Abdominal ultrasound is a type of imaging test. It is used to look at organs in the abdomen, including the liver, gallbladder, spleen, pancreas, and kidneys. The blood vessels that lead to some of these organs, such as the inferior vena cava and aorta, can also be examined with ultrasound.
Carotid (kaROTid) ultrasound is a painless and harmless test that uses high-frequency sound waves to create pictures of the insides of your carotid arteries. You have two common carotid arteries, one on each side of your neck. They each divide into internal and external carotid arteries. The internal carotid arteries supply oxygenrich blood to your brain. The external carotid arteries supply oxygenrich blood to your face, scalp, and neck.
- Abnormalities in the hormones that control blood pressure.
- The accumulation of artery-clogging plaque in blood vessels that nourish the kidneys, a condition called renal artery stenosis. Opening the blocked arteries with balloon angioplasty often improves blood pressure.
- Sleep problems, such as the breath-holding type of snoring known as obstructive sleep apnea, can affect blood pressure.
- Obesity, heavy alcohol intake and other substances can interfere with high blood pressure and cause RH.
Some patients might seem to have RH based on their blood pressure measurements taken in a doctor’s office or hospital, but are actually controlled when measured outside those settings. This is often called the “white-coat” effect. This could lead to unnecessary increases in dose or number of antihypertensive medications. Devices that take several blood pressure measurements automatically at preprogrammed intervals, without an observer present, may be useful to mitigate the white-coat effect.