis of a good mass transfusion protocol
Definition
reduces mortality 15-25%
Term
rate of trochar placement injury
Definition
1.4%
Term
risk factors for laparoscopic injury - 8
Definition
abdominal surgery, abdominal mesh, PID, ruptured appendix, peritonitis, hernia repair, cardiopulmonary disease, diaphragmatic hernia
Term
risk of adhesions - no prior surgery, 1 prior LSC, prior midline
Definition
0.68% no surgery, 1.6% LSC, 51% midline
Term
50% of all laparoscopic surgical complication cause
Definition
primary trocar placement
Term
reduction of primary trocar placement injury - 3
Definition
gastric aspiration, drain bladder, t-bird
Term
signs of hypercapnia from LSC insufflation
Definition
arrhythmia
Term
management of hypercapnia from LSC insfullation
Definition
increase minute ventilation 10-25%
Term
#1 time gas embolism would occur in LSC
Definition
primary insufflation
Term
risks of gas emboli in LSC - 3
Definition
primary insufflation, prior abdominal surgery, venous bleeding
Term
signs of gas emboli - 10
Definition
sudden rise in pCO2 and decrease in pO2, hemodynamic collapse, mill wheel murmur, tachycardia, arrhythmia, hypotension, increased CVP, cyanosis, EKG with right heart strain
Term
diagnosis of gas emboli - 2
Definition
clinical, gas bubbles by central line into right atrium diagnostic
Term
management gas emboli - 5
Definition
release pneumo, hyperventilate with 100% O2, steep t-bird, left lateral decubitus, PAC in RA to aspirate CO2 bubbles
Term
risk factor for cutaneous emphysema
Definition
obesity
Term
signs of cutaneous emphysema
Definition
>10 mmHg
Term
prevention of cutaneous emphysema - 2
Definition
elevation of abdominal wall, repeat at steeper angle
Term
risks for port site metastasis
Definition
ovarian cancer is #1 esp if stage 3-4, carcinomatosis, or ascites, any cancer stage 3-4, LND
Term
mean time to presentation port site metastasis for ovarian vs cervical cancer
Definition
ovarian 17d, cervical 5mo
Term
physical risk factors for port site metastasis - 8
Definition
port removal, aerosolized tumor cells, gas expelled during decompression, metabolic/immune changes due to CO2, changes in peritoneal humidity, abdominal wall stretching, electrostatic port interaction, increased abdominal pressure
Term
#1 vessel injured
Definition
inferior epigastric
Term
how must you adjust primary port placement in obese patients
Definition
the umbilicus will sag lower so use the iliac crest to identify the location of L4 which is the bifurcation of the aorta
Term
veres needle angle obese vs thin
Definition
45 deg thin, >45 deg ovese
Term
how do you place trocars to avoid the inferior epigastrics
Definition
lateral to the rectus muscles
Term
what do you do if you draw back blood on veres
Definition
remove it and try again, leaving in place may increase the defect
Term
if you put in a transabdominal suture for inferior epigastric bleeding when do you remove it
Definition
8-24h
Term
what is the least effective way to deal with inferior epigastric bleeding
Definition
cautery
Term
normal amount of abdominal air after laparoscopy and duration
Definition
40% will have 2cm pocket of subdiaphragmatic air at 28h which can be seen up to 1wk
Term
signs of visceral injury after laparoscopy
Definition
ileus, excessive air on imaging
Term
what do you do if you poke an organ with the veres and specifically the bladder
Definition
remove and restart, no repair, drain bladder 5d
Term
what do you do if you poke an organ with a trocar, and specifically the bladder
Definition
leave in place to help with identification, x-lap and repair, if bladder
Term
what do you do if you electrocautery an organ
Definition
resect 102cm of viable tissue and repair primairly
Term
what is likely to have caused an immediate anaphylactic reaction in the OR - 1
Definition
PCN, cephs, neuromuscular blockers, hypnotic induction agents
Term
#1 cause of immediate OR anaphylaxis
Definition
antibiotics 50%
Term
causes of delayed anaphylaxis after surgery - 5
Definition
latex, blood products, colloid volume expanders, protamine, dyes
Term
percent of OR related anaphylaxis that is immediate
Definition
90% within 5-10min of exposure
Term
treatment of anaphylaxis - 3
Definition
fluids, epinepherine, hydrocortisone
Term
signs of adrenal crisis - 6
Definition
fatigue, vomiting, abdominal pain, joint pain, salt craving, hyperpigmentation
Term
causes of adrenal crisis - 5, which is #1
Definition
exogenous glucocorticoids #1, hyperthyroidism, genetic disorders, autoimmune disease, adrenal hemorrhage
Term
management of adrenal crisis - 3
