Heart
The Heart
The heart enlarges by about 12% between early and late pregnancy.Distension of the heart chambers is due partly to increasing my-metrical hypertrophy ,but mostly to increased diastolic filling in parallel with the increasing blood volume.Echo cardiology studies of cardiac enlargement in pregnancy show that wall thickness increases very little .cardiac enlargement does not appears to be associated with reduced my cardiac efficiency as proportion of blood ejected during systole increases during early pregnancy.
By mid-pregnancy more than 90% of women develop an ejection systolic murmur,which lasts until first week postpartum.If unaccompanied by any other abnormalities it reflects the increased stroke output .Twenty percent develop a transient diastolic murmur and 10% develop continuous murmurs,heard over the base of the heart,owing to increased mammary blood flow.
The Heart
The heart enlarges by about 12% between early and late pregnancy.Distension of the heart chambers is due partly to increasing my-metrical hypertrophy ,but mostly to increased diastolic filling in parallel with the increasing blood volume.Echo cardiology studies of cardiac enlargement in pregnancy show that wall thickness increases very little .cardiac enlargement does not appears to be associated with reduced my cardiac efficiency as proportion of blood ejected during systole increases during early pregnancy.
By mid-pregnancy more than 90% of women develop an ejection systolic murmur,which lasts until first week postpartum.If unaccompanied by any other abnormalities it reflects the increased stroke output .Twenty percent develop a transient diastolic murmur and 10% develop continuous murmurs,heard over the base of the heart,owing to increased mammary blood flow
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RoseNinja | Sep 19, 2009 | Reply
It is must to know about heart