An episiotomy is a surgical incision used to enlarge the vaginal opening to help deliver a baby. An episiotomy may be needed for any of the following reasons: 1  Birth is imminent and the perineum hasnât had time to stretch slowly. 2  The babyâs head is too large for the vaginal opening. 3  The baby is in distress. 4  The mother needs a forcep or vacuum assisted delivery.
A hypersensitive immune system is one which overreacts to a stimulus. A normal immune system reacts when the body identifies a foreign protein such as proteins on the outside of bacteria.This foreign material which invokes the immune response is called an antigen.mail Article. A hypersensitive immune system is one which overreacts to a stimulus. A normal immune system reacts when the body identifies a foreign protein such as proteins on the outside of bacteria. This foreign material which invokes the immune response is called an antigen.
Carotid sinus hypersensitivity (CSH) is an exaggerated response to carotid sinus baroreceptor stimulation. It results in dizziness or syncope from transient diminished cerebral perfusion. Although baroreceptor function usually diminishes with age, some people experience hypersensitive carotid baroreflexes.