Later Development, Develop. Physiol., Dr. D. Penney




Table 3.01a - Some Maternal Changes during Pregnancy.



incr. blood volume
incr. erythrocyte mass
incr. plasma volume
incr. cardiac output & incr. cardiac output
incr. heart rate
incr. stroke volume
incr./decr. in systemic BP
decr. diastolic BP
incr. pulse pressure
decr. systemic vascular resistance
(fetal "arteriovenous anastamosis")
decr. pulm. vascular resistance
decr. colloid osmotic poressure
decr. hematocrit
decr. hemoglobin conc.
incr. erythropoietin
incr. erythrocyte production
incr. Na retention -->
incr. water retention
incr. renin activity -->
incr. aldosterone secretion
incr. maternal body wt.
incr. oxygen consumption
redistrubtion of blood flow
incr. uterine blood flow
incr. heart contractility / iontropicity
incr. heart oxygen requirement
incr. mammary gland blood flow
incr. renal blood flow
incr. left atrial diameter
appearance of venous hum
appearance of systolic murmur
incr. episodes of arrhythmia




Return to Page 2