Definition
high dose hydrocortisone, rapid IV fluid infusion, cardiac monitoring
Term
% of lymphedema related to GYN ONC surgeries
Definition
2-44%
Term
risk factors for lymphedema - 3
Definition
more nodes taken (independent risk factor), more distal nodes taken, radiation therapy
Term
complications of lymphedema - 3
Definition
DVT, lymphocytosis, PE
Term
incidence of OSA
Definition
10%
Term
management of OSA - 4
Definition
regional anesthesia instead of general if possible, NSAIDS/regional post op instead of opioids, no PCA, lateral and upright positions
Term
complications of OSA associated with surgery - 4
Definition
arrhythmia, acute renal failure, wound complications, post-operative delirium
Term
if someone is not improving with routine OSA management what do you work them up for
Definition
PE
Term
#1 cause of abdominal hernia
Definition
12mm ports
Term
percent incidence of abdominal hernia
Definition
1%
Term
how long does it usually take for an abdominal hernia to form
Definition
11-20% by 1-3y, increased incidence at 10y
Term
patient risk factors for hernia formation - 5
Definition
obesity, DM, smoking, malignancy, prior laparotomy
Term
operative risk factors for hernia formation - 5
Definition
wound infection, wound dehiscinence, immune suppression or steroids, maternal to close wound, suture technique
Term
rate of incarceration and strangulation of hernia
Definition
incarceration 6-15%, strangulation 2%
Term
management of the 2 types of hernias
Definition
early: acute, requires repair. Late: painless, repair if symptomatic.
Term
criteria for expectant management of a hernia - 2
Definition
wide mouthed, no concern for incarceration
Term
management of a small hernia
Definition
<3cm close without mesh
Term
management of a medium hernia
Definition
3-10cm close with mesh, can be done laparscopically
Term
indications a hernia needs to be repaired via laparotomy - 3
Definition
>10cm, prior hernia repair, open wound
Term
type of mesh used in hernia repair and why
Definition
polypropolene reduces inflammatory reaction which leads to better collagen synthesis
Term
complications of hernia repair - 5
Definition
seroma, wound infection, intra-abdominal injury, mesh infection, enterocutaneous fistula
Term
recurrence of a hernia after 1st and 2nd repair
Definition
1st 25-54%, second likely to fail
Term
prevention of a hernia - 4
Definition
repair all fascia defect >5mm, remove ports under direct visualization, expel CO2 from umbilical port, replace obturator into trocar on removal to stop omentum from coming into hole
Term
define vaginal cuff dehiscinence
Definition
partial or full separation of the cuff
Term
define vaginal cuff eviceration
Definition
extrusion of bowel
Term
incidence of vaginal cuff dehiscinence - cumulative, robotic, TLH, LAVH, TAH, TVH
Definition
cumulative 0.25%
TAH 0.25%
TVH 0.25%
LAVH 0.4%
TLH 2%
robotic sources up to 6%
Term
risks for vaginal cuff dehyscinence - 12
Definition
immune compromised, smoking, obesity, DM, chronic cough, poor nutrition, steroids, intercourse, excessive Valsalva, PMP, cuff infection, cuff hematoma
Term
when does vaginal cuff dehiscinence occur
Definition
2wk-3mo post op
Term
management of vaginal cuff dehiscinence
Definition
broad spectrum antibiotics, immediate vaginal closure unless you cant reduce bowel or there is bowel trauma
Term
prevention of vaginal cuff dehiscinence - 4
Definition
cut/suture don't cauterize cuff, 2 layer cuff closure, bidirectional barbed suture, vaginal closure
Term
#1 cause of bowel injury
Definition
LOA
Term
% of bowel injuries unrecognized
Definition
50%
Term
method of most bowel injuries
Definition
30% thermal
Term
signs of unrecognized bowel injury - 12
Definition
infection, obstruction, malabsorption, fistula, peritonitis, sepsis, multiorgan failure, pain at nearest trocar site, fever, diarrhea, abdominal distention, leukocytosis
Term
how to sew the bowel
Definition
perpendicular to the long axis
Term
indication for resection/reanastamosis - 3
Definition
2+ areas of injury, required 4U+ PRBC, significant contamination/leakage
Term
repair of a thermal bowel injury
Definition
resect 3-5cm around the blanched area to prevent further necrosis, reanastamosis
Term
how do you determine if you need to resect a laceration bowel injury
Definition
<1/2 circumference and no crushed edges can close, >1/2 circumference or crushed edges resect
Term
if you are going to close a laceration bowel injury how do you do it
Definition
serosa/seromuscular - interrupted 3-0 absorbable vicryl in 1-2 layers perpendicular to long axis.
