DeMaria EJ, Portenier D, Wolfe L. Obesity surgery mortality risk score: proposal for a clinically useful score to predict mortality risk in patients undergoing gastric bypass. Surg Obes Relat Dis. 2007;3(2):134-140.

García-García ML, Martín-Lorenzo JG, Lirón-Ruiz R, Torralba-Martínez JA, García-López JA, Aguayo-Albasini JL. Failure of the Obesity Surgery Mortality Risk Score (OS-MRS) to Predict Postoperative Complications After Bariatric Surgery. A Single-Center Series and Systematic Review. Obes Surg. 2017;27(6):1423-1429.

Efthimiou E, Court O, Sampalis J, Christou N. Validation of Obesity Surgery Mortality Risk Score in patients undergoing gastric bypass in a Canadian center. Surg Obes Relat Dis. 2009;5(6):643-647.

Thomas H, Agrawal S. Systematic review of obesity surgery mortality risk score--preoperative risk stratification in bariatric surgery. Obes Surg. 2012;22(7):1135-1140.

DeMaria EJ, Murr M, Byrne TK, et al. Validation of the obesity surgery mortality risk score in a multicenter study proves it stratifies mortality risk in patients undergoing gastric bypass for morbid obesity. Ann Surg. 2007;246(4):578-582; discussion 583-584.

Dr. Eric J. DeMaria

Obesity Surgery Mortality Risk Score (OS-MRS)

Predicts mortality risk in patients undergoing gastric bypass surgery.

OS-MRS

Lindsay Jones, MD, is a Clinical Content Manager at MDCalc. Board-certified in internal medicine, Dr. Jones earned her MD from Creighton University School of Medicine and completed her residency at Brown University. She has developed a diverse career in medicine, including extensive experience as a locum tenens hospitalist at multiple hospitals across California and Washington. In addition to her clinical work, Dr. Jones has significant expertise in medical education, having served as a medical writer and editor for two online medical education platforms, where she led teams in various content creation projects. She remains passionate about producing accurate and impactful clinical content, a commitment she continues to uphold in her role at MDCalc.

Lindsay Jones, MD

The Obesity Surgery Mortality Risk Score evaluates mortality risk in patients undergoing gastric bypass surgery.

Obesity Surgery Mortality Risk Score (OS-MRS) Calculator

Predicts risk of acute renal failure (ARF) requiring dialysis after cardiac surgery.

Thakar Score

Predicts 30-day mortality after elective or emergency cardiac surgery.

ACEF II Risk Score

Predicts postoperative pancreatic fistula, based on intraoperative findings, after pancreatic resection.

Pancreatic Fistula Risk Score

The American Academy of Pediatrics (AAP) focuses on the health, safety, and well-being of infants, children, and young adults. With about 67,000 members, including pediatricians, medical subspecialists, and surgical specialists, the AAP supports optimal care. Over 45,000 members are board-certified Fellows of the AAP (FAAP). Its mission is to promote children's health and well-being while supporting members' professional needs.

American Academy of Pediatrics (AAP)

The American Association for Physician Leadership&reg; (AAPL) is the world&rsquo;s oldest and largest professional association dedicated solely to maximizing physician leadership.&nbsp;From the moment physicians begin their leadership journey through the time they are seasoned leaders, AAPL provides education and training, resources and tools, and content and experiences needed to close gaps between hands-on clinical care, organization system improvements and optimized business outcomes.

American Association for Physician Leadership (AAPL)

American Association for the Study of Liver Diseases

The American College of Emergency Physicians (ACEP) represents more than 38,000 emergency physicians, emergency medicine residents and medical students. ACEP promotes the highest quality of emergency care and is the leading advocate for emergency physicians and their patients, and the public. Members may earn up to 850 continuing medical education hours every year through ACEP&rsquo;s robust catalog of peer-reviewed publications and on-demand courses presented by world-renowned emergency medicine experts.

American College Of Emergency Physicians

The American College of Gastroenterology (ACG) supports clinicians in delivering high-quality, evidence-based care to gastroenterology patients. Its mission is to advance care for those with gastrointestinal disorders through excellence, innovation, and advocacy. ACG provides members with up-to-date scientific information through annual meetings, the American Journal of Gastroenterology, training courses, and research grants, focusing on digestive health and GI disorder treatments.

American College of Gastroenterology

American College of Rheumatology

The American Gastroenterological Association (AGA), founded in 1897, provides leadership and education to over 16,000 members worldwide, all dedicated to advancing gastroenterology. The AGA&rsquo;s mission is to empower clinicians and researchers to improve digestive health through clinical guidance, practice resources, and peer-reviewed research. Key journals include Gastroenterology, Clinical Gastroenterology and Hepatology, Cellular and Molecular Gastroenterology and Hepatology, and others.

American Gastroenterological Association

American Heart Association

American Urological Association

EB Medicine is the premier provider of evidence-based clinical content and CME resources for emergency medicine practitioners.

EB Medicine

MDCalc Blog

MDCalc CME

Postgraduate Institute for Medicine

The Rome Foundation is a nonprofit organization dedicated to advancing the diagnosis and treatment of Disorders of Gut-Brain Interaction (DGBI), also known as functional gastrointestinal disorders. Its mission is to improve the lives of people with DGBI. For over 30 years, the Rome Foundation has worked with scientists and clinicians worldwide to classify and assess GI function and dysfunction, creating symptom-based criteria used in clinical trials and daily practice to guide diagnosis and treatment.

The ROME Foundation

Listen to the VACO co-creators break down how to use VACO\, what it does\, and what it doesn’t.