Low carbs and pulse rate?

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Question:

Why? Just Carmen’s turn to get kicked or something else? Just looking for a cardiologist to comment on a cardiac related question. Okay then. Just on pins and needles these days, and snappy as a result. Sorry.

I fully understand and did take no offense due to your well deserved High Anxiety. The relationship between blood volume, blood pressure and heart rate is pretty straight forward. The effect of dehydration on the system is also pretty straight forward. The beta blocker the OP was on would be something I’d like to see a cardiologist comment on though. I’m going to put the OP’s original text in here for that purpose: "I take a beta-blocker for blood pressure. Started a no-carb period a few days ago, and the pounds seem to be peeling away. But I feel queasy, headachey, exhausted and weak – normal entry symptoms? More concerning, my pulse rate is up from 70-ish to 90-ish much of the time. Does this diet affect pulse, beta-blocker metabolism, or any such? I also drink one cup of black tea a day, occasionally two. Could the effects of theophylline and caffeine be enhanced?" There’s more than just the diet at work in the equation, so it’s better if Andrew sees it all.

Works for me. http://antwrp.gsfc.nasa.gov/apod/ap031122.html Lift well, Eat less, Walk fast, Live long.

Response:

- Hide quoted text — Show quoted text – Hello, The diet does tend to cause a significant amount of water weight to leave at first. The more water leaves, the lower total blood volume goes and the faster the heart has to beat to maintain blood pressure. Why? Just Carmen’s turn to get kicked or something else? Just looking for a cardiologist to comment on a cardiac related question. Okay then. Just on pins and needles these days, and snappy as a result. Sorry. The relationship between blood volume, blood pressure and heart rate is pretty straight forward. The effect of dehydration on the system is also pretty straight forward. The beta blocker the OP was on would be something I’d like to see a cardiologist comment on though. I’m going to put the OP’s original text in here for that purpose: "I take a beta-blocker for blood pressure. Started a no-carb period a few days ago, and the pounds seem to be peeling away. But I feel queasy, headachey, exhausted and weak – normal entry symptoms? More concerning, my pulse rate is up from 70-ish to 90-ish much of the time. Does this diet affect pulse, beta-blocker metabolism, or any such? I also drink one cup of black tea a day, occasionally two. Could the effects of theophylline and caffeine be enhanced?" There’s more than just the diet at work in the equation, so it’s better if Andrew sees it all. Take care, Carmen

Could be the effects of hyperketonemia on vascular reactivity. Some people are more sensitive to it than others. Humbly, Andrew — Dr. Andrew B. Chung, MD/PhD Board-Certified Cardiologist http://www.heartmdphd.com/

Response:

The most sensitive way to detect dehydration is by history (history of not drinking, vomiting, and/or diarrhea) and physical exam (poor skin turgor, dry lips, and orthostasis). Can dehydration be diagnosed with a blood sample for water content?

No. An elevated blood urea nitrogen (BUN) to creatinine ratio would suggest dehydration. Humbly, Andrew — Dr. Andrew B. Chung, MD/PhD Board-Certified Cardiologist http://www.heartmdphd.com/

Response:

The most sensitive way to detect dehydration is by history (history of not drinking, vomiting, and/or diarrhea) and physical exam (poor skin turgor, dry lips, and orthostasis).

Can dehydration be diagnosed with a blood sample for water content? http://antwrp.gsfc.nasa.gov/apod/ap031122.html Lift well, Eat less, Walk fast, Live long.

Response:

Hello, The diet does tend to cause a significant amount of water weight to leave at first. The more water leaves, the lower total blood volume goes and the faster the heart has to beat to maintain blood pressure. Why? Just Carmen’s turn to get kicked or something else? Just looking for a cardiologist to comment on a cardiac related question.

