BCEN CFRN Practice Question
A 65-year-old patient with a history of congestive heart failure (CHF) is being transported by air to a specialized cardiac center. During the ascent, the patient starts experiencing increased dyspnea and a marked decrease in oxygen saturation. Which physiologic factor related to altitude changes is most likely contributing to the patient's symptoms?
Enhanced vibration during flight
Increased partial pressure of carbon dioxide
Increased noise levels
Reduced partial pressure of oxygen