Characteristic of type-II respiratory failure is: September 2010
Correct Answer: Low PaO2 and high PaCO2
Description: Ans. D: Low PaO2 and high PaCO2 Type II Respiratory Failure (Ventilatory Failure: Aerial Hypercapnia): Paial pressure of CO2 in the aerial blood reflects the efficiency of ventilatory mechanism that clears (washes out) CO2 produced during tissue metabolism. Type II failure can be caused by any disorder that decreases central respiratory drive, interferes with the transmission of signals from the central nervous system, or impedes the ability of respiratory muscles to expand the lungs and chest wall. Type II failure is characterized by an abnormal increase in the paial pressure of CO2 in the aerial blood (PaCO2 > 46 mm Hg), and is accompanied by simultaneous fall in PAO2 and Pa02, therefore PAO2 - Pa02 difference remains unchanged.
Category:
Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now