full thickness - double layer, interrupted with 3-0 chromic then inbricated with 3-0 absorbable for serosa perpendicular to long axis
Term
indications for a diverting colostomy - 5
Definition
unresectable pelbic mass, carcinomatosis, colon injury with fecal contamination, irradiated operative field, infected/inflammaed operative field (PID, diverticulitis)
Term
what is a hartmans pouch
Definition
leaving a portion of the rectum in a diverting colostomy so you have the option to reverse later
Term
follow up management after bowel injury
Definition
<1cm, partial thickness, or puncture - none. >1cm , full thickness, delayed, necrotic, infected - clear liquid diet until return of bowel function
Term
risk factors for ileus - 10
Definition
prolonged surgery, open surgery, routine NG, lower GI surgery, peritonitis, sepsis, pneumonia, abscess, bleeding, opioids
Term
signs of ileus - 7
Definition
distention, mild diffuse pain, nausea, vomiting, absent/quiet bowel sounds, delayed flatus, diarrhea
Term
signs of KUB for ileus
Definition
diffuse air including small bowel, no transition point
Term
3 types of ileus and their physiology
Definition
spastic: muscle contraction no propulsive motility
ischemic: muscle cant make coordinated movements due to ischemia
adynamic: reduced or absent motility
Term
causes of spastic ileus - 2
Definition
heavy metal poisoning, porphyria
Term
causes of adynamic ileus - 3
Definition
abdominal surgery, metabolic, neuronal
Term
factors that worsen the duration and severity of ileus - 5
Definition
age, length of surgery, amount of bowel trauma, lyte imbalances, infection
Term
how long does it take for the small bowel, stomach, and colon to return to function
Definition
small bowel 24h, stomach 24-48h, colon 48-72h
Term
expectant management for ileus - 4
Definition
NPO, reduce narcotics, IV hydration, NG decompression PRN
Term
how long can you wait out an ileus, what do you do then
Definition
3-4d, CT abdomen, concern for obstruction
Term
3 benefits of early post op feeding
Definition
shorter hospital stay, decreased time to solid food, patient satisfaction
Term
does chewing gum, early feeding, coffee, and ambulation help ileus
Definition
all no
Term
% of patients with ovarian cancer that get a SBO
Definition
50%
Term
what is LaPlace's law
Definition
tension on surface of a cylinder proportional to diameter and pressure - ie - tension on the bowel cuts off the venous return but not the arterial in causing complete vascular insult (necrosis, peritonitis, septic shock, perforation)
Term
what is the weakest part of the colon
Definition
cecum
Term
2 types of SBO
Definition
simple: intact blood supply, strangulated: compromised mesenteric vessels
Term
causes of simple SBO 5 and their categories
Definition
obstruction of lumen (gallstone, bezor), extrinsic compression of lumen (chrons, tumor), intrinsic compression of lumen (adhesion)
Term
causes of strangulation SBO - 4
Definition
adhesions, torsion (hernia, volvus, intussception)
Term
signs of a SBO - 8
Definition
nausea, vomiting (bilious, feculent), anorexia, distention, severe colicky pain, delayed flatus, high pitched tinkling or absent bowel sounds
Term
signs of SBO on KUB - 4
Definition
air fluid levels in dilated loops, air fluid levels with stair stepping, proximal bowel dilation and distal collapse, gasless abdomen
Term
management of SBO - 6
Definition
fluids, lytes, NPO, NG tube, parentrail hyperalimentation if >10d NPO, surgery is last resort
Term
prevention of SBO - 5
Definition
minimize bowel handling and packing, hemostasis, avoid peritoneal contamination, advance diet slowly, ambulate
Term
causes of large bowel obstruction - 3
Definition
tumor, scarring, radiation
Term
major complication large bowel obstruction
Definition
rupture of the cecum
Term
management of large bowel obstruction - 3 options
Definition
emergent surgery - colostomy by transverse loop or end colostomy. cecostomy tube is ostomy not feesible. clonic stenting good if pallative
Term
definition of oliguria - 2
Definition
<400-500 mL/d or <17-21 mL/h
