Evaluation of nutritional status as an independent predictor of post-operative complications and morbidity after gastro-intestinal surgery

478 Background: Radical cystectomy (RC) with neoadjuvant chemotherapy (NAC) is the standard of care for muscle invasive bladder cancer and has a high rate of complications. Malnutrition is common among RC patients and is an established risk factor for peri-operative complications. The association of NAC and nutritional status and its effect on post-operative complications is not fully understood. We hypothesize that NAC hinders nutritional status and thus increases complication rates after RC. Methods: We retrospectively examined the records of NAC/RC patients. We included demographic, clinical and pathologic data and type and cycle number of NAC. Nutritional status was assessed with the smooth muscle area (SMA) of the psoas muscle at the level of L4 vertebrae measured on cross-sectional imaging. Patients with missing imaging data were excluded. SMA was measured pre and post NAC. The difference between the measurements was used as a predictor variable (delta_SMA). The outcomes assessed were ileus, infection, rehospitalization and a composite outcome of any complication. Results: The study included 50 patients, from 3 high volume centers in Israel. Median delta_SMA was -197 (-366, -88) mm2. Demographic, clinical and pathologic parameters were similar in patients with and without complications. delta_SMA was an independent predictor of ileus (OR = 0.98, p=0.003), peri-operative infection (OR = 0.98, p=0.0015) and any complications (OR = 0.98, p = 0.011) on univariable analysis. Delta_SMA remained an independent predictor of ilieus (OR 0.97, p=0.014), peri-operative infections (OR 0.95, p=0.023) and any complications (OR 0.98, p=0.01) on multivariable regression analysis. Delta_SMA was not a significant predictor of rehospitalization. Conclusions: In patients undergoing RC, NAC causes a measurable nutritional insult. The change in SMA predicts significant peri-operative complications. Future studies should examine the role of nutritional intervention during NAC in the framework of a clinical trial.

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Pelvic Canal Narrowing Caused by Triple Pelvic Osteotomy in the Dog

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1633130 ◽

1994 ◽

Vol 07 (03) ◽

pp. 110-113 ◽

Cited By ~ 6

Author(s):

D. L. Holmberg ◽

M. B. Hurtig ◽

H. R. Sukhiani

Keyword(s):

Postoperative Complications ◽

Pelvic Osteotomy ◽

Cross Sectional Area ◽

Sectional Area ◽

Cross Sectional ◽

Canal Width ◽

Operative Complications ◽

Post Operative Complications

SummaryDuring a triple pelvic osteotomy, rotation of the free acetabular segment causes the pubic remnant on the acetabulum to rotate into the pelvic canal. The resulting narrowing may cause complications by impingement on the organs within the pelvic canal. Triple pelvic osteotomies were performed on ten cadaver pelves with pubic remnants equal to 0, 25, and 50% of the hemi-pubic length and angles of acetabular rotation of 20, 30, and 40 degrees. All combinations of pubic remnant lengths and angles of acetabular rotation caused a significant reduction in pelvic canal-width and cross-sectional area, when compared to the inact pelvis. Zero, 25, and 50% pubic remnants result in 15, 35, and 50% reductions in pelvic canal width respectively. Overrotation of the acetabulum should be avoided and the pubic remnant on the acetabular segment should be minimized to reduce postoperative complications due to pelvic canal narrowing.When performing triple pelvic osteotomies, the length of the pubic remnant on the acetabular segment and the angle of acetabular rotation both significantly narrow the pelvic canal. To reduce post-operative complications, due to narrowing of the pelvic canal, overrotation of the acetabulum should be avoided and the length of the pubic remnant should be minimized.

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