Heat syncope

Heat syncope

Infobox_Disease
Name = PAGENAME


Caption =
DiseasesDB =
ICD10 = ICD10|T|67|1|t|66
ICD9 = ICD9|992.1
ICDO =
OMIM =
MedlinePlus =
eMedicineSubj =
eMedicineTopic =
MeshID =

Heat syncope is another stage in the same process as heat stroke, occurs under similar conditions as heat stroke and is not distinguished from the latter by some authorities. The basic symptom of heat syncope is a body temperature above 40°C (104°F) with fainting, or without mental confusion, which does occur in heat stroke. Heat syncope is caused by mild overheating with inadequate water or salt. In young persons, it is far more common than true sunstroke.

Causes

Heat syncope occurs when blood pressure is lowered as the body dilates (widens) capillaries (small blood vessels) in the skin to radiate heat. Also, water is evaporated from the blood, reducing the blood's volume and therefore lowering blood pressure further. The result is less blood to the brain, causing light-headedness and fainting.

Treatment

The basic treatment for heat syncope is like fainting: the patient is positioned in a seating or supine position with legs raised. Water and oral rehydration salt are administered slowly, and the patient is moved to a cooler area.


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Heat syncope — Sudden dizziness or fainting experienced after exercising in the heat. The skin appears pale and sweaty but is generally moist and cool. The pulse may be weakened, and the heart rate is usually rapid. Body temperature is normal …   Medical dictionary

  • Syncope (medicine) — ICD 10 R55 ICD 9 …   Wikipedia

  • Heat wave — A heat wave is a prolonged period of excessively hot weather, which may be accompanied by high humidity. There is no universal definition of a heat wave;cite journal |last=Meehl |first=George A. |coauthors=Tebaldi, Claudia |title=More Intense,… …   Wikipedia

  • Heat illness — Calenture redirects here. For the album by The Triffids, see Calenture (album). Heatstroke and Heatstrokes redirect here. For the film, see Heatstroke (film). For the song by Krokus, see Metal Rendez vous. Sunstroke redirects here. For other uses …   Wikipedia

  • Heat-related illness — A person with symptoms including headache, nausea, and fatigue after exposure to heat probably has some measure of a heat related illness. It is important to recognize the difference between the very serious condition known as heat stroke and… …   Medical dictionary

  • Syncope, heat — Sudden dizziness or fainting experienced after exercising in the heat. The skin appears pale and sweaty but is generally moist and cool. The pulse may be weakened, and the heart rate is usually rapid. Body temperature is normal …   Medical dictionary

  • Wilderness first aid — is the specific discipline of First aid which relates to care in remote areas, where emergency medical services will be difficult to obtain or will take a long time to arrive. Nursing care though not part of normal first aid is part of wilderness …   Wikipedia

  • Vasovagal response — Vasovagal episode Classification and external resources Vagus nerve ICD 10 R55 …   Wikipedia

  • Symptom — For the 1974 horror film, see Symptoms (film). A symptom (from Greek σύμπτωμα, accident, misfortune, that which befalls [1], from συμπίπτω, I befall , from συν together, with + πίπτω, I fall ) is a departure from normal function or feeling which… …   Wikipedia

  • Medical sign — A medical sign is an objective[1] indication of some medical fact or characteristic that may be detected by a physician during a physical examination of a patient.[2] Signs may have no meaning for, and can even go unnoticed by, the patient, but… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”