Severe electrolyte abnormalities in a pregnant patient with a jejunoileal bypass.

A pregnant patient with a jejunoileal bypass developed hypokalemic paralysis and severe hypocalcemia and hypomagnesemia. She also had hypokalemic myopathy with elevation of muscle enzymes, which was corrected by potassium administration. This case emphasizes the severe metabolic complications that may be encountered during pregnancy following jejunoileal bypass.