Rakesh K. Pai MD FACC


Premature Ventricular Contractions (PVCs)

Describes early heartbeats that happen when the ventricles beat too soon. Describes symptoms and when to call a doctor. Explains that in most cases the early heartbeats are not serious and go away on their own.

Postural Orthostatic Tachycardia Syndrome (POTS)

POTS is a fast heart rate (tachycardia) that starts after you stand up. This can suddenly happen as long as 10 minutes after you stand. With POTS, the body does not control blood pressure or heart rate as it should after you stand up. So for a brief time, you may not get enough blood to your brain. This can make you…

Triggers of Sudden Heart Failure

Sudden heart failure happens when your heart suddenly cannot pump as much blood as your body needs. Certain things, called triggers, can cause sudden heart failure. These triggers make it harder for your heart to pump well. But if you know what the triggers are, you can try to prevent them. What you can do to prevent…

Diuretics and Potassium Supplements

Some diuretics can cause low levels of potassium. A delicate balance of potassium is needed to properly transmit electrical impulses in the heart. A low potassium level can disrupt the normal electrical impulses in the heart and lead to irregular heartbeats (arrhythmias). If potassium levels are low, a potassium…

Catheter placement in femoral vein

For angiography, a thin, soft tube (catheter) is placed in a blood vessel in the groin (such as in the femoral vein). First, a doctor numbs the area with a local anesthetic. Then, a needle is placed into the blood vessel. A guide wire is put through the needle into the blood vessel and the needle is removed. The…