Final answer:
The TEE criteria for severe aortic stenosis include a peak aortic jet velocity >4 m/s, a mean transaortic gradient >40 mmHg, and an aortic valve area <1.0 cm² or indexed <0.6 cm²/m².
Step-by-step explanation:
TEE Criteria for Severe Aortic Stenosis
The Transesophageal Echocardiography (TEE) criteria for diagnosing severe aortic stenosis typically include several parameters. The primary measurements used to evaluate the severity of aortic stenosis are:
- A peak aortic jet velocity greater than 4 meters per second (m/s) indicates severe stenosis.
- A mean transaortic gradient greater than 40 millimetres of mercury (mmHg), measured across the aortic valve, is associated with severe stenosis.
- An aortic valve area (AVA) of less than 1.0 square centimetre (cm²), or a valve area index of less than 0.6 cm²/m² when indexed to the patient's body surface area, suggests severe stenosis.
TEE also provides detailed images that can assess valve anatomy, calcification, and the impact of stenosis on left ventricular function. It's important for a healthcare professional to integrate these findings with clinical symptoms and other diagnostic tests to manage the condition appropriately.