Peripheral cyanosis is sometimes difficult to detect in people of dark skin

All of the following are symptoms of improper cerebral oxygenation during hyperventilation EXCEPT:

A. impaired problem-solving abilities. B. dizziness. C. Chvostek's sign. D. impaired vision.

Nitroglycerin's action peaks at about ____ minutes.

A. one to three B. three C. five D. six to seven