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Doctor insights on: Dangerous Heart Rate Levels

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Is a heart rate of 45 dangerous?

Is a heart rate of 45 dangerous?

Slow heart beat: If you don't have any symptoms like dizziness, pre-syncope, syncope or fatigue or chest pain or shortness of breath, then you are ok. But you complained of chest pain. Hence it should be treated. Its etiology should be elicited. Thyroid problems and blocks in heart arteries should be ruled out. Consult your physician. ...Read more

Heart Rate (Definition)

Heart rate is a measurement of the number of times a person's heart beats in one minute. Normal heart rates vary with a person's age and with excitement and exercise. Abnormal heart rates are too slow, too fast, and/or irregular (too much ...Read more


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What is considered a dangerous heart rate?

What is considered a dangerous heart rate?

Heart rate: Normally heart rate responds to exercise or physiologic demand levels. Usually we don't see it go over 180-200 even with high levels of exercise. This level while tolerated by 'normals' may be dangerous in patients with heart disease or other forms of disease. In other words, one number doesn't fit all. ...Read more

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What's is a dangerous heart rate while doin cardio?

What's is a dangerous heart rate while doin cardio?

Varies: There is no specific dangerous heart rate during exercise. How fast your heart beats with exercise depends on a number of factors, especially your conditioning. If you are healthy, a heart reate in the 170's or even higher may be ok and tolerated. Now if you have a problem such as coronary disease, the safe heart rate would depend on an assessment by your doctor. A stress test is commonly done. ...Read more

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How dangerous is it if my heart rate drops below 40?

How dangerous is it if my heart rate drops below 40?

Depends: It depends. ....What symptoms do you or don't you have? Many people experience heart rates in the 30s during sleep. Further evaluation & holter or event monitoring should be considered. See your physician. ...Read more

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What do you advise for heart rate of 30. is that dangerous?

What do you advise for heart rate of 30. is that dangerous?

Depends: It depends on how long, what time of day, and whether there are any symptoms present. It's not unusual to drop to 30 during sleep or to have a brief spell of 30 while awake. It also depends what caused it: the EKG will have clues. ...Read more

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What happens if you go over your max heart rate while working out? Dangerous?

What happens if you go over your max heart rate while working out? Dangerous?

Maximal heart rate: Calculations are estimates. If you are heathy enough nothing will happen to you. During exercise you go up to where you can go. I go over mine all the times at 50 y/0. Enjoy your work out. ...Read more

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My heart rate has been between 100 and 108 for about five hours now. Is this dangerous?

My heart rate has been between 100 and 108 for about five hours now. Is this dangerous?

No: But concentrating on your heart rate has the tendency to INCREASE IT!


Just a thought

Hope it helps
Dr Z ...Read more

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My heart rate races when I lay down almost every night, it wakes me up. Is this dangerous?

My heart rate races when I lay down almost every night, it wakes me up. Is this dangerous?

Usually benign: Get checked though for thyroid disorder, arrythmia (svt, pvc) etc. Or could just be anxiety/panic attack. Have u had holter monitoring done? Cut down on caffeine, soda, energy drinks and alcohol. Go see your dr for a repeat ekg. May need a beta blocker. If stress echo is normal, it means your heart is structurally sound. You are still young to have serious heart ailment. Give us some feedback! ...Read more

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While I'm cycling in the morning my heart rate goes to as up as 175bpm with a average of 150bpm. It's that too dangerous or its normal?

While I'm cycling in the morning my heart rate goes to as up as 175bpm with a average of 150bpm. It's that too dangerous or its normal?

Normal: Everyone has an intrinsic "maximal heart rate" which is different for each of us. During a strenuous workout, you may in fact want to get to 95% of your max heart rate. Unfortunately, without a max heart rate test, you don't know what that is. In any event, if you feel good about the effectiveness of your workouts then there is no cause for concern. ...Read more

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What should you do in regard to the intensity of your workout if your post-exercise heart rate is above either the five- or 10-minute levels?

What should you do in regard to the intensity of your workout if your post-exercise heart rate is above either the five- or 10-minute levels?

Exercise: If you're concerned about these numbers consult your dr. About the meaning vis a vis your workout, making a recommendation only on the info here is inappropriate, not that simple. ...Read more

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Was doing some cardio work outs yesterday for the first time in a while and my heart rate went up to 200 beats a min. Is this normal or dangerous?

Was doing some cardio work outs yesterday for the first time in a while and my heart rate went up to 200 beats a min. Is this normal or dangerous?

Neither: Deconditioned peole can have rapid pulses with excercise. Depending on ones age the heart rate max is 220- the age. So for a 20 year old this can be normal. The heart rate with exercise should improve with persisten excercise as vagal tone improves. One should stopnexcercise if dizzy, lightheaded, chest pain or excessive difficulty breathing and see a doctor to be sure. ...Read more

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Been bedridden for a year, been sitting up some lately. Sat up 4 hours and counting as of this post Heart rate up at 89. Is this dangerous for me?

Been bedridden for a year, been sitting up some lately. Sat up 4 hours and counting as of this post Heart rate up at 89. Is this dangerous for me?

Heart rate: Normal heart rate is 60-100. Deconditioning and muscle wasting will occur in patients who are bedridden and heart rates will be higher. Additionally standing and walking will require intense physical therapy ...Read more

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In the morning when I stand up my heart rate is higher than usual 100+BPM then levels out. This also happens if I been laying down for awhile. Normal?