Okay then. Just on pins and needles these days, and snappy as a result. Sorry. The relationship between blood volume, blood pressure and heart rate is pretty straight forward. The effect of dehydration on the system is also pretty straight forward. The beta blocker the OP was on would be something I’d like to see a cardiologist comment on though. I’m going to put the OP’s original text in here for that purpose: "I take a beta-blocker for blood pressure. Started a no-carb period a few days ago, and the pounds seem to be peeling away. But I feel queasy, headachey, exhausted and weak – normal entry symptoms? More concerning, my pulse rate is up from 70-ish to 90-ish much of the time. Does this diet affect pulse, beta-blocker metabolism, or any such? I also drink one cup of black tea a day, occasionally two. Could the effects of theophylline and caffeine be enhanced?" There’s more than just the diet at work in the equation, so it’s better if Andrew sees it all. Take care, Carmen

Response:

- Hide quoted text — Show quoted text – The diet does tend to cause a significant amount of water weight to leave at first. The more water leaves, the lower total blood volume goes and the faster the heart has to beat to maintain blood pressure. Dehydration can result in a higher resting heart rate and lower blood pressure. It would then follow that Carmen’s statement is not an absolute and that dehydration does not cause increased HR and lowered BD absolutely either. The, it would follow, that dehydration could result in neither HR or BP changes. However, since dehydration is an ABnormal state, we would expect that there would be physiological changes or adjustments. Are you then suggesting that the most observable change, in your experience is that dehydration = lowered BP and faster HR? That BP is not maintained?

The most sensitive way to detect dehydration is by history (history of not drinking, vomiting, and/or diarrhea) and physical exam (poor skin turgor, dry lips, and orthostasis). Humbly, Andrew — Dr. Andrew B. Chung, MD/PhD Board-Certified Cardiologist http://www.heartmdphd.com/

Response:

Dehydration can result in a higher resting heart rate and lower blood pressure. Humbly, Andrew — Dr. Andrew B. Chung, MD/PhD Board-Certified Cardiologist http://www.heartmdphd.com

Response:

Dehydration can result in a higher resting heart rate and lower blood pressure.

It would then follow that Carmen’s statement is not an absolute and that dehydration does not cause increased HR and lowered BD absolutely either. The, it would follow, that dehydration could result in neither HR or BP changes. However, since dehydration is an ABnormal state, we would expect that there would be physiological changes or adjustments. Are you then suggesting that the most observable change, in your experience is that dehydration = lowered BP and faster HR? That BP is not maintained? http://antwrp.gsfc.nasa.gov/apod/ap031122.html Lift well, Eat less, Walk fast, Live long.

Response:

Hello, The diet does tend to cause a significant amount of water weight to leave at first. The more water leaves, the lower total blood volume goes and the faster the heart has to beat to maintain blood pressure. Thanks, Carmen. I wondered about dehydration, since that’s what this feels like. I drink as much water as I can hold, but it’s not quite enough. I’ll try a couple more days, then either add in a few carbs or get medical advice.

I hope you’ve either recovered or gotten to the doctor by now. Please keep me posted. Take care, Carmen

Response:

The diet does tend to cause a significant amount of water weight to leave at first. The more water leaves, the lower total blood volume goes and the faster the heart has to beat to maintain blood pressure. Why? Just Carmen’s turn to get kicked or something else?

Just looking for a cardiologist to comment on a cardiac related question. http://antwrp.gsfc.nasa.gov/apod/ap031122.html Lift well, Eat less, Walk fast, Live long.

Response:

Hello, I take a beta-blocker for blood pressure. Started a no-carb period a few days ago, and the pounds seem to be peeling away. But I feel queasy, headachey, exhausted and weak – normal entry symptoms? More concerning, my pulse rate is up from 70-ish to 90-ish much of the time. Does this diet affect pulse, beta-blocker metabolism, or any such? I also drink one cup of black tea a day, occasionally two. Could the effects of theophylline and caffeine be enhanced?

