Transient paralysis of the diaphragm following radical neck surgery.

We have observed transient diaphragmatic paralysis with high alveolar to arterial oxygen partial pressure difference following radical neck surgery. Patients required supplemental oxygen for maintenance of arterial oxygenation. Patients following radical and neck surgery should be followed with chest roentgenograph to exclude pneumothorax and diaphragmatic paralysis and arterial blood gases in the immediate postoperative period.