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hemorrhage (hem´o-rij)

1. An escape of blood through ruptured or unruptured vessel walls. 2. To bleed. [G. haimorrhagia, fr. haima, blood, + rhegnymi, to burst forth]
brainstem h. h. into the pons or mesencephalon, often secondary to brainstem distortion by transtentorial herniations due to rapidly expanding intracranial lesions.
cerebral h. h. into the substance of the cerebrum, usually in the region of the internal capsule by the rupture of the lenticulostriate artery.hematencephalon, intracerebral h;
concealed h. internal h
Duret's h. small brainstem h. resulting from brainstem distortion secondary to transtentorial herniation.
extradural h. an accumulation of blood between the skull and the dura mater.epidural hematoma;
gastric h. gastrorrhagia
intermediate h. h. that is recurrent.
internal h. bleeding into organs or cavities of the body.concealed h;
intracerebral h. cerebral h
intracranial h. escape of blood within the cranium due to loss of integrity of vascular channels, frequently forming hematoma.
intrapartum h. h. occurring in the course of normal labor and delivery.
intraventricular h. extravasation of blood into the ventricular system of the brain.
nasal h. epistaxis
parenchymatous h. bleeding into the substance of an organ.
h. per rhex´is h. due to the rupture of a blood vessel.
petechial h. capillary h. into the skin that forms petechiae.punctate h;
pontine h. h. occurring in the substance of the pons, typically in hypertensive patients.
postpartum h. h. from the birth canal in excess of 500 ml after a vaginal delivery or 1000 ml after a cesarean delivery during the first 24 hours after birth.
primary h. h. immediately after an injury or operation, as distinguished from intermediate or secondary h.
punctate h. petechial h
renal h. gross hematuria, the source of which is in the kidney.
secondary h. h. at an interval after an injury or an operation.
serous h. obsolete term for a profuse transudation of plasma through the walls of the capillaries.
splinter h.'s multiple tiny longitudinal subungual h.'s typically seen in but not diagnostic of bacterial endocarditis, trichinelliasis, etc.
subarachnoid h. extravasation of blood into the subarachnoid space, often due to aneurysm rupture and usually spreading throughout the cerebrospinal fluid pathways.
subdural h. extravasation of blood between the dural and arachnoidal membranes; acute and chronic forms occur; chronic hematomas may become encapsulated by neomembranes.subdural hematoma;
subgaleal h. collection of blood beneath the galea aponeurotica.
syringomyelic h. h. into a syringomyelic cavity.
unavoidable h. obsolete term for h. occurring during labor in cases of placenta previa, as distinguished from accidental h.


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