Pulmonary shunt

Pulmonary shunt is a medical condition that occurs when the alveoli of the lungs fill with fluid, causing a portion of the lung to be unventilated although it is still perfused. This condition is a type of V/Q mismatch and can lead to hypoxemia and respiratory failure.

Causes

Pulmonary shunts can be caused by several conditions, including:

• Pneumonia
• Pulmonary edema
• Atelectasis
• Acute respiratory distress syndrome (ARDS)

Symptoms

The symptoms of a pulmonary shunt can vary depending on the underlying cause, but may include:

• Shortness of breath
• Cough
• Chest pain
• Fever
• Fatigue

Diagnosis

The diagnosis of a pulmonary shunt often involves a combination of physical examination, medical history, and diagnostic tests. These tests may include:

• Arterial blood gas test
• Chest X-ray
• Computed tomography (CT) scan
• Pulmonary function test

Treatment

The treatment of a pulmonary shunt depends on the underlying cause. Treatment options may include:

• Oxygen therapy
• Medications
• Surgery
• Mechanical ventilation

See also

• Respiratory system
• Lung diseases
• Hypoxemia
• Respiratory failure

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