Get your Health question answered in 3 easy steps

132 Doctors Online
Owl Image
MD
Dr. Andrew Rynne

Family Physician

Exp 18 years

I will be looking into your question and guiding you through the process. Please write your question below.

Where does BP come from ?

Where does blood pressure come from ?
Tue, 15 Dec 2009
Report Abuse
Question is related to
Diseases and Conditions
  User's Response
I remain amazed at the ignorance people can display in their answers. Blood pressure is indeed determined by peripheral resistance. When your blood pressure is measured the cuff compresses an artery. As the "pressure" is released from the cuff there is a specific point at which the first spurt of blood passes through the expanding artery -- this is the "top" number (systolic value). The point at which your artery is again fully expanded during the compression will give you the "bottom" number (diastolic value). The higher the systolic value, the harder your heart is working as the blood is being forced through earlier, and at a higher value (measured in mm/Hg). Also, a high diastolic number can indicate hardening of the arteries. The artery is not able to expand as much, and is fully expanded sooner during the measurement, thus giving a higher reading.
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
This is a short, free answer. For a more detailed, immediate answer, try our premium service [Sample answer]
Share on
 

Related questions you may be interested in

doctor1 MD

yes I had a situation sunday even where my normal blood pressure went up to a variety of numbers to include 197 over 133. My l arm veins were pumping hard but my right side pretty normal. I have a common birth condition where the blood flow in is great but out slow and narrowed. Didn t go to the hospital due to stress I believe Is this a sign of something to come? Looking for a cardiologist

doctor1 MD

i had my bp checked and showed 160/100 after resting for 5 mins it goes to 140/90 after 15 mins rest it s still 140/90. i had my blood chem checked and it all went normal, i had ecg too and normal results. where could my high blood be coming from?                                                                  

doctor1 MD

I was diagnosed with high blood pressure last year after i pushed myself too hard physically, and i ve since been able to come off my meds by dieting and exercising. But i recently did an exercise that was too tough because i thought i could handle it, and the whole day after i felt unusually groggy and my systolic number was about 10 points below normal. Now that i ve recovered somewhat, my resting blood pressure is normal but it goes a bit higher than it should when i m excited or active, sometimes causing loud ringing of the ears or other symptoms. I try light exercises throughout the day but it seems like my heart is getting worn out easily, where i will get a heart rate in the 50 s sometimes or my systolic number will drop to below 110 and then my pr and bp fluxuate a bit higher throughout the day when i become active. I want to know if maybe you had some idea of what could be wrong or how to know when my exercise is too much because in contrast to exercising a fair bit before, now it mainly consists of just my daily activities and if the bar s been lowered that much i m just done. 20 year old male, scared that his new life is already over. 3 months til cardiologist apointment, primary doctor doesnt seem very concerned with my problems. I used to actually have a life.

Recent questions on Hypertension

doctor1 MD

Dr. Oz, I know you're show is geared mostly towards women but I really am in dyer need of help. I'm a 22 year old male and I'm currently taking two 20mg instant release Adderalls a day. My blood pressure is normal on a daily basis, but high blood pressure and heart disease does run in my family. My concern is in regards to Erectile Disfunction. It is a real self confidence killer! My penis doesn't get fully erect when I'm about to have sex, its hard but not where it can stay up the air hard..excuse the reference. Also some other times it will get hard, but it will not stay that way for long amounts of time. Does anyone know why this could be? I also have trouble staying hard. For example if it slips out, there is a switch of positions,or the slightest distraction, it wont remain hard. I take adderall but don't notice a difference in this when I take it and when I don't. I exercise regularly (4-5x a week) and eat relatively healthy(for a college student). I am stressed a lot and i know that could be a cause of my problems. but does anyone have any ideas? Also is it to early for someone my age (22) to take pills such as viagra or cialis? What are the long term side effects?

doctor1 MD

56 female, history of CHF, history of difference in BP standing and sitting, near end of level 3 KCD, take diuretic. high BP, controlled with meds and diet (no salt)

Gained 5 pfd in two day, trouble breathing, fluid around abdomen. Per past doc instruction, took extra dirutic fri and lost 3 pds, feel very tired and weak.

BP sat afternoon was 120/74.
Is this too low?
Ms Boots

doctor1 MD

I am 74 years old and have experienced hot flushes since menopause (at age 54). I experience moderate to high blood pressure and most medications for this make my symptoms worse. I have heart palpitations during these uncomfortable symptoms, experience fatigue and have night sweats which wake me up. I have Sjoegren's Syndrome with Sicca, and Peripehral neuropathy and most other aging symptoms. I don't have dementia, thankfully, but I am curious as to whether hot flushes are impacting on my blood pressure and contributing to my anxieties or could it be caused by my thyroid? My tests show a normal reading for my thyroid. I also had cancer of the uterus, grade 1, and had everything removed nine years ago and have remained cancer free to date. I hope you can help me find a way to improve the situation as I don't have any blocked arteries or heart problems so it is a mystery to me. I am worried about the impact it may eventually have on my heart. Sincerely yours,

doctor1 MD

Hello.
I'm male.
I'm 45 years old and I got high pressure blood since 17. I am currently taking 5 drugs to control (not at all) my high pressure blood.
In a recent Renal Angiography was discovered that I have my left kidney hypotrophic with important loss of parenchyma in the middle and lower thirds.
Analyses of plasma renin revealed that is high.

This hypotrophic kidney (left) is working by 37% and 63% right according to a renal scintigraphy.
The recommendation of my doctor(nephrology) is to get me out my hypotrophic kidney to control the high pressure blood and avoid having to take so many drugs.

What is your opinion on this?
YYYY@YYYY

doctor1 MD

how often can you take Prednisone? I have reallybad inflamation in my hands and it took it away . The swelling has come back now and I dont know that much about it.

doctor1 MD

Patient: Female, 73 years, 6 months old, 5'7" tall, 230 lbs., in generally good health. Hypertension well controlled with medication, lifelong history of recurring clinical depression . Currently takes medication for depression and hypertension,...

doctor1 MD

Im a 70 year old stage two diabetic. I woke up in the night with dry heaves...I just went to the store and fell faint and nauseated. I rested for 30 minutes and felt a lot better. I home now and concerned ! I had low blood presure. Now its 128...