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.
Afferent Arteriolar Vasoconstriction. Decreases blood flow into the glomerulus, which causes the glomerular-capillary blood pressure to decrease leading to a decrease in the net filtration pressure and a resultant in GFR.ubular Secretion: Selective transfer from peritubular capillary into tubular lumen to be excreted. Second route for entering the renal tubules from blood. Mostly into Distal convoluted tubule & Collecting duct: Excess H+ (pH balance) & excess K+ (membrane potential) (secreted) removed from blood.