Health - Heart Rate on Diphenhydramine

[dragoon]

SWIM took 200mg Diphenhydramine and experienced a very rapid heart rate. He was very curious as to just how fast his heart was beating. Unfortunately he was in no condition to try and figure out what the exact rate was, so the next day he looked into buying a heart rate monitor. Due to the awesomeness of the internet, he bought one at a reasonable price, and said it should arrive in a few days.

He plans to try out 400mg and see what his heart rate goes to. He says he will post the results. Does anyone know around what rate he should be expecting?

[RaverHippie]

everyone's heart rate can vary due to the level of physical fitness. And I've never personally seen a heart rate taken for a recreational dose of diphenhydramine.

[EscapeDummy]

Lets say your average heart rate is 80. Cannabis' increase in heart rate is generally 20-30 bpm, so it'd go up to 110. Diphenhydramine ****s with your heart much more though, so 120-140 should be expected, at least. A heart rate near or above 180 could mean trouble though.

[pinksox]

He plans to try out 400mg and see what his heart rate goes to. He says he will post the results. Does anyone know around what rate he should be expecting?

Why on Earth would anyone PURPOSELY try to ramp up their heart rate over 200 beat per minute? If it went to that with 200mg, chances are great it'll go higher with a larger dose.

Is SWIY trying to kill themselves?

One's heart can't go above a certain rate and still be able to supply the bodies tissues and organs with oxygen and give them time to offload their carbon dioxide. They also greatly increase their chances of suffering a fatal arrhythmia. If the pacing cell/node send the signal to contract during the last half of repolarization(T-wave/relative refractory period), it's game over and sudden cardiac death for SWIY. Chances of this occurring increase with rate.

SWIY is playing a dangerous game my friend.

Reputation Comments on this post:

	good advice
	solid, experiential advice

[poorleno]

great post pinksox. SWIY might also unintentionally exaggerate anxiety by watching the heart rate and also bear in mind the accuracy of some monitors and their calibration. I took to running again when getting straightened up and thought it would be vigilant to use one in case the body was fragile after some bad living..bad mistake! Ended up in casualty following a 230bpm spike convinced I was going to die! The far more accurate ECG showed a perfectly normal, and actually healthy reading.. ;-) The main point is I felt fine but the monitor was suggesting I shouldn't..so listen to your body, if you don't feel comfortable with any recreational activity, take heed!

[dragoon]

Over the past few months SWIM has experimented with Diphenhydramine.

SWIM's resting heart rate is about 70bmp. SWIM has taken 900mg on a few occasions and his heart rate roughly doubles to 140bpm. SWIM's heart rate goes higher than this when he excercises, and he was glad to find out that his heart wasnt jumping to crazy speeds like 200bpm.

SWIM is currently in love with his 900mg nights of insanity but keeps them three weeks apart due to tolerance, health concerns, and the fact that a serious trip puts SWIM totally out of commission for a day or two afterwards.

SWIM is considering putting a trip report together, but SWIM is a huge procrastinator.

[PatrickAcc]

To check your heart rate get a clock that shows seconds or a timer and time out 30 seconds while counting your pulse. Once done multiply your pulse by 2 and thats your bpm.

Reputation Comments on this post:

Yep, yep. Thats pretty much right on. One can also do 15 seconds times 4, but 30 is more accurate IF the rate is irreg...

[EscapeDummy]

Originally Posted by pinksox

Why on Earth would anyone PURPOSELY try to ramp up their heart rate over 200 beat per minute? If it went to that with 200mg, chances are great it'll go higher with a larger dose.

Is SWIY trying to kill themselves?

One's heart can't go above a certain rate and still be able to supply the bodies tissues and organs with oxygen and give them time to offload their carbon dioxide. They also greatly increase their chances of suffering a fatal arrhythmia. If the pacing cell/node send the signal to contract during the last half of repolarization(T-wave/relative refractory period), it's game over and sudden cardiac death for SWIY. Chances of this occurring increase with rate.

SWIY is playing a dangerous game my friend.

I was wondering, does the cardiac arrest chance increasing with rate only apply to "artificially" stimulating the heart? Runners, swimmers, and tough aerobic sports athletes (such as basketball or soccer) will have their BPM very high, very often, maybe 6 or even 7 days of the week. I know from personal experience that runners' heart rates, at the end of racing say an all-out mile, will reach 200 bpm or perhaps beyond. How come this tends to not increase the chances of the heart repolarization cardiac arrest deal?

[RaverHippie]

Originally Posted by EscapeDummy

I was wondering, does the cardiac arrest chance increasing with rate only apply to "artificially" stimulating the heart? Runners, swimmers, and tough aerobic sports athletes (such as basketball or soccer) will have their BPM very high, very often, maybe 6 or even 7 days of the week. I know from personal experience that runners' heart rates, at the end of racing say an all-out mile, will reach 200 bpm or perhaps beyond. How come this tends to not increase the chances of the heart repolarization cardiac arrest deal?

The body is designed to operate under these conditions. The entire system is under stress and each part has a mechanism with which to deal with the effects of overexertion. Having your heart suddenly jolted to 3 times its resting heart rate isn't really a naturally occurring phenomenon and is usually a cause for concern.

This is just speculation on my part.

[poorleno]

I think you're both 'right'. Someone who definitely isn't me ended up in arrhythmia hell one night and ended up in the emergency unit. Where I live isn't as difficult as say in the US to talk straight to the docs so swim 'fessed. Cardiologist explained that any activity that pushes the heart to its limit is potentially dangerous but as a muscle, athletes are more likely to develop this muscle properly whereas recreational users are often not as physically fit. Then there is the whole interaction between the lungs, heart, kidneys etc which is often unnaturally interrupted by a drug, whereas the basic human 'fight or flight' reaction kicks in when competing; heart quickens, but so do lungs, blood goes to the 'right' parts etc. Needless to say, I don't fancy testing either scenario...enjoy people!