Term
initial step if post-op oliguria
Definition
check foley, I/o or bladder scan
Term
second step if post-op oliguria
Definition
fluid challenge with isotonic fluid LR/NS
Term
third step if post-op oliguria
Definition
labs and imaging
Term
labs to get if oliguria - 5
Definition
FENA, urine microscopy, urine osmolality, BUN, Cr
Term
imaging to consider if post op oliguria - 3
Definition
renal US #1 because can indicate back up if enlarged, bladder US, abdominal US
Term
4 labs indicating pre-renal etiology
Definition
FENA <1%, urine osmo >550 omosm/kg, bland urine sediment, BUN 10x Cr
Term
3 labs indicating renal etiology
Definition
FENA >3%, urine osm 250-300 mosm/kg, active urine sediment
Term
3 signs indicating post-renal etiology
Definition
anuria, elevated PVR, hydronephrosis
Term
causes of pre-renal oliguria - 7
Definition
volume depletion, bleeding, hypotension, renal vascular stenosis or thrombosis, cardiac failure, sepsis
Term
causes of renal oliguria - 7
Definition
drug necrosis, AKI, interstitial nephritis, glomerulorapathy, TTP, HUS, HELLP
Term
causes of post renal oliguria - 5
Definition
bladder or ureter injury or obstruction, urinary retention
Term
long term complications of AKI - 5
Definition
permanent renal damage, ischemic bowel, delirium, stroke, MI
Term
% of hospitalized that have AKI
Definition
1-9%
Term
$ of critically ill that have AKI
Definition
40%
Term
acute complications of AKI - 3
Definition
fluid overload, electrolyte imbalance, coagulopathy
Term
drugs to avoid in AKI - 5
Definition
NSAIDs, radiocontrast, aminoglycosides, ACEI/ARB, diuretics
Term
when in AKI do you need to do dialysis for sure
Definition
volume overload
Term
risk factors for AKI - 4
Definition
DM, HTN, sepsis, hypovolemia
Term
in AKI what is directly associated with a risk of death
Definition
fluid overload
Term
name that renal etiology for oliguria - hypertension, hemolytic anemia, thrombocytopenia - 3
Definition
TTP, HUS, HELLP
Term
name that renal etiology for oliguria - hypertension, proteinuria, hematuria, RBC casts, dysmorphic RBC
Definition
glomerular - steroids, cyclophosphomide
Term
name that renal etiology for oliguria - toxin, rash, fever, eosinophilia
Definition
interstitial nephritis - steroids, eliminate toxin
Term
name that renal etiology for oliguria - ischemia, coarse brown granular casts
Definition
acute tubular necrosis - eliminate toxin, supportive
Term
what are the 4 phases of healing
Definition
hemostasis, inflammation, migration/epithelization, remodaling
Term
what occurs in the hemostasis phase of healing - 5
Definition
clotting cascade, then platelet aggregation, release of growth factors, cytokines, and fibrin matrix
Term
what occurs in the inflammation phase of healing - 2, how long does it take
Definition
complete within 3d, increased vascular permability, cellular recruitment
Term
what occurs in the epithelization phase of healing - 2
Definition
basal cell proliferation, epithelial migration
Term
what occurs in the remodeling phase of healing - 4
Definition
collagen cross linking, collagen remodeling, wound contraction, repigmentation
Term
define seroma
Definition
collection of serum in the subcutaneous tissue
Term
define hematoma
Definition
collection of blood in the subcutaneous tissue
Term
wound type more common to get hematoma
Definition
transvers incisions
Term
leading cause of superficial wound separation
Definition
hematoma/seroma
Term
when does hematoma/seroma occur
Definition
POD3-7
Term
management of hematoma/seroma
Definition
small expectant, large drain and back, allow to close by secondary intention, can close when granulation tissue present if no signs of infection
Term
prevention of hematoma/seroma - 2
Definition
meticulious hemostasis, drains
Term
drains decrease ___ but increase ____
Definition
hematoma/seroma, infection
Term
incidence of wound infection in operations
Definition
5%
Term
management of wound infections - 5
Definition
systemic antibiotics, open wound, drain purulence, debride, wet to dry dressing, close by secondary intention
