MRCP UK EXAMINATIONS

Detailed explanation-1: -Pseudo-hypoxemia is diagnosed if the measured (in vitro) pO2(a) indicates hypoxemia, but true (in vivo) pO2(a) is normal; in essence falsely reduced pO2(a). If not recognized, pseudo-hypoxemia can result in needless patient investigation and intervention.

Detailed explanation-2: -Hypoxia is a state in which oxygen is not available in sufficient amounts at the tissue level to maintain adequate homeostasis; this can result from inadequate oxygen delivery to the tissues either due to low blood supply or low oxygen content in the blood (hypoxemia).

Detailed explanation-3: -This is normally caused by hypoventilation of the body which leads to CO2 retention. Hypercapnia is the elevation in the partial pressure of carbon dioxide (PaCO2) above 45 mm Hg on Arterial Blood Gas readings. Hypercapnia can eventually cause hypoxaemia due to reduced respiratory drive.

Detailed explanation-4: -Hypoxia is low levels of oxygen in your body tissues. It causes symptoms like confusion, restlessness, difficulty breathing, rapid heart rate, and bluish skin. Many chronic heart and lung conditions can put you at risk for hypoxia.