Publications by authors named "Ahmed M Al-Mazrou"
Introduction: This study aims to identify risk factors associated with 30-day major complications, readmission, and delayed discharge for patients undergoing robotic bariatric surgery.
Methods: From the metabolic and bariatric surgery and accreditation quality improvement program (2015-2018) datasets, adult patients who underwent elective robotic bariatric operations were included. Predictors for 30-day major complications, readmission, and delayed discharge (hospital stay ≥ 3 days) were identified using univariable and multivariable analyses.
Introduction: This study evaluates the performance of bariatric surgery prior to and after the implementation of Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP).
Methods: The eras prior to (2007-2015) and after (2016-2018) the transition to MBSAQIP were compared for patients, operations and outcomes using adjusted logistic regression estimates.
Results: Thirty-day surgical (6%vs.
Clinical outcomes in colorectal cancer (CRC) correlate with T cell infiltrates, but the specific contributions of heterogenous T cell types remain unclear. To investigate the diverse function of T cells in CRC, we profiled 37,931 T cells from tumors and adjacent normal colon of 16 patients with CRC with respect to transcriptome, TCR sequence, and cell surface markers. Our analysis identified phenotypically and functionally distinguishable effector T cell types.
View Article and Find Full Text PDFIntroduction: This study aims to characterize the variability in clinical outcomes between open, laparoscopic, and robotic Duodenal Switch (DS).
Methods: From the Metabolic and Bariatric Surgery and Accreditation Quality Improvement Program, patients who underwent DS (2015-2018) were identified. Open DS was compared to laparoscopic and robotic approaches with for patients factors, perioperative characteristics, and 30-day postoperative outcomes.
Introduction/purpose: This study evaluates the outcomes of robotic duodenal switch (RDS) when compared to conventional laparoscopy (LDS).
Materials And Methods: Using the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP), patients who underwent RDS were compared to those of LDS (2015-2018) for perioperative characteristics and thirty-day postoperative outcomes. Operative complexity, complications, and resource utilization trends were plotted over the included years for the two approaches.
Introduction/purpose: Reasons of postoperative readmissions may vary based on the timing of rehospitalization. This study characterizes predictors and causes for readmission after bariatric surgery on day-to-day basis after discharge.
Materials And Methods: Using the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program data, patients who underwent Roux-en-Y gastric bypass or sleeve gastrectomy were identified.
Background: Self-expanding metal stents (SEMS) are used as a bridge to surgery for colon cancer patients as an alternative to emergency surgery. Currently, there is a paucity of literature from Saudi Arabia on the preoperative usage of SEMS.
Objective: Determine whether SEMS are associated with a higher rate of complications.
Background: We evaluate trends in outcomes after colorectal resection over the decade of the introduction of ACS-NSQIP as well as of targeted-colectomy information.
Study Design: From 2007 to 2016, patients undergoing non-emergent colorectal procedures were included. Demographics, operative complexity (American Society of Anesthesiologists and wound classes); complications, early (<5 days) discharge and mortality were plotted over years.
Background: We assessed the differences in postoperative feeding outcomes when comparing early and traditional diet advancement in patients who had an ostomy creation.
Methods: At a U.S.
Objective: Compare the ACS-NSQIP risk calculator with institutional risk for colorectal surgery.
Methods: Actual and predicted outcomes were compared for both cohort and individuals.
Results: For the cohort, the risk calculator was accurate for 7/8 outcomes; there were more serious complications than predicted (19.
Background: Previous assessments of the impact of epidural analgesia (EA) on outcomes after colorectal surgery were related to the period before widespread implementation of the enhanced recovery after surgery (ERAS) protocols. This study evaluates the impact of EA on postoperative recovery after colectomy using recent multicenter data.
Methods: Patients who underwent elective colectomy from the American College of Surgeons (ACS) National Surgical Quality Improvement Program (NSQIP) data (2014-2015) were identified.
Purpose: This study aims to assess factors associated with preventable readmissions after colorectal resection.
Methods: All readmissions following colorectal resection from May 2013 to May 2016 at an academic medical center were reviewed. Readmissions that could be prevented were identified.
Background: Previous analyses evaluating alvimopan included patients at varying risk for ileus after intestinal resection, which may have precluded its widespread adoption. We assess the early and delayed effects of alvimopan in patients stratified by risk for ileus after intestinal and colon resection.
Methods: From the Premier Perspective database, patients with elective small and large bowel resections from 2012 to 2014 were identified.
Background/purpose: While the use of oral antibiotic (OA) for bowel preparation is gaining popularity, it is unknown whether it increases the risk of Clostridium difficile infection (CDI). This study aimed to evaluate the impact of OA on the development of CDI after colectomy.
Methods: Patients who underwent colectomy from the ACS-NSQIP data (2015 and 2016) were included.
Purpose: The study aims to evaluate the clinical and financial outcomes of the use of robotic when compared to laparoscopic colorectal surgery and any changes in these over time.
Methods: From the Premier Perspective database, patients who underwent elective laparoscopic and robotic colorectal resections from 2012 to 2014 were included. Laparoscopic colorectal resections were propensity score matched to robotic cases for patient, disease, procedure, surgeon specialty, and hospital type and volume.
Background: This study aimed to evaluate variations in prolonged outcome after proctectomy based on hospital volume.
Study Design: From the Premier Perspective database (2012-2014), hospital volumes for proctectomy of benign and malignant conditions were classified as low, intermediate and high. Hospitals were grouped into tertiles.
Background: Factors associated with discharge destination after colectomy despite accounting for surgical morbidity have not previously been well characterized. This study aims to evaluate perioperative predictors for extended care after complicated and uncomplicated colectomy.
Methods: Patients admitted from home for elective colectomy were identified from the American College of Surgeons, National Surgical Quality Improvement Program, 2012-2013 general and colectomy-targeted datasets.
Purpose: Robotic surgery has helped overcome several of the inherent limitations of conventional laparoscopy. The aim of this study is to identify any short-term advantage of robotic-assisted (RC) over laparoscopic colectomy (LC) using standardized nationwide data.
Methods: Patients from the American College of Surgeons (ACS) National Surgical Quality Improvement Program (NSQIP) 2012-2014 datasets who underwent elective LC or RC were compared for patient demographics, comorbidity, diagnosis, extent of colon resection, operative duration, and conversion rates.
Background: This study aims to report trends in healthcare resource utilization and costs after colorectal surgery in the US.
Methods: From all-payer inpatient data, patients who were discharged after elective colorectal procedures (2002-2011) were identified. Trends in postoperative hospital stay, costs and post-acute care were evaluated.
Background: Factors associated with readmission stratified by the day of postdischarge rehospitalization after colorectal surgery have not been characterized previously.
Objective: The purpose of this study was to identify factors leading to readmission on a day-to-day basis after discharge from colorectal surgery.
Design: This was a retrospective analysis of patients readmitted within 30-days after colorectal surgery.