Professional
Technical
In the Industry Vocabulary Test
hypercapnia
Elevated levels of carbon dioxide in the blood, typically above 45 mmHg.
Full Definition
Hypercapnia, also known as hypercarbia, is a condition characterized by abnormally high levels of carbon dioxide (CO2) in the arterial blood, generally defined as a PaCO2 greater than 45 mmHg. This condition can result from hypoventilation, ventilation-perfusion mismatch, or increased CO2 production. Clinical manifestations may include dyspnea, confusion, drowsiness, and in severe cases, respiratory acidosis. Respiratory therapists manage hypercapnia through ventilatory support, airway clearance techniques, and optimization of ventilator settings to improve CO2 elimination.
Usage
Usage note: Preferred term over 'hypercarbia' in most clinical contexts.
In Context
- "The arterial blood gas revealed severe hypercapnia with a PaCO2 of 65 mmHg." — Laboratory results report
- "Chronic hypercapnia in COPD patients may lead to compensated respiratory acidosis." — Pathophysiology textbook
Also known as
hypercarbia
CO2 retention
Contrasted with
hypocapnia
Don't confuse with
hypoxemia
hyperoxia