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In the absence of compelling indications or contraindications, patients should take alpha blockers as a step 4 therapy to reduce blood pressure, but only if the use of ACE inhibitors, angiotensin-II receptor blockers, calcium channel blockers, or thazide diuretics (in full dose or in combinations) have not been efficacious.
Alpha 1 blockers cause vasodilation by relaxing smooth muscles that control blood vessel diameter, leading to lower blood pressure. [1] FDA-approved uses of these drugs include treating conditions like benign prostatic hyperplasia, hypertension, pheochromocytoma, extravasation management, and reversal of local anesthesia.
It was the first alpha blocker which was used for treating Benign Prostatic Hyperplasia. [22] Another Alpha Blocker Prazosin, which was the first drug selective to alpha 1 receptor, was developed in 1987 [22] for the therapy of Benign Prostatic Hyperplasia. Other alpha blockers are then introduced for several diseases. [22]
Alpha-1 blocker, blocks alpha receptors and it relaxes the smooth muscles in the bladder. It helps the urine to flow smoothly and it can lessen the pain caused by the bladder pressing on the prostate. [44] [45] Selective alpha-1 blockers are better tolerated than non-selective alpha blockers in the body and therefore works better on BPH. [2]
Heart failure may be worsened with nondihydropyridine calcium channel blockers, the alpha blocker doxazosin, and the alpha-2 agonists moxonidine and clonidine. On the other hand, β-blockers, diuretics, ACEis, ARBs, and aldosterone receptor antagonists have been shown to improve outcome. [67] Pregnancy. Although α-methyldopa is generally ...
Alpha-blockers, including prazosin, terazosin, doxazosin, or tamsulosin, do not appear to affect all-cause mortality in heart failure rehospitalization in those also receiving β-blockers. [23] Tamsulosin can also cause retrograde ejaculation, which occurs when semen is redirected to the urinary bladder instead of being ejaculated normally.
Beta-blockers with intrinsic sympathomimetic activity: acebutolol, pindolol; Some common side effects include increased airway resistance for non-selective beta-blockers, exacerbation of peripheral vascular diseases, and hypotension [15] Beta-blockers are contraindicated in patients with second- or third-degree atrioventricular block.
It has a slower onset and a longer-lasting effect compared with other alpha blockers. It was also the first alpha blocker to be used for treatment of benign prostatic hyperplasia, [2] although it is currently seldom used for that indication due to unfavourable side effects. It has been used in the treatment of hypoplastic left heart syndrome. [3]