How can you tell at any time if you have a boy or girl by a fast or slow heart rate?

You can't. The heart rate does not give you any information about the sex, other than it is either a boy or a girl!
Maybe during labor? This is something many believe but research shows that there is no relationship between a fetus's heart rate and its gender except possibly during labor, when girls often have a faster heart rate. Before labor, the odds of correctly predicting boy or girl from the heart rate is 50-50.

Related Questions

Got dysautonomia, get slow heart rate 48-60 laid, standing 58-70 and lightheaded all time even laid. BP Normal. How to increase sympathetic ANSand HR?

Need more info. what is your age and do you do a lot of cardio activities? Has your MD taken your heart rate and blood pressure sitting/standing/laying all at the same visit? Does your dizziness feel like the room is moving around you? It is unusual With the numbers you give for the heart to produce your symptoms. You need to address this diagnosis further before medication. Heart rate not all that is involved. Read more...

What drugs, vitamin supplements cause slow heart rate?

Beta-blockers. Beta-blockers are drugs that slow down the heart rate. Do not attempt to slow your heart rate on your own other than through regular exercise. Consult a physician if you have a rapid heart rate. Read more...

Which drugs, vitamin supplements, or techniques cause slow heart rate?

Many drugs. Many drugs can slow your heart rate, including beta-blockers, calcium channel blockers, lithium, Cimetidine (tagamet), among many others. Heart rate can also be slowed through mind-body techniques like yoga and meditation. Supplements and vitamins will not generally cause a slow heart rate. Read more...

What are the risks of having a slow heart rate?

Depends. If the slow heart rate is sinus bradycardia from, say being well conditioned there is little risk of any serious symptoms. If however, the heart rate is slow from a pathological condition one may experience, dizziness, fainting, fatigue, low blood pressure and other related symptoms. Read more...

I've started carvedilol to slow heart rate. My BP has always ran low which made me very tired. Today im very week. Is this normal? :

Maybe. Carvedolol is a beta-blocker. This class of BP meds traditionally cause decreased heart rate and blood pressure. It is possible that you are feeling weak & tired because of the med and lowered blood pressure. You may get used to this, or you may be extra sensitive to this particular medicine. If you keep feeling tired & weak, you may need to lower the dose or change your medicine. Read more...

My two year old son developed irregular and slow heart rate with in one hour of taking prednisolone is there any relation to this?

Possibly . Corticosteroids, including prednisolone, can have the side effect of bradycardia, or a slow heart beat. There are numerous other things that can cause bradycardia, and without knowing all of the details surrounding your son's care, it is difficult to place the cause of his slow heart beat on prednisolone. Read more...