The diet does tend to cause a significant amount of water weight to leave at first. The more water leaves, the lower total blood volume goes and the faster the heart has to beat to maintain blood pressure. In your case you’d be best off working with your doc’s knowledge. The meds may need adjustment. Take care, Carmen

Response:

Thanks, Carmen. I wondered about dehydration, since that’s what this feels like. I drink as much water as I can hold, but it’s not quite enough. I’ll try a couple more days, then either add in a few carbs or get medical advice.

Response:

Theo, Call your doctor. Your blood pressure may have dropped very quickly or you may have an electrolyte imbalance (as is common int the first days of a low carb diet). The latter could affect your heart beat. Beta blockers are powerful drugs. Don’t screw around with this one. Get professional advice now. — Jenny - Low Carbing for 4 years. At goal for weight. Type 2 diabetes, hba1c 5.2. Cut the carbs to respond to my email address! Low carb facts and figures, my weight-loss photos, tips, recipes, strategies for dealing with diabetes and more at http://www.geocities.com/jenny_the_bean/ Looking for help controlling your blood sugar? Visit http://www.alt-support-diabetes.org/Newly%20Diagnosed.htm – Hide quoted text — Show quoted text – I take a beta-blocker for blood pressure. Started a no-carb period a few days ago, and the pounds seem to be peeling away. But I feel queasy, headachey, exhausted and weak – normal entry symptoms? More concerning, my pulse rate is up from 70-ish to 90-ish much of the time. Does this diet affect pulse, beta-blocker metabolism, or any such? I also drink one cup of black tea a day, occasionally two. Could the effects of theophylline and caffeine be enhanced? Thanks- Theo

Response:

That is how I used to feel when I started in Induction. My heart rate would be higher when I worked out for no apparent reason. It is more in line now and at rest it is in the low 60’s which is kind of cool. Curt – Hide quoted text — Show quoted text – I take a beta-blocker for blood pressure. Started a no-carb period a few days ago, and the pounds seem to be peeling away. But I feel queasy, headachey, exhausted and weak – normal entry symptoms? More concerning, my pulse rate is up from 70-ish to 90-ish much of the time. Does this diet affect pulse, beta-blocker metabolism, or any such? I also drink one cup of black tea a day, occasionally two. Could the effects of theophylline and caffeine be enhanced? Thanks- Theo

Response:

You might consider getting your own blood pressure monitoring device. They aren’t that expensive and can be very useful. I have found that my bp and heart rate are inversely related. – Hide quoted text — Show quoted text – I take a beta-blocker for blood pressure. Started a no-carb period a few days ago, and the pounds seem to be peeling away. But I feel queasy, headachey, exhausted and weak – normal entry symptoms? More concerning, my pulse rate is up from 70-ish to 90-ish much of the time. Does this diet affect pulse, beta-blocker metabolism, or any such? I also drink one cup of black tea a day, occasionally two. Could the effects of theophylline and caffeine be enhanced? Thanks- Theo

Response:

I also drink one cup of black tea a day, occasionally two. Could the effects of theophylline and caffeine be enhanced? Hi Theo; Since being on LC I had to give up all caffeine because of the effects it had on me. I had a racing heartbeat and PAC’s (Premature Arterial Contractions). It was like taking a hit of speed to me. But that was me, it may very well be your medication. We are human therefore all unique. By all means discuss it with your Dr. That’s what you pay him for. Your health is nothing to mess around with. Best Regards; Marty

Response:

http://antwrp.gsfc.nasa.gov/apod/ap031122.html Lift well, Eat less, Walk fast, Live long.

Response:

Why? Just Carmen’s turn to get kicked or something else? Carmen

Response:

I take a beta-blocker for blood pressure. Started a no-carb period a few days ago, and the pounds seem to be peeling away. But I feel queasy, headachey, exhausted and weak – normal entry symptoms? More concerning, my pulse rate is up from 70-ish to 90-ish much of the time. Does this diet affect pulse, beta-blocker metabolism, or any such? I also drink one cup of black tea a day, occasionally two. Could the effects of theophylline and caffeine be enhanced? Thanks- Theo

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