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Propranolol may cause harmful effects for the baby if taken during pregnancy; [7] however, its use during breastfeeding is generally considered to be safe. [8] It is a non-selective beta blocker which works by blocking β-adrenergic receptors. [2] Propranolol was patented in 1962 and approved for medical use in 1964. [9]
[31] [32] In any subsequent pregnancy, careful monitoring is necessary. A stress test or echocardiogram should be complete prior to a subsequent pregnancy. Where relapse occurs, conventional treatment should be resumed, including hydralazine with nitrates plus beta-blockers during pregnancy, or ACE-inhibitors plus beta-blockers following pregnancy.
Betaxolol is most commonly ingested orally alone or with other medications for the management of essential hypertension. [4] It is a cardioselective beta blocker, targeting beta-1 adrenergic receptors found in the cardiac muscle.
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.
There is no clear first-line tocolytic agent. [6] [7] Current evidence suggests that first line treatment with β 2 agonists, calcium channel blockers, or NSAIDs to prolong pregnancy for up to 48 hours is the best course of action to allow time for glucocorticoid administration.
It is a beta blocker, specifically a selective β 1 receptor blocker, and is taken by mouth or is given intravenously. [4] Common side effects include trouble sleeping, feeling tired, feeling faint, and abdominal discomfort. [4] Large doses may cause serious toxicity. [5] [6] Risk in pregnancy has not been ruled out.
Labetalol is often classified as a beta blocker with low lipophilicity and hence lower potential for crossing the blood–brain barrier and blood–placenta barrier. [ 17 ] [ 29 ] [ 30 ] This in turn may result in fewer effects in the central nervous system as well as a lower risk of neuropsychiatric side effects. [ 17 ]
Beta blockers interfere with the binding to the receptor of epinephrine and other stress hormones and thereby weaken the effects of stress hormones. Some beta blockers block activation of all types of β-adrenergic receptors and others are selective for one of the three known types of beta receptors, designated β 1, β 2 and β 3 receptors.