Melvyn Vanroy Mahon MD FACC

IntroductionNicotine is an alkaloid stimulant that comes from the nightshade family of plants, particularly from the leaves of tobacco. The type of nicotine found in tobacco plants is called Nicotiana tabacum. Nicotine can also be synthetically produced. Thousands of chemicals are contained in...

What is a bubble study?A bubble study is a type of echocardiogram, which is the ultrasound of the heart. An echocardiogram is done to visualize the heart and its surrounding areas. Better images of the heart can be produced when a “contrast” is used during the echocardiogram. In a bubble study,...

High blood pressure, also known as hypertension, refers to the increased pressure exerted on the walls as blood passes through arteries. Normal blood pressure is measured as 120/80 mm Hg. Pressure in the range of 120/80 and 139/89 mm Hg is referred to as pre-hypertension, and those above the higher...

What Is Left-Sided Congestive Heart Failure?Heart failure means your heart is not able to work as well as it once did.Left-sided congestive failure is a critical condition in which the left side of the heart doesn’t pump blood efficiently. It is unable to meet the body’s metabolic needs,...

Tachycardia refers to rapid heartbeat, with more than 100 beats per minute. When this fast rhythm starts from the lower chambers of the heart (the ventricles) this condition is referred to as ventricular tachycardia. This fast beating heart rate may lead to a condition called ventricular...

Our body has certain parameters to maintain its normal functioning. Blood sugar levels and blood pressure readings are just a couple of screenings that can determine the body's functioning system. While having a high blood pressure is more commonly regarded by most people as dangerous, some people...