Changes in the respiratory system in pregnancy;
Correct Answer: Residual volume Is decreased
Description: Anatomical changes:The lower ribs flare out,the subcoastal angles increases from 68 to 103 degree,transverse diameter of chest increases by 2 cm and the diaphragm rises about 4cm in pregnancy. Functional changes:Increase in ventilation in pregnancy is achieved by an increase in tidal volume by 40%.Minute ventilatory volume also increases.There is no change in vital capacity.The functional residual capacity and residual volume are decreased due to elevated diaphragm. TEXT BOOK OF OBSTETRICS,Sheila Balakrishnan,2nd edition,page no.80
Category:
Gynaecology & Obstetrics
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