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Cardiac tamponade is
a medical emergency caused by the rapid accumulation of fluid, blood,
or pus within the pericardial sac surrounding the heart. As pressure
builds, the heart cannot expand properly during relaxation, leading to reduced
filling of the chambers and a significant drop in cardiac output. This
condition may develop after chest trauma, heart surgery, cancer, severe
infections, kidney failure, or complications of pericardial diseases. In
some cases, it occurs suddenly, while in others, fluid accumulates
gradually until symptoms become severe.
Common symptoms include
severe shortness of breath, chest discomfort, dizziness, rapid heartbeat,
weakness, and fainting. Physical findings may include low blood pressure,
distended neck veins, and muffled heart sounds, collectively known as Beck's
triad. Echocardiography is the primary diagnostic tool because it quickly
identifies fluid around the heart and its effect on cardiac function.
Immediate treatment focuses on relieving pressure by removing the accumulated fluid through pericardiocentesis or surgical drainage. Additional therapy targets the underlying cause, such as infection, bleeding, or malignancy. Without prompt intervention, cardiac tamponade can rapidly progress to shock, organ failure, and death. Early recognition, emergency treatment, and ongoing monitoring greatly improve survival and reduce the risk of serious complications or recurrence.