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Related to hemorrhage: postpartum hemorrhage, Intracerebral hemorrhage, Brain hemorrhage


(hĕm`ərĭj), escape of blood from the circulation (arteries, veins, capillaries) to the internal or external tissues. The term is usually applied to a loss of blood that is copious enough to threaten health or life. Slow bleeding may lead to anemiaanemia
, condition in which the concentration of hemoglobin in the circulating blood is below normal. Such a condition is caused by a deficient number of erythrocytes (red blood cells), an abnormally low level of hemoglobin in the individual cells, or both these conditions
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, while the sudden loss of a large amount of blood may cause shockshock,
any condition in which the circulatory system is unable to provide adequate circulation to the body tissues, also called circulatory failure or circulatory collapse. Shock results in the slowing of vital functions and in severe cases, if untreated, in death.
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. Hemorrhage from a cerebral artery can be fatal because of interference with brain function. Many diseases and disorders (e.g., hemophilia, hemorrhagic fevers, hemorrhoids, peptic ulcer, scurvy, tuberculosis, and typhoid fever) as well as childbirth and many injuries can give rise to hemorrhage. Internal hemorrhage may require surgical intervention. See first aidfirst aid,
immediate and temporary treatment of a victim of sudden illness or injury while awaiting the arrival of medical aid. Proper early measures may be instrumental in saving life and ensuring a better and more rapid recovery.
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escape of blood from blood vessels that have been injured as a result of trauma or vascular disease.

Hemorrhages may be arterial (scarlet blood spurts like a fountain), venous (a flow of dark blood), capillary, or mixed. The intensity of bleeding depends on the size of the injured vessel and the condition of its wall. Blood may flow to the outside, into the lumen or body of an organ (stomach, intestine, brain), or into a cavity (abdominal, pleural). Bleeding is accompanied by pallor of the skin and mucosa, dizziness, weakness, dyspnea, thirst, a drop in arterial pressure, and a weak and rapid pulse. A large and rapid blood loss (25 percent of the blood volume or 4—4.5 percent of the body weight) produces loss of consciousness and may result in death. Persons weakened by a disease can be severely affected by even a small blood loss. In persons with atherosclerosis of the blood vessels, bleeding continues longer and is more difficult to stop. Bleeding in hemophilia patients, which arises when there is the slightest trauma, is extremely persistent.

Measures for stopping bleeding depend on its cause and source. Arrest of bleeding may be temporary or permanent. For temporarily stopping bleeding, a tourniquet, or pressure bandage, is applied to the extremities; vasoconstrictors, ice, or hemo-static sponges (on wounds) are also used. These measures often lead to complete cessation of bleeding; if bleeding does not stop it becomes necessary to resort to surgical methods (ligation of the vessel, suturing, removal of the injured or affected organ or of part of it) to achieve permanent cessation of bleeding. Blood transfusion or transfusion of blood substitutes that increase blood coagulation is a necessary part of treatment to control hemorrhage.



The escape of blood from the vascular system.


(US), hemorrhage
profuse bleeding from ruptured blood vessels
References in periodicals archive ?
Most of the patients with amiodarone-induced alveolar hemorrhage have an acute onset of cough, shortness of breath, and fever, and the abrupt worsening of dyspnea generally prompts medical investigation.
Although MPA is a recognized cause of diffuse alveolar hemorrhage, alveolar hemorrhage is relatively rare as a presenting feature.
The hemorrhage safety bundle calls on hospitals to implement 13 steps focused on readiness, recognition and prevention, response, and reporting and systems learning.
Complete Pipeline intelligence and complete understanding over therapeutics development for Brain Hemorrhage
Patients with isolated perimesencephalic hemorrhage almost always have no evidence of aneurysm on angiography, fare much better clinically than patients with aneurysmal hemorrhage, and are not at risk for recurrent hemorrhage.
Hepatocellular carcinoma complicated by gastrointestinal hemorrhage caused by direct tumor invasion of stomach.
Based on these two well documented large meta-analyses and our literature search, only 13 cases have been reported where the etiological basis of the spontaneous renal hemorrhage remained undetermined.
Biomarkers of postpartum hemorrhage that could be used early in pregnancy would allow women to make informed decisions about their choice of birthing site and medical care based on their risk," Abrams said.
Traumatic hemorrhage is a common, well recognized, and lethal problem in civilian and military settings for which numerous countermeasures have been recommended, and a few of which are evidenced to be lifesaving.
Conclusion: Advanced age, atherosclerosis, male gender and NSAID administration (particularly aspirin) are the major risk factors of upper Gl hemorrhage in patients with gastric and/or duodenal ulcer.
Subhyaloid hemorrhages are reported in cerebral malaria in children (3,10), but to the best of our knowledge, bilateral premacular subhyaloid hemorrhage in adults with cerebral malaria have not been reported so far.