Term
define fascial dehiscinence
Definition
separation of all abdominal wall layers except peritoneum
Term
define fascial evisceration
Definition
separation of all abdominal wall layers including peritoneum
Term
causes of fascial dehiscinence - 3
Definition
necrosis from tight sutures, too much tension, knot failure
Term
preferred diagnostic method fascial dehiscinence
Definition
CT
Term
prevention of fascial dehiscinence - 3
Definition
1-0 or 2-0 delayed absorbable monofilament suture, bites >1cm, non-strangulation
Term
management of fascial dehiscinence
Definition
wound exploration in the OR, mass closure with continuous or retention sutures, skin closed by primary or secondary intention
Term
3 types of necrotizing fasciitis
Definition
1 - polymicrobial
2 - GAS, S. aureus, MRSA
3 - gas gangrene
Term
microbs in polymicrobial necrotizing fasciitis - 3
Definition
C. septicum, C. sodtelli, bowel flora
Term
microbe in gas gangrene
Definition
Clostridium perfringes
Term
location of polymicrobial necrotizing fasciitis
Definition
perineum, trink
Term
causes/associations with polymicrobial necrotizing fasciitis - 3
Definition
surgery, trauma, abdominal abscess
Term
necrotizing fasciitis type 2 locations
Definition
extremities, unless from a surgical site
Term
necrotizing fasciitis which type progresses rapidly
Definition
GAS, S. aureus
Term
necrotizing fasciitis type 2 who does it usually affect
Definition
young, immune compormised
Term
signs of necrotizing fasciitis - 10
Definition
fever, tachycardia, hypotension, tense edema, bullae, SQ gas, crepitus, dish water discharge, pain out of proportion, necrosis of skin
Term
necrotizing fasciitis CT signs - 2
Definition
thick fascia, SQ gas
Term
necrotizing fasciitis CT sensitivity for diagnosis
Definition
80%
Term
necrotizing fasciitis antibiotics
Definition
carbapenem/unisym + vanc/dapto (for MRSA) + clinda
Term
#1 factor in decreasing mortality in necrotizing fasciitis
Definition
debridment within 24h, if not 9d death
Term
necrotizing fasciitis when do you stop debriding
Definition
when no more necrosis
Term
necrotizing fasciitis when do you use hyperbaric oxygen
Definition
severe cases, decreases mortality
Term
necrotizing fasciitis overall mortality
Definition
25-35%
Term
define post-operative fever
Definition
>101.4F/38C x2 >6h apart or >/= 101.5 x1
Term
causes of immediate post-operative fever - 7
Definition
transfusion reaction, anesthesia reaction, trauma, infection before surgery, malignant hyperthermia, antibiotic reaction, other drug reaction
Term
what factors released cause trauma itself to cause fever - 4
Definition
IL1, IL6, TNFa, TNFg
Term
causes of fever 1-7d post-op - 9
Definition
SSI, cath associated UTI, atelectasis, pancreatitis, MI, PE, thrombophlebitis, ETOH withdrawal, acute gout
Term
causes of fever 1-4wk post-op - 12
Definition
SSI, UTI, abscess, cellulitis, unrecognized bowel or bladder injury, central line infection, c. diff, thrombophlebitis, DVT, PE, meds
Term
causes of fever >4wk post op - 5
Definition
blood product virus infection, implanted medical device infection, delayed cellulitis, endocarditis, thrombophlebitis
Term
work up for post-op fever - 9
Definition
physical exam, CXR, UA, UCx, CBC, BCx, LE dopplers, CT A/P, TTE
Term
management of post-op fever of unknown location
Definition
empiric antibiotics - Levaquin/flagyl, unasyn if no response in 48h repeat work up
Term
what if you have a post-op fever of unknown origin and you had no response to empiric antibiotics in 48h and you redid the work up and it is still negative, what do you do
Definition
treat for thrombophlebitis
Term
risk factors for septic pelvic thrombophlebitis - 2
Definition
chorio, endometritis
Term
signs of septic pelvic thrombophlebitis - 8
Definition
persistent high fevers despite antibiotics, non-toxic appearing, tachycardia, ileus, nausea, vomiting, pelvic pain, potential leukocytosis
Term
chances youll see septic pelvic thrombophlebitis on CT/MRI
Definition
50%
Term
chances you see septic pelvic thrombophlebitis on US
