Prinzmetalâs angina is rare, representing about two out of 100 cases of angina, and usually occurs in younger patients than those who have other kinds of angina. Causes of Variant (Prinzmetal) Angina: The pain from variant angina is caused by a spasm in the coronary arteries (which supply blood to the heart muscle).The coronary arteries can spasm as a result of: Symptoms of Variant (Prinzmetal) Angina: The pain or discomfort:rinzmetalâs angina is rare, representing about two out of 100 cases of angina, and usually occurs in younger patients than those who have other kinds of angina. Causes of Variant (Prinzmetal) Angina: The pain from variant angina is caused by a spasm in the coronary arteries (which supply blood to the heart muscle).
Adult dragonflies mostly eat other flying insects, particularly midges and mosquitoes. They also will take butterflies, moths and smaller dragonflies. The larvae, which live in water, eat almost any living thing smaller than themselves. Larger dragonfly larvae sometimes eat small fish or fry.
Jerboas eat beetles, ladybugs, dragonflies, grasshoppers, flies and  fireflies. They eat flying insects as they can detect them by using  sound; they then use their long leg â¦ s to leap into the air and catch  them in mid-flight. 2 people found this useful.