Sinus bradycardia, or a slow heart rate, can be a sign of cardiovascular health in healthy young adults and endurance athletes. It can also be a sign of an underlying condition requiring medical ...

Sinus pressure can cause dizziness. Sinus-related dizziness (described as lightheadedness, faintness, or loss of balance) is a fairly common problem experienced with sinus infections, allergies, or ...

Distinguishing between supraventricular tachycardia (SVT) and sinus tachycardia on an ECG is crucial for accurate diagnosis and effective treatment. While both conditions present with rapid heart ...

The inferior vena cava (also known as IVC or the posterior vena cava) is a large vein that carries oxygen-depleted blood from the torso and lower body to the right side of the heart. From there the ...