Author/Editor		Potočnik, Nejka
Title		Spremembe dihanja pri nosečnici
Translated title		The respirational changes in pregnancy
Type		članek
Source		In: Potočnik MM, editor. Respiracijska in kardiovaskularna fizioterapija. Gradivo 22. podiplomskega strokovnega seminarja; 2003 nov; Ljubljana. Ljubljana: Društvo fizioterapevtov Slovenije,
Publication year		2003
Volume		str. 9-20
Language		slo
Abstract		Pregnancy is associated with profound respiratory changes: alveolar ventilation increases by 30-40%, largely as a result of the increased tidal volume, vital capacity and residual volume are increased, too, while the breathing frequency and FEV, remain unchanged. To allow effective gaseous exchange across the placenta the maternal pco2 must be lower than the fetal pco2 and so the maternal respiratory center is reset, probably as an effect of progesterone. Because of the increased resting oxygen requirements and the increased work of breathing there is decreased availability for the performance of aerobic exercise during pregnancy. Thus maximum exercise performance is decreased.
Descriptors		RESPIRATION RESPIRATORY MECHANICS FORCED EXPIRATORY FLOW RATES PULMONARY GAS EXCHANGE EXERCISE PREGNANCY