What are the cause for having a 190- 200 pulse rate?

A pulse rate of 190-200 beats per minute (bpm) is considered extremely high and is a medical emergency. It is known as tachycardia, and it can be caused by a variety of underlying conditions. Some of the most common causes include:

1. Supraventricular Tachycardia (SVT): SVT is a type of fast heart rhythm that originates in the upper chambers of the heart (atria). It can be caused by abnormal electrical signals in the heart or by certain medications.

2. Ventricular Tachycardia (VT): VT is a type of fast heart rhythm that originates in the lower chambers of the heart (ventricles). It is often associated with heart disease, such as coronary artery disease or a heart attack.

3. Atrial Fibrillation (AFib): AFib is the most common type of irregular heart rhythm, and it can sometimes cause a rapid pulse rate. It occurs when the electrical signals in the heart become disorganized, leading to irregular and often fast heartbeats.

4. Wolff-Parkinson-White Syndrome (WPW): WPW is a rare congenital heart condition in which there is an extra electrical pathway between the atria and ventricles, leading to rapid heart rates.

5. Hyperthyroidism: An overactive thyroid gland (hyperthyroidism) can cause the heart rate to increase, leading to tachycardia.

6. Pheochromocytoma: Pheochromocytoma is a rare tumor of the adrenal glands that can release hormones such as adrenaline, causing a rapid heart rate.

7. Severe Anemia: Anemia, a condition characterized by low red blood cell count, can cause the heart to beat faster to compensate for the lack of oxygen-carrying capacity in the blood.

8. Drug Overdose or Toxicity: Certain drugs, such as cocaine and amphetamines, can cause a rapid heart rate as a side effect or as a result of an overdose.

9. Excessive Caffeine or Alcohol Consumption: Excessive consumption of caffeine or alcohol can temporarily increase the heart rate.

10. Electrolyte Imbalances: Severe imbalances in electrolytes, such as potassium or calcium, can affect heart function and lead to a rapid heart rate.

It's important to seek immediate medical attention if you experience a pulse rate of 190-200 bpm or if you have any symptoms associated with a fast heart rate, such as chest pain, shortness of breath, dizziness, or fainting. The underlying cause will need to be diagnosed and treated promptly to prevent serious health complications.