Tachycardia, also known as a high heart rate, is a term used to refer to a pulse rate greater than 100 beats per minute and may be a reflex when the body senses a fall in blood pressure.
Commonly some of the used medication may cause the unwanted side effect of tachycardia and low blood pressure.
The state of tachycardia and low blood pressure means fainting (syncope), dizziness, headache ,a sense of anxiety and fear and that the person needs to go to a physician.
20-40 mins depending on the person....but would not try it but...if you have to...slightly bend your knees to help your blood circulate..that would prevent you from passing out..
It is related to an emergency situation and I will look for someone who can perform EMS and automated external defibrillators (AED) and will check the carotid pulse. I will also look for someone who can perform the emergency first aid procedures. And will call for ambulance also.
