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Bariatric operations for management of obesity: Indications and preoperative preparation

Robert B Lim, MD, FACS, COL, MC, USA
Section Editor
Daniel Jones, MD
Deputy Editor
Wenliang Chen, MD, PhD


Obesity, defined as a body mass index (BMI) ≥30 kg/m2 [1,2], is a chronic illness identified in children, adolescents, and adults worldwide [3-6]. According to the World Health Organization, worldwide there are approximately 500 million obese adults and 42 million obese children under the age of five years [7]. In the United States, 35 percent of adults (roughly 100 million people) and 17 percent of children are obese [8].

The surgical procedures performed to manage obesity are collectively referred to as metabolic or "bariatric" surgery (from the Greek words "baros" meaning "weight" and "iatrikos" meaning "medicine"). This topic will discuss the indications and contraindications for a bariatric surgical procedure as well as the optimal preoperative preparation in a multidisciplinary setting. A description of the types of bariatric procedures, as well as the complications and outcomes, is found in separate topics.

(See "Bariatric procedures for the management of severe obesity: Descriptions".)

(See "Late complications of bariatric surgical operations".)

(See "Medical outcomes following bariatric surgery".)

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Literature review current through: Nov 2017. | This topic last updated: Feb 15, 2017.
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