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The document explains that these drugs work by blocking alpha receptors, leading to vasodilation and relaxation of smooth muscle in blood vessels, which is beneficial for treating hypertension. Specific uses include managing hypertension caused by pheochromocytoma and pre-operative preparation, as well as treating tissue damage from dopamine injection. Key nursing considerations are highlighted, such as monitoring vital signs during IV administration, instructing clients on managing orthostatic hypotension, and advising patients to report chest pain. Adverse effects discussed span the central nervous system (CNS), ears, eyes, nose, throat (EENT), cardiovascular system (CV), gastrointestinal system (GI), and dermatological system, with notable side effects including cerebrovascular spasm, hypotension, myocardial infarction, angina, arrhythmias, tachycardia, and abdominal pain. The document also details critical interactions, warning against concurrent use of epinephrine or methoxamine due to the risk of severe hypotension and noting that ephedrine or phenylephrine may decrease the pressor response. A nursing tip advises caution when administering other medications with alpha-adrenergic blockers if they cause hyperactive or shaky symptoms.","","cbCaiqTD6YqKIYyo","https://ap.wps.com/l/cbCaiqTD6YqKIYyo","pdf",592515,1,"English","en",105,"3. 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