Insertion of a nasogastric (NG) tube is widely used for gastrointestinal decompression or for feeding in critically ill patients. It is not uncommon to experience difficulties in inserting the NG tube under certain circumstances during this relatively simple procedure, particularly when an endotracheal (ET) tube is already in place. A frequent problem is failure to get the NG tube into the esophagus. Various tactics have been described to facilitate the procedure. We present a technique using a flexible fiberoptic bronchoscope (FFB) and guide wire for inserting the NG tube into the esophagus under direct visualization. When all other efforts fail, the FFB may provide a recourse for resolving the problem.
MethodExplanation of the procedure may relieve anxiety and win cooperation of the patient. The inferior meatus of the nasal cavity is first anesthetized with a mixture of 2% viscous lidocaine and 5% cocaine on a cotton applicator. The well lubricated FFB is then introduced into the oropharynx along the nasaI floor Director, Critical Care Services.
904ANESTHESIA AND ANALGESIA VoI 60, No 12. December 1981 as in routine bronchoscopy. The hypopharynx is examined and anesthetized with 2 ml of 4% lidocaine. The tip of the FFB is then carefully directed into the slit between the interarytenoid glottis and posterior wall of the pharynx under direct vision.With mild steady pressure the FFB is gently advanced; a sudden decrease of resistance can be felt as it enters the esophagus. The FFB (Olympus, BF type IT, diameter 5.9 mm, length 56 cm, suction channel 2.6 mm) is then advanced slowly under intermittent visualization of the esophageal lumen until the whole length of the FFB is passed. The position of the tip can be ensured by auscultation when 10 to 20 ml of air is injected through the suction channel. A guide wire (Amplatz heparin coated, Cook Inc, type TSF, diameter 35 mm i.d., length 145 cm) is then threaded through the suction channel into the stomach (Figure).The FFB is subsequently withdrawn and the wire left in place. An appropriately sized NG tube, well lubricated, can then be passed over the guide wire into the stomach. The position of the NG tube can be rechecked by routine aspiration, air injection, and x-ray examination. Passing the entire length of the FFB, as well as the guide wire into the stomach, ensures a smooth insertion of the NG tube. Any possible difficulty in passing the esophagus due to pliability of the NG tube will be eliminated.
Case Reports Case 1A 32-year-old man sustained a cervical spine (C3-4) fracture after an automobile accident. He had an endotracheal tube in place and was being mechanically ventilated because of quadriplegia and respiratory failure. Crutchfield tong traction was applied. Placement of a NG tube was attempted many times; various methods, including stiffening the tube with ice water, using a guide wire, and blind insertion of an endotracheal tube as an introducer, failed to place anything in the esophagus. The FFB technique was used with success. Direct visualization of ...