Obstetric Week

SS_OB 1.4

Describe the utero-placental circulation and the principles of placental physiology as related to placental gas exchange and regulation of placental blood flow.

Pregnant women have normal peripheral sympathetic nervous system activity. TRUE/FALSE

Uterine blood flow in the non pregnant state is 700mL/min. TRUE/FALSE

Increased maternal systemic resistance can lead to increased placental blood flow at term. TRUE/FALSE

A “normal” blood pressure reading in a supine (term) pregnant woman’s arm is a reliable indicator of uterine perfusion pressure. TRUE/FALSE

If there is no maternal hypotension then neuraxial blockade does not alter uterine blood flow. TRUE/FALSE

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