Human activity is causing environmental degradation, which is the deterioration of the environment through depletion of resources such as air, water and soil; the destruction of ecosystems; habitat destruction; the extinction of wildlife; and pollution.
Screening for abdominal aortic aneurysm (AAA) Research studies suggest that a routine ultrasound scan is worthwhile for all men aged 65. This is because most people with an AAA do not have symptoms. Following a routine scan, surgery can be offered to men found to have an aneurysm over 5.5 cm wide.
Abdominal Aortic Ultrasound. An abdominal aortic ultrasound is a noninvasive exam that uses high-frequency sound waves to visually evaluate the aorta, the largest blood vessel in the body that carries blood away from the heart. This test determines if there are blockages, narrowing or aneurysm (an enlargement or a âbulgeâ) in the aorta.