In the morning when I stand up my heart rate is higher than usual 100+BPM then levels out. This also happens if I been laying down for awhile. Normal?

Hi. Look your diet: Hi lisa. Is normal that your HR. Will be around 80. at rest. Look your diet, caffeine, anxiety...If everything is normal made thyroid lab with your physician. But no worry a lot of. Have a great day. ...Read more

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If your heart rate is 150 and SPO2 is 90, is that dangerous?

If your heart rate is 150 and SPO2 is 90, is that dangerous?

Maybe: If you are resting, a heart rate of 150 and SPO2 of 90 is definitely abnormal. See your doctor. ...Read more

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My heart rate is at 116, is it dangerous?

My heart rate is at 116, is it dangerous?

Perhaps...: Get more physical buddy! Become a fit and happy dude... Good luck! ...Read more

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MY HEART RATE IS 121-124 BPM IS IT DANGEROUS?

MY HEART RATE IS 121-124 BPM IS IT DANGEROUS?

No: That heart rate isn't dangerous but it's unclear whether or not it's normal. If you've been active, anxious, have fever, pain, thyroid excess, anemia etc., it may be appropriate. If you're resting and it doesn't slow down over 5 minutes, it's abnormal and you should get an EKG done ASAP for purposes of diagnosis. ...Read more

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Is a heart rate 30bpm above resting level bad?

Is a heart rate 30bpm above resting level bad?

Variable: Heart rate is variable... That means it is dynamic and changes depending on your mood, anxiety level, level of fitness, present activity, etc... Heart rate of 30 beats per minute above baseline could be normal depending on the situation. Talk to your doctor about your concerns. ...Read more

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Hoping you can tell me, is high heart rate dangerous?

Hoping you can tell me, is high heart rate dangerous?

How high?: High heart rate more than 100 beats per minute can be a sign of lack of physical conditioning, endocrine disease like hyperthyroidism, sign/symptom of heart disease, dehydration, lung disease like asthma/copd, drug induced like to much caffeine/ energy drinks, chronic disease like liver and renal insufficiency, etc. You need a history and physical to evaluate the reason. ...Read more

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What is a dangerous heart rate for a 51 year old female at rest?

What is a dangerous heart rate for a 51 year old female at rest?

Resting HR: HR is usually between 60-90, 72 is best. We usually don't worry till < 45 or 40 (may not perfuse enough), as athletes may have HR in 50's, or higher than 100 (120-130 is really more worrisome (beating to fast to perfuse), 100 just tells us to evaluate why high). Hypo/hyperthoridism affect HR, medications (caffeine/alcohol/), POTS, cardiac issues, rare conditions like carcinoid/ f/u/ w/ doc, ...Read more

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When does an elevated heart rate become dangerous? How high or long?

When does an elevated heart rate become dangerous? How high or long?

High heart rate: Mostly it depends on symptoms associated with the heart rate, so if the rate is 120 beats per minute and the patient has shortness of breath or chest pain associated with it, then it is too high. However, if you are active and exercise regularly then your heart can tolerate a higher heart rate for a longer period of time. ...Read more

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Is it dangerous if I feel my baby's heart rate goes up a lot when he cries?

Is it dangerous if I feel my baby's heart rate goes up a lot when he cries?

No: It is very normal for your baby's heart rate to elevate when he is fussy. As long as his color appears to be normal (i.e. Lips remain pink in color, never dusky, blue or purple), your baby is having good circulation. Once your baby calms down, the heart rate should go back down to it's normal pace. ...Read more

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What is an acceptable recovery heart rate level ten minutes after exercising?

What is an acceptable recovery heart rate level ten minutes after exercising?

Many variables: Many different factors contribute to the heart rate in recovery after exercise: the normal resting (pre-exercise) heart rate, the intensity and duration of exercise, the hydration status after exercise, and the conditioning level of the subject. In general, the heart rate should have returned close to the baseline heart rate 10 minutes after moderate exercise, but this is not always true. ...Read more

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What is an acceptable recovery heart rate level five minutes after exercising?

Heart rate: There are no firm norms but a 10beat /min. Drop in the first minute post exercise is normal and by 5min post exercise the rate should have returned toward resting rate. ...Read more

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1. What is an acceptable recovery heart rate level five minutes after exercising?

Exercise: Generally heart rate returns to the vicinity of the resting rate within 5 minutes unless the exercise was prolonged and high level. ...Read more

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When you increase your level of activity, does your heart rate increase or decrease?

When you increase your level of activity, does your heart rate increase or decrease?

Increases: If it doesn't increase, you need to see a doctor! (the condition is called "chronotropic incompetence"). ...Read more

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Can you exercise so hard that you go over your max heart rate? If so, is it dangerous?

Can you exercise so hard that you go over your max heart rate? If so, is it dangerous?

Exercise and pulse: Young people can easily exceed the recommended pulse rate of (220-age) x 0.7. First off, it's an artificial, but fair estimate for the average person in average condition. Use it as a gauge for measuring cardiovascular fitness. As you get fit, equivalent amounts of exercise should require lesser heart rates; greater exertion can be done with similar heart rates. Don't over think it or overdo it. ...Read more