Ch. 92: Small Intestine Flashcards
DePompeo JAVMA 2018 poss pq
Intra-abdominal complications following intestinal anastomoses by suture & staple techniques in dogs
- dehiscence rates?
- subsequent dehiscence rates?
- any pre-op differences between the groups?
Dehiscence rates sutured 15% (12/93) and stapled 5% (4/87)
Subsequent dehiscence in 3/5 (60%) sutured vs 0/11 stapled anastomoses
No difference in serum albumin or preop septic peritonitis or anastomotic location
Gill JAVMA 2019 poss pq
Factors associated with dehiscence and mortality rates following GI surgery in dogs
- overall dehiscence? mortality rate?
- univariate lactate analysis?
- multivariate ASA analysis?
Overall dehiscence rate 5% ; mortality rate 5% (all dogs)
Univariate analysis: lactate increased with ASA status, increased lactate assoc w/ non-survival
Multivariate: ASA > 3 more likely dehiscence (18x) & dogs with ASA > 3 or high lactate less likely to survive
Strelchik JAVMA 2019 poss pq
Intestinal incisional dehiscence rate following enterotomy for FB removal in 247 dogs
- % dehiscence?
- dehiscence + non-survival?
- factors that were not associated with dehiscence?
Intestinal dehiscence in 2% (5/247) enterotomies, & only 2/5 of dehiscence didn’t survive to discharge
Nonsurvival to discharge S more common in dehiscence group vs non dehiscence
No S.A. between dehiscence and suture pattern, albumin, peritonitis, linear FB, location of incision, lactate, hypotension, neutrophils, sx experience, emergency
Sumner JAVMA 2019 poss pq
Evaluation of suture reinforcement for stapled intestinal anastomoses: 77 dogs (2008-2018)
- % dehiscence oversew vs. not?
- what blood work finding was higher in oversewn FEESA?
0 % oversewn dehisced, 15% nonoversewn dehisced
higher preop albumin and lower postop dehiscence rate for dogs with oversewn FEESA
Oversewing the transverse staple line in FEESA was associated with a reduced occurrence of postoperative dehiscence.
Lopez JAVMA 2021
Comparison of patient outcomes following enterotomy versus intestinal resection and anastomosis for treatment of intestinal foreign bodies in dogs
- dehiscence rates?
- ASA score + dehiscence?
- age + dehiscence?
183 single enterotomy, 44 single IRA
Dehiscence rate
Enterotomy = 5%
IRA = 20%
ASA score >3 and older age were associated with greater odds of intestinal dehiscence regardless of sx
Each year increase in age, the odds of dehiscence increased by 1.24
Anderson JSAP 2021
Outcome following surgery to treat septic peritonitis in 95 cats in the United Kingdom
- overall survival rate?
- hypotension + survival?
- abdominal mass or previous dehiscence - Px?
overall survival rate of 66%
intra op hypotension showed an ~82% decrease in the odds of survival
The presence of an abdominal mass or having dehiscence of a previous GI surgery did not confer a worse prognosis
Hoffman JVECC 2022
Retrospective evaluation of gastrointestinal foreign bodies and presurgical predictors for enterectomy versus enterotomy in dogs (2013-2016): 82 cases
list of PE, imaging, and sx findings more likely to need enterectomy?
More likely to require enterectomy:
- longer median duration illness (4 days vs 2 days for EO)
- higher median vomiting score (3 vs 2 for EO)
- altered peritoneal detail on rads
- echogenic peritoneal effusion on AUS
- perforation on ultrasound
- hyperechoic fat on AUS
- linear FB in sx
- perforation in sx
- devitalized bowel in sx
- higher HR
Each beat per minute increase in heart rate above EO group’s mean (119 bpm) increased the odds of an EC being performed by 1.07 times
Odds to receive an EC increased by 5.6 times for each tier of vomiting score
Brand Vet Sx 2019
Effects of needle gauge and syringe size on small intestinal leakage at injection sites
Protective effect for 22g needles both 5 & 10 cm segments
Injection of 20 ml higher odds ratio of leakage vs injection of 10 ml and 12 ml in 5 cm segments
Duffy Vet Sx 2020 poss pq
Ex vivo comparison of the effect of storage temperature on canine intestinal leakage pressures
- initial leak pressure fresh vs. chilled vs. frozen-thawed?
- difference in intraluminal pressure?
- leak location?
