Perioperative optimization and profitability (POP) in a high-volume bariatric surgery center.

Background: Currently, bariatric surgery is the most effective long-term treatment of obesity. Sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB) are the primary types of bariatric surgery performed worldwide. To minimize the risks of surgical complications and optimize cost-effectiveness, it is essential to develop fast-track protocols and patient logistics.

Complications in Patients Undergoing Laparoscopic Bariatric Surgery in an ERABS-optimized, High-Volume, Single Center During 2020 and 2021.

Purpose: Complication rates after fast-track optimization in bariatric surgery are varying. The aim of this study was to identify short-term complications in patients undergoing laparoscopic sleeve gastrectomy (SG) in an ERABS (enhanced recovery after bariatric surgery) optimized setup.

Materials And Methods: This study is an observational analysis of a consecutive cohort of 1600 patients undergoing SG at an ERABS-optimized, private hospital during 2020 and 2021.

Resistive index: an experimental study of acute complete unilateral ureteral obstruction.

Rationale And Objectives: To study the effects of acute complete unilateral ureteral obstruction (UUO) and release on porcine renal resistive index (RI).

Methods: Under general anesthesia, UUO was induced in six pigs. RI was measured bilaterally at predetermined intervals for 4 hours of UUO and 1 hour of release.

Renal water and sodium handling during gradated unilateral ureter obstruction.

Objective: Unilateral complete obstruction of the ureter (UUO) is associated with characteristic changes in renal function. To improve the understanding of how urine concentration directly is affected by changes in pelvic pressure, changes in renal salt and water handling along the nephron and collecting duct were examined.

Material And Methods: Pelvic pressure was raised stepwise using an adjustable lever inserted in the right ureter.

Losartan attenuates renal vasoconstriction in response to acute unilateral ureteral occlusion in pigs.

Unilateral ureteral obstruction in pigs is associated with an enhanced, de novo generation of angiotensin II from the ipsilateral kidney. In order to further investigate the role of this system during unilateral ureter obstruction, the renal hemodynamic response to the non-peptide angiotensin II antagonist losartan was investigated. Danish land race pigs were operated on under general anesthesia.

Reduced renal vascular resistance in response to verapamil during gradated ureter obstruction in pigs.

Unilateral ureteral obstruction (UUO) is associated with reductions in ipsilateral renal blood flow (RBF) and glomerular filtration rate (GFR) caused by an active preglomerular vasoconstriction, where angiotensin II (ANGII) may be an important mediator. Calcium-channel blockers preferentially dilate preglomerular vessels and abolish the vasoconstrictor actions of ANGII in preglomerular arterioles of the hydronephrotic rat kidney. In this study, we, therefore, examined the effects of the calcium-channel blocker verapamil (3.

Surgically induced urologic models in swine.

The porcine urological system is similar anatomically and physiologically to that of humans. Swine have a true multirenculate, multipapillate kidney with a calyceal system like that of humans. The gross anatomic and histologic characteristics of the porcine and the human kidney are more similar than most other commonly used laboratory animals.

The effect of bladder outlet obstruction on tissue oxygen tension and blood flow in the pig bladder.

Objective: To investigate the effect of partial bladder outlet obstruction on detrusor blood flow and oxygen tension (PdetO2) in female pigs.

Materials And Methods: Detrusor-layer oxygen tension and blood flow were measured using oxygen-sensitive electrode and radiolabelled microsphere techniques in five female Large White pigs with a partial urethral obstruction and in five sham-operated controls. The effects of chronic outlet obstruction on bladder weight, and cholinergic nerve density and distribution, are also described.

Renal hemodynamic response to gradated ureter obstruction in the pig.

In anesthetized pigs with ultrasonic flow probes mounted on each renal artery and catheters placed in the abdominal aorta and both renal veins, renal blood flow (RBF), glomerular filtration rate (GFR) and filtration fraction (FF) were investigated during stepwise unilateral ureteral obstruction. Elevation of the ureteral pressure in steps of 10 mm Hg to a maximum of 80 mm Hg decreased ipsilateral RBF by 45 +/- 3% from 300 +/- 25 to 168 +/- 20 ml/min (p < 0.01).