H

Heart Rate
Is your pulse or reading of how many times your heart beats per minute. You can count your heart rate by locating your radial pulse on the inside of your wrist, just below your thumb. Lightly feel the pulse (pressing too hard may dampen it) and count the beats for 30 seconds and then double the number to find your heart rate. You may find it easier to use your carotid pulse, located at the top of your neck underneath your jaw.  Elevated heart rate results from exercise (often athletes and physical therapy regimens will seek to target a given heart rate for a certain period of time).  High elevated heart rate from normal activities, such as walking, climbing stairs, slight physical exertion may indicate heart, circulatory or pulmonary problems, and a doctor should be consulted. Sometimes this may colloquially or commonly be called a "pounding heart", where the individual reports actually feeling the heart beat inside the chest.

High frequency ventilation
The use of small tidal volumes at fast ventilatory rates (180-900 breaths per minute) to reduce the amount of damage that is associated with conventional ventilators that deliver larger tidal volumes at lower frequencies.

High pressure ventilation
Mechanical ventilation therapy that is administered at a high pressure and may cause lung damage.

Hyper
Prefix meaning excessive.

Hyperalgesia
Excessive sensibility to pain.

Hypercapnia
Excessive CO2 in the blood.

Hyperesthesia
Excessive sensitiveness of a part of the body.

Hyperpyrexia
Body temperature above 105 degrees Fahrenheit.

Hypersecretion
Excessive secretion.

Hypertension
Elevated blood pressure above 140/90. Your physician worries about smaller changes in the bottom number, since this means your heart does not have a chance to relax. It is very easy to ignore high blood pressure since it usually produces no symptoms. If gone untreated, hypertension can result in heart attack, stroke, vision loss and kidney problems. A person may be at high risk if high blood pressure runs in the family, is Africian American, is overweight, on medications that may have the side effect of raising blood pressure, eats too much salt and/or is in stressful situations. A physician may order medication to lower the pressure which is very important to take as directed!   See pulmonary hypertension.

Hyperthermia
Very high (excessive) body temperature.

Hyperventilation
Excessive rapid breathing.

Hypo
Prefix meaning decreased or diminished.

Hypocapnia
Decreased CO2 in the blood, can be produced by hyperventilation.

Hypodermic
Below the skin, subcutaneous.

Hypoesthesia
Diminished sensitiveness of a part of the body.

Hypofunction
Diminished function.

Hyposecretion
Deficient (decreased or diminished) secretion.

Hypothermia
Below normal body temperature.

Hypotonic
Lacking in tone, tension, or strength.

Hypoxemia
Diminished amount (reduced saturation) of oxygen in arterial blood (PaO2/FiO2 ratio less than 200 mm Hg); hypoxic hypoxemia–interference with pulmonary oxygenation; stagnant hypoxia–a reduction in blood flow, as seen in the finger nails in surgical shock or in cold weather.


 

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