Which of the following conditions is characterized by an increased affinity of hemoglobin for oxygen, resulting in a decreased release of oxygen to tissues?

A Polycythemia vera
B Chronic mountain sickness
C Cyanide poisoning
D Alkalosis ✓

Explanation

Alkalosis is a condition characterized by an increased pH of the blood, which increases the affinity of hemoglobin for oxygen and decreases its release to tissues.

Source

Berne and Levy Physiology
Hematology Hematology: Hemoglobin and Oxygen Transport Hematology: Hemoglobin and Oxygen Transport Hard MEDICAL Confidence: medium