Equal aspiration rates in gastrically and transpylorically fed critically ill patients

Objectives: To determine the difference in aspiration rates between gastric ally and transpylorically fed patients in the intensive care unit. Design: A prospective controlled study of critically ill patients randomize d to receive either a gastrically placed feeding tube or a transpylorically placed feeding tube, Setting: University teaching hospital's medical intensive care unit, The st udy was conducted over 14 months. Patients: Fifty-four critically ill subjects (with an overall 40% mortality ) with similar baseline age, severity of illness, and nutritional needs req uiring enteral nutrition, with 51 completing the study. Interventions: All feeds were tagged with technetium-99m radiolabeled sulfu r colloid, and the pulmonary secretions or lungs of each patient were scann ed on a daily basis to determine whether aspiration had occurred. Patients were fed according to their assigned tube placement which was verified dail y by continuous electromyography. Measurements and results: Of 27 gastrically fed patients 2 (7%) had evidenc e of scanned feed in pulmonary secretions or the lung, compared to 3 of 24 (13%) transpylorically fed patients (n.s.). Clinical suspicion of aspiratio n was insensitive and detected only 60% of isotopically documented aspirati ons with a positive predictive value of 27%. Conclusion: There was no difference in aspiration rates between gastrically and transpylorically fed critically ill patients.