Hi:
"I'm suppose to have a surgery (general anesthesia) and I'm VERY afraid that I can die because of all this."
Any concerns or worries obviously must be discussed in advance with the anesthesiologist and the doctor performing the surgery.
"I bought a machine to measure blood pressure and sometimes when I'm very relaxed, it can be 80/50."
Normal resting blood pressure (BP) in adults is under 120/80 with 115/75 or 110/70 considered as being optimal/ideal. Under 90/60 is defined as low blood pressure (hypotension), which is ok, that is, unless it causes concerning symptoms such as lightheadedness or dizziness,weakness, confusion or syncope (a temporary loss of consciousness, includes passing out and fainting)
As reported, 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. Sometimes an imbalance somewhere within the body's precise regulating systems can occur.
"I've seen an electrophysiologist that said that I probably have baroreceptor dysfunctions."
Receptors (termed baroceptors) monitor the BP and make changes to help maintain a fairly constant BP, in particular, when an individual changes postions (lying down, sitting up, standing up, bending over) or activities. The baroceptors become less sensitive with aging, and though uncommon, when age is not an issue, can become damaged or dysfunctional.
"Over the years I develop many problems. Very very low blood pressure. Tachycardia (130 BPM approx) sometimes when I try to get up in the night to go to the bathroom."
Additonal info
Baroceptor reflex
This is the system in the human body that regulates BP. Special nerve cells called baroceptors are located in the wall of the heart auricles (small conical pouch which projects
from the uppper front part of each atrium, the upper receiving or priming chambers), vena cava, arotic arch, and carotid sinuses, and are specialized to monitor changes in BP.
If the receptors sense a rise in blood pressure, then, through a negative feedback loop, the heart will slow down to compensate, if they sense a drop in blood pressure, the heart will speed up.
Additionally, as applicable to the patient, there is a specific condition known as postural orthostatic tachycardia syndrome (POTS), in which the heart rate increases substationally (goes into the tachy range of over 100 beats per minute) upon standing up from a lying down or sitting postion.
Best of luck with your upcoming surgery and down the road of life Live long and prosper.
Take care,
CardioStar*
WebMD member (since 8/99)
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