Which of the following is not a sign of effective NCD?

The correct response highlights that increased respiratory distress is not a sign of effective needle decompression (NCD). Effective NCD is intended to alleviate life-threatening conditions, particularly tension pneumothorax, which can lead to respiratory distress. When the procedure is successful, one expects improvement in the patient’s respiratory status, not a worsening of it.

The return of consciousness, a SPO2 level above 90%, and the return of a radial pulse are all signs indicating that the NCD has been effective, as they reflect improved oxygenation and hemodynamic stability. When a patient starts regaining consciousness, shows a satisfactory oxygen saturation level, and presents a palpable radial pulse, these outcomes demonstrate that the interventions taken to relieve thoracic compression have successfully restored normal physiological functioning. Thus, increased respiratory distress contradicts the expected results of an effective NCD.