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High cholesterol (medical name: Hypercholesterolemia) is a common condition that affects the overall health of an individual. Now the question arises, what is cholesterol and what is its role in the body? Cholesterol is a creamy, fat-like substance produced by the liver. Cholesterol is essential for producing hormones such as vitamin D and helping in digesting…
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World Thyroid Day 2025 will be observed worldwide on May 25 to raise awareness of thyroid health, promote education, and support early diagnosis and treatment of thyroid disorders. This observance was established by the European Thyroid Association (ETA) and is now recognized internationally, including by the American Thyroid Association (ATA) and other global health bodies. What is…
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What is Obstructive Sleep Apnea? Obstructive sleep apnea is a sleep disorder characterized by repeated interruptions in breathing due to the relaxation of throat muscles. These blockages restrict airflow, leading to decreased oxygen levels and frequent awakenings throughout the night. Symptoms of obstructive sleep apnea include loud snoring, daytime fatigue, morning headaches, difficulty concentrating, and irritability.…
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Introduction: High cholesterol refers to the presence of an excessive amount of cholesterol in the bloodstream. It can lead to the development of cardiovascular diseases such as atherosclerosis (narrowing and hardening of the arteries) and stroke. It can also contribute to poor blood flow to the brain, which may result in symptoms like dizziness or…
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Overview: Celebrating International Clinical Trials Day 2023 on May 20th Every year we celebrate Clinical Trials Day on 20th May. It is a special day to raise awareness about the importance of clinical trials in medical research. The day marks the anniversary of the first clinical trial, led by James Lind in 1747, which aimed to…
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Introduction Ever wonder what exactly blood pressure means? Or physiologically speaking, how does the blood generate pressure? What causes it to develop, and what should we do to prevent it from rising? Put simply, there are several causative factors affecting the cardiac output and blood pressure within the vasculature. The key to the crux lies…
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Dr. Farhana Kazi is a well known Cardiologist affiliated with Baylor Scott and White, Heart Hospital Plano in Coppell, Texas. For the past 15 years, Dr. Kazi has been serving the Dallas community through exemplary care, education and clinical research. After completing her fellowship at UT Southwestern Medical Center, she joined the VA Medical Center…
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Introduction: What is Total Peripheral Resistance? Peripheral vascular resistance (total peripheral resistance or systemic vascular resistance) refers to the resistance to blood flowing through the arteries and arterioles in the peripheral circulation. It is an important physiological phenomenon that plays a vital role in maintaining blood pressure and blood flow to all organs and tissues.…
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Sinus Node Dysfunction, formerly known as Sick Sinus Syndrome describes disorders related to the conduction and propagation of electrical signals at the sinoatrial node. The sinoatrial node is also called as natural pacemaker of the heart as it generates electrical signals and is responsible for setting the rhythm and rate in a healthy heart. Sinus node dysfunction…
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Introduction Before asking “what is sinus arrhythmia?” we should know about the normal sinus rhythm. A normal sinus rhythm (NSR) is a rhythm that originates in the sinus node and has the same frequency as a normal heartbeat. The rate of the normal sinus rhythm varies according to the inputs from the nervous system. In…