Hi:
"What can it be that causes these spikes to occur from nowhere?"
The complex human body is usually able to keep blood pressure (BP) within safe/acceptable limits, but sometimes changes in lifestyle, health, stress/stressful situations, anxiety, side effects from prescription drugs, or changes in metabolism, make this difficult. This can cause the BP to become consistently higher or lower than normal, or spike up and then drop down.
Compensatory mechanisms that control BP involves changing the diameter of veins and small arteries (arterioles), the amount of blood pumped out from the heart per minute (cardiac output), and the volume of blood in the vessels.
"Is 190/80 considered a risk for heart attack?"Normal resting BP in adults is under 120/80 with 115/75 or 110/70 considered as being optimal/ideal. Prehypertension is defined as systolic of 120-139 mmHg and diastolic of 80-89 mmHg. Stage 1 is systolic of 140 to 159 and diastolic of 90 to 99. Stage II is systolic of 160 to 179 and diastolic of 100 to 109. Stage III is systolic greater than 180 and diastolic greater than 110. Stage IV is systolic of 210 and greater, and diastolic of 120 and greater.
Noteworthy, temporary increases or high spikes in BP, which was at one time was thought as being relatively harmless, can in fact be deleterious (may/can even cause a hypertensive brain attack) in some individuals, especially in those who already have hypertension or weakened arteries in the brain.
Health dangers from blood pressure vary among different age groups and depending on whether systolic or diastolic pressure (or both) is elevated, and for
how long.
Elevated blood pressure, isolated diastolic hypertension, isolated systolic hypertension and diastolic/systolic hypertension, increases the risk of cardiovascular disease, cerebrovascular disease, and renovascular disease.
Pulse pressure is also important, which is the difference between systolic (heart's pumping phase) and diastolic (heart's resting phase). Usually, the resting (in sitting position) pulse pressure in healthy individuals is 40 mmHg, give or take a little. A consistantly narrow (say 20 or 25 mmHg or less) or wide (say 60 or 65 or more) pulse pressure is not good.
ALWAYS be
proactive in your health care and treatment. Sometimes this requires being assertive.
Most important,
communicate/interact well with your doctor(s). Best of luck down the road of life.
Take care,
CardioStar*
WebMD member (since 8/99)
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Quote! "Be a
questioning patient. Talk to your doctor and ask questions. Studies show that patients who
ask the most questions, and are most assertive, get the best results. Be vigilant and speak up!"
- Charles Inlander, People's Medical Society
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It's your future......be there.
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