Mohammad Naser Payvandi MD

What is Raynaud’s disease?Raynaud’s disease, also known as Raynaud’s syndrome or Raynaud’s phenomenon, is a rare blood vessel disorder described by a French physician named Maurice Raynaud in 1862. In this condition, the blood vessels that carry blood from the heart to other parts of the...

What does an irregular heartbeat mean?An irregular heartbeat is also medically termed as arrhythmia or dysrhythmia. An irregular heartbeat happens when the heart’s electrical signals that coordinate with your heartbeat are not properly functioning. When you have an arrhythmia, your heart may:...

IntroductionOrthopnea is the medical term used when referring to the occurrence of dyspnea (shortness of breath) when you are lying flat. This symptom is often a sign of heart failure. However, orthopnea can also be due to other health conditions. Dyspnea (shortness of breath) is not the same with...

Systemic Lupus Erythematosus is a chronic autoimmune disease that affects several systems of our body. SLE is also known as discoid lupus or disseminated lupus erythematosus. How common is SLE? Out of all the types of lupus, SLE is the most common form. Systemic Lupus Erythematosus is a very common...

Secondary hypertension refers to high blood pressure that is caused by other diseases. This is a less common form of hypertension when compared to ‘essential’ or ‘primary’ hypertension. A number of conditions that affect heart, kidneys or endocrine system may result in secondary...

Researchers have found that obstructive sleep apnea (OSA) is linked to cardiometabolic dysfunction. The study, seen in the Journal of Clinical Endocrinology and Metabolism, attempts to provide an explanation as to why sleep apnea patients often have problems associated with their heart.  Up until...