A roentgenological study of the small intestine after different intestinal bypass operations for treatment of morbid obesity.

Twenty-nine patients who had undergone four different types of jejunoileal bypass for obesity were examined roentgenologically after ingestion of barium contrast. Functional intestinal length, blind loop reflux and speed of contrast through the small intestine were recorded. Weight loss was not correlated to any of the mentioned parameters or to operative method. Length of functioning intestine increased and speed of contrast decreased with time after surgery.