National Telemetry Association Practice Exam 2025 – Complete Prep Resource

Mitral stenosis is a condition where the mitral valve becomes narrowed, which restricts blood flow from the left atrium into the left ventricle. This narrowing can occur due to various factors, including congenital defects or damage caused by rheumatic fever, an inflammatory condition that can arise from untreated strep throat.

In mitral stenosis, the heart must work harder to pump blood through the narrowed valve, which can lead to symptoms such as shortness of breath, fatigue, and palpitations. The left atrium may enlarge over time due to the increased pressure needed to move blood through the stenosed valve, potentially leading to further complications such as atrial fibrillation.

Understanding the specifics of mitral stenosis helps to identify it correctly when differentiating from other conditions affecting heart valves. For instance, while mitral valve regurgitation involves a backward flow of blood due to improper closure of the mitral valve, mitral valve prolapse refers to the valve leaflets bulging back into the left atrium during contraction. Aortic stenosis is a separate condition affecting the aortic valve rather than the mitral valve. Each of these conditions has unique characteristics and implications for treatment, making the distinction important in clinical practice.