The respiratory system undegoes immense changes in pregnancy in order to cope with demands of the developing fetus and labour. Which of the following parameters does not change?
Answer: arterial pH
Explanation
Arterial pH remains relatively stable during pregnancy
Reflecting the effective regulation of acid-base balance by the body's homeostatic mechanisms.
During pregnancy, the respiratory system changes to accommodate the needs of the fetus while arterial pH typically remains stable.
These include:
- increased oxygen consumption
- alterations in lung volumes
- adjustments in respiratory mechanics
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