Definition
30%
Term
septic pelvic thrombophlebitis - treatment
Definition
broad spectrum antibiotics, heparin or lovenox, DC all when afebrile for 48h
Term
how long does septic pelvic thrombophlebitis last
Definition
fevers usually last 2-5d after starting treatment
Term
risk factors of C. diff - 4
Definition
extremes of age, nursing home, prolonged hospitalization, prolonged antibiotics
Term
diagnosis of c. diff - 2
Definition
stool culture or toxin
Term
what do you NEVER do if you suspect c. diff
Definition
barium enema or endoscopy leads to perforation
Term
treatment of c. diff - 4
Definition
no anti-diarrheals, flagyl 500mg TID 10-14d, vanc 125-500mg q6h PR, fecal transplant if severe
Term
do you do a TOC for c. diff
Definition
no, will be positive for weeks
Term
complications of c. diff - 5
Definition
toxic megacolon, pseudomembranous colitis, necrotizing colitis, perforation
Term
relapse rate of c. diff
Definition
20%
Term
incidence of post-op abscess in GYN surgery
Definition
<1%
Term
single consistent association with post-op abscess
Definition
blood transfusion
Term
risk factors for post-op abscess - 6
Definition
blood transfusion, >80yo, obesity, diabetes, immune suppression, surgery >3h
Term
rate of post-op abscess per method of hyst
Definition
TAH 4%, TLH 2%, TVH 1%
Term
what should you consider if your treating cuff cellulitis and it isn't working
Definition
post op abscess
Term
treatment of post-op abscess
Definition
IV for 48h AND - abscess is shrinking, leukocytosis is resolving, and clinical improvement - followed by 14d of PO abx
Term
IV antibiotics for post-op abscess - 3 regimens
Definition
piperacillin-tazobactam 3.375 IV q6h OR ceftriaxone + clinda or metronidazole OR aztreonam + clinda or metronidazole
Term
when should you remove a post-op abscess in the OR - 2
Definition
hemodynamically unstable, peritoneal signs
Term
PO regimens for after IV in post-op abscess - 2
Definition
metronidazole 500mg q12h + Bactrim 1600/800mg q12h OR amoxicillin clavulanate 875/125mg q12h
Term
management of post op abscess based on size
Definition
>/= 7cm IR drainage and abx, 2-7cm consider IR draining do abx, <2cm abx only
Term
prevention of post-op abscess - 3
Definition
treat BV, stabilize pre-existing medical conditions, antibiotic prophylaxis
Term
risks factors for ovarian remnant syndrome - 4
Definition
dense pelvic adhesions, IBD, endometriosis, perioperative bleeding
Term
which side is ovarian remnant syndrome more common on and why
Definition
left, limited visibility of the IP ligament when sigmoid is attached to pelvic brim
Term
diagnosis of ovarian remnant syndrome - 3
Definition
definitive requires surgical resection with histology, suggestion on TVUS 90% of time, stimulation with clomiphene for 10d and repeat TVUS if cant see
Term
% of non-cardiac surgeries with a MI
Definition
8%
Term
% of non-cardiac surgeries with significant M/M due to cardiac complications
Definition
2%
Term
discontinuation of ACEI 24h before surgery improves - 3
Definition
decreases mortality, MI, CVA
Term
prophylactic BB need to be started when before surgery to have what benefit
Definition
starting within 1d of surgery reduces MI but has more deaths, starting within 1wk of surgery improvs outcomes in high risk patients
Term
should you DC HCTZ before surgery
Definition
consider, may have lyte abnormalities, hypovolemia, delirium in elderly, does not help risk reduction
Term
risks for post-operative delirium - 4
Definition
>65yo, severe illness, comorbidities, limited mobility
Term
causes of post-operative delirium (not meds) - 6
Definition
febrile illness, intoxication, electrolyte imbalance, CVA, pneumonia, PE
Term
meds that can cause post-op delirium - 6
Definition
anticholinergics, sedatives, hypnotics, meperidine, diphenhydramine, benzos
Term
prevention of post op delirium - 4
Definition
avoid causative medications in elderly, minimize polypharmacy, ensure has eye glasses and hearing aids, low dose anti-psychotics if all measures fail
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