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There are currently 27 terms in this directory beginning with the letter H.
Hand Crank
Relating to the hemodialysis machine: Method used to return blood to the patient during a power failure, also know as Emergency Hand Crank, that utilizes the auxiliary blood pump crank handle inserted into the hand crank spindle on the blood pump and the blood is manually returned to the patient.

Headache
Pain in the cranial region that may occur as an isolated and benign symptom or as a manifestation of a wide variety of conditions.

Hemastix
Monitoring strip that identifies the presence of blood.

Hematocrit
A measurement of red cells in the blood, stated as a percentage of red blood cells per total blood volume.

Hematoma
An accumulation of blood that has escaped into the tissues from blood vessels. It is commonly referred to as a bruise and appears "black and blue".

Hemodialysis
A process of removing chemical substances and water from the blood by passing it through an artificial kidney composed of semi-permeable membranes.

Hemoglobin
Protein found in erthrocytes that transports oxygen in the blood.

Hemolysis
The destruction of red blood cells resulting in the liberation of haemoglobin, potassium and other cell contents.

Hemorrhage
Abnormal bleeding, either internal or external.

Heparin
A powerful anticoagulant that blocks/suppresses clotting of the blood. In peritoneal dialysis heparin can be added to the dialysis solution. Heparin inhibits the formation of fibrin and may prevent subsequent adhesion formation.

Heparin Pump
A component of the hemodialysis delivery system that delivers heparin at a prescribed rate.

Hepatitis
An inflammation of the liver, can be of viral or toxic origin.

Homeostasis
State of equilibrium of the internal environment of the body that is maintained by dynamic processes of feedback and regulation.

Hydrostatic Pressure
The pressure exerted by a column of water due to gravity or mechanical pressure.

Hyperkalaemia
Unusually high levels of potassium in the blood.

Hyperparathroidism
Primary hyperparathyroidism is a disorder of the parathyroid glands, also called parathyroids. "Primary" means this disorder originates in the parathyroids: One or more enlarged, overactive parathyroid glands secretes too much parathyroid hormone (PTH). In secondary hyperparathyroidism, a problem such as kidney failure causes the parathyroids to be overactive.

Hypertension
Blood pressure greater than normal.

Hyperthermia
Abnormally high body temperature.

Hypertrophy
An increase in size of an organ or structure that does not involve tumor formation.

Hypervolemia
Abnormally increased volume of circulating blood in the body.

Hypokalaemia
Not enough potassium in the blood.

Hypoperfusion
Decreased blood flow through an organ, as in circulatory shock. If prolonged, it may result in permanent cellular dysfunction and death.

Hypotension
Low blood pressure.

Hypothermia
Abnormally low body temperature.

Hypotonic
A solution with an osmolality or concentration of solutes less than that which it is compared. In dialysis, the fluid of comparison is usually blood.

Hypovolemia
Abnormally decreased volume of circulating blood in the body.

Hypoxia
Clinical manifestation of respiratory distress consisting of a relatively complete absence of oxygen.
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