Travel Reference
In-Depth Information
HAPE:
High-altitude pulmonary edema.
Heart failure:
Inability of the heart to pump out all the blood returned, which causes fluid
to pool (edema) in the peripheral tissues or lungs, depending upon which ventricle is
damaged.
Heart valves:
Valves that maintain the forward flow of blood within the heart.
Heimlich maneuver:
A maneuver for dislodging obstructing material, usually aspirated
food, from the larynx or trachea.
Hematoma:
A mass formed by clotted blood within tissue.
Hematuria:
Blood (intact red blood cells) in the urine.
Hemoglobinuria:
Hemoglobin in the urine, a reflection of disorders distinctly different
from those that cause hematuria.
Hemorrhoids:
Enlarged veins beneath the skin of the anus.
Hemothorax:
Blood in the chest.
High-altitude cerebral edema:
A high-altitude illness caused by swelling (edema) of the
brain.
High-altitude pulmonary edema:
A high-altitude illness characterized by the accumula-
tion of fluid (edema) in the lungs.
Hydrated:
Containing water. (Normally hydrated means containing a normal amount of
water.)
Hyperoxia:
A higher-than-normal blood oxygen.
Hypertension:
High blood pressure.
Hyperthermia:
A higher-than-normal body temperature.
Hypoglycemia:
A lower-than-normal concentration of glucose in the blood.
Hypothermia:
A lower-than-normal body temperature.
Hypoxemia:
A lower-than-normal quantity of oxygen in arterial blood.
Hypoxemic:
Having a lower-than-normal quantity of oxygen in arterial blood.
Hypoxia:
Presence of a lower-than-normal or lower-than-sea-level quantity of oxygen or
lower-than-normal availability of oxygen; can refer to the entire body, body tissues,
or the atmosphere.
Hypoxic:
Having a lower-than-normal or lower-than-sea-level quantity of oxygen.
Ileus:
Intestinal paralysis procucing obstruction; most often caused by peritonitis.
Immunization:
Production of an immune condition by administration of an agent that
stimulates a protective response.
Incubation period:
Period of time between infection by microorganisms and the onset of
detectable signs or symptoms of the disease.
Infarct:
Death of tissue caused by arterial obstruction, or dead tissue resulting from arteri-
al obstruction.
Intramuscular:
Within muscle; the site for injection of a medication.
Intravenous:
Within a vein; the site for injection of a medication or fluids.
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