Mean Initial LP for fresh 52.9 mmHg, chilled 51.8 mmHg, frozen-thawed 29.8mmHg
No difference in max intraluminal pressure between groups
Major difference in leakage location
- chilled/freeze: suture holes
- fresh: incisional line
Fealey Vet Sx 2020
Initial leak pressures of 4 anastomosis techniques in cooled cadaveric canine jejunum
list pressures
ILP medians:
- control 331.8mmHg
- hand-sewn 35.17mmHg
- barbed suture 25mmHg
- FEESA 28.8mmHg
- FEESA-oversew 35.9mmHg
Mullen Vet Sx 2020
Gastrointestinal thickness, duration, and leak pressure of six intestinal anastomoses in dogs
- what is thickest?
- ILP vs. peristaltic pressures?
- fastest to complete?
Stomach thicker than everything else
The ILP of all anastomoses exceeded maximum intraluminal peristaltic pressures.
Stapled anastomoses were faster to complete
Duffy Vet Sx 2020 poss pq
Influence of overseeing the transverse staple line during functional end-to-end stapled intestinal anastomoses in dogs
- impact of oversewing?
- Cushing vs. simple continuous?
Oversewing the transverse staple line after FEESA increased MLP and decreased the occurrence of leakage at this location.
Oversewing with a Cushing pattern increased ILP compared with oversew with a simple-continuous pattern
Chu Vet Sx 2020
Ex vivo comparison of leakage pressures and leakage location with a novel technique for creation of functional side-to-side canine small intestinal anastomoses
- were anastomoses made using EBVS?
- Histopath findings?
- how to increase ILP with EBVS anastomosis?
Functional side-to-side small intestinal anastomosis was consistently achieved with an EBVS device. Histological examination was consistent with collagenous fusion without cavitation defects.
Augmentation of EBVS anastomoses with simple interrupted sutures along the anastomotic fusion line increased ILP compared with stapled anastomoses
Duffy Vet Sx 2022 poss pq
Influence of barbed suture oversew of the transverse staple line during functional end-to-end stapled anastomosis in a canine jejunal enterectomy model
- types of suture? pattern?
- difference in ILP or MLP?
- speed?
All oversewn with Cushing pattern (Bison, unidirectional barbed, bidirectional barbed)
No differences were detected in ILP or MLP between the experimental groups
FEESAs closed with a transverse staple line oversew using barbed suture, regardless of barb orientation, were completed faster and resulted in similar resistance to anastomotic leakage compared to monofilament suture
Mullen JAVMA 2021
Evaluation of intraoperative leak testing of small intestinal anastomoses performed by hand-sewn and stapled techniques in dogs: 131 cases (2008-2019)
- % leak tested?
- which technique more likely to undergo leak testing?
- % dehiscence of those leak tested?
- did dehiscence differ b/w leak test and not?
Intraoperative leak testing was performed during 62/144 (43%) small intestinal anastomoses
Hand-sewn anastomoses were significantly more likely to undergo leak testing than FEESAs
Dehiscence occurred in 5 (8%) of the 62 anastomoses that underwent leak testing
No significant difference in dehiscence was noted between anastomoses that underwent intraoperative leak testing versus those that did not, regardless of anastomotic technique
Mullen Vet Sx 2021
Ex vivo comparison of leak testing of canine jejunal enterotomies: saline infusion versus air insufflation
- which leaked at lower pressures?
- which allowed for ID of location of leak?
Enterotomy closures leaked at lower pressures when injected with air compared to saline
Leakage location found for all air constructs and 14/25 saline constructs
Culbertson Vet Sx 2021
Intraoperative surgeon probe inspection compared to leak testing for detecting gaps in canine jejunal continuous anastomoses: a cadaveric study
- sensitivity? NPV?
- location ID’d?
Probing was 100% sensitive with a 100% negative predictive value at detecting gaps compared with leak testing
The location of all anastomotic leaks was accurately identified with PT and confirmed during LT
Chang Vet Sx 2021
Influence of preconstructed effector loop location using a barbed unidirectional suture on leakage pressures following canine enterotomy closure
- mean ILP between groups?
- difference in MIP?
- influence on repair time?
- leakage locations?
- where should effector loop be placed?
Mean ILP for 0mm group was lower compared to all experimental groups with ILP ~40% lower
No difference in MIP among groups
Repair time increased as the distance of the effector loop increased > 5 mm
Leakage from 0mm group at incisional line (75%) compared to suture holes in other groups
Effector loop location should be placed > or = 5mm from the beginning of the incisional line