Acute myocardial infarction morphine Notes

More morphine for the treatment of acute myocardial infarction in the rescue. Is the lifting of myocardial infarction pain the most effective drugs, in addition to its role in central analgesic effect, can still block the central sympathetic impulse came out, so that the peripheral arteries and veins expansion, thereby reducing the heart before and after the load, reducing myocardial oxygen consumption and ease Pain, eliminate anxiety, but also reduce the blood circulation around the catecholamine content so that the decline in the incidence of arrhythmia. General subcutaneous injection of 5 ~ 10 mg, can also be small dose of 2 ~ 5 mg intravenous injection, if necessary, 5 to 30 minutes to repeat. But the side effects of morphine can not be ignored. Morphine can lead to hypotension and bradycardia. Raise the lower extremities, rehydration and application of atropine to correct these side effects. Morphine inhibited breathing, increasing the role of hypoxia in a chronic lung disease in patients with the more obvious. But for serious pulmonary edema and chest pain in patients with a rare respiratory depression, severe ischemia because of chest discomfort or pulmonary edema will cause sympathetic excitement. In case of respiratory depression, can be used against naloxone, 0.4 mg intravenous injection every three minutes maximum of administration three times the total ≤ 1.2 mg.