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There are multiple causes of pain. Endometriosis lesions react to hormonal stimulation and may "bleed" during menstruation. The blood accumulates locally if it is not cleared shortly by the immune, circulatory, and lymphatic systems.
Regional anaesthesia during caesarean section is different from the analgesia (pain relief) used in labor and vaginal delivery. [84] [85] [86] The pain that is experienced because of surgery is greater than that of labor and therefore requires a more intense nerve block. General anesthesia may be necessary because of specific risks to mother or ...
The cold water can also cause heart attack due to vasoconstriction; [11] the heart has to work harder to pump the same volume of blood throughout the body, and for people with heart disease, this additional workload can cause the heart to go into arrest. A person who survives the initial minute after falling into cold water can survive for at ...