Heavy bleeding after childbirth (postpartum haemorrhage) Heavy bleeding after childbirth is also known as postpartum haemorrhage (PPH), and is an emergency complication of childbirth. Postpartum haemorrhage is defined as a loss of 500ml or more blood from the genital tract in the first 24 hours after giving birth.
The afferent arterioles are a group of blood vessels that supply the nephrons in many excretory systems.They play an important role in the regulation of blood pressure as a part of the tubuloglomerular feedback mechanism.he afferent arterioles are a group of blood vessels that supply the nephrons in many excretory systems.
Constriction of BOTH Afferent & Efferent Arterioles, with preferential Constriction of the Efferent Arteriole. This results in a massive reduction in RBF/RPF and an increased in GFR. These are active under pathologic conditions (e.g. hemorrhage) NOT physiologic conditions.onstriction of BOTH Afferent & Efferent Arterioles, with preferential Constriction of the Efferent Arteriole. This results in a massive reduction in RBF/RPF and an increased in GFR. These are active under pathologic conditions (e.g. hemorrhage) NOT physiologic conditions.