Key messages

• In patients with severe abnormalities of the control system of breathing and of gas exchange, hypercapnia may result from relatively small increases in metabolic rate.

• The respiratory centers may be depressed directly or indirectly. In both instances, the increase in PaCO2 is due to decreased output of the respiratory centers.

• Causes of reduced respiratory muscle strength include neuromuscular disease, malnutrition, electrolyte abnormality, steroids, humoral mediators, thoracic deformity, deconditioning of respiratory muscles, peripheral fatigue, pulmonary hyperinflation, and rapid shallow breathing.

Sleep Apnea

Sleep Apnea

Have You Been Told Over And Over Again That You Snore A Lot, But You Choose To Ignore It? Have you been experiencing lack of sleep at night and find yourself waking up in the wee hours of the morning to find yourself gasping for air?

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