47 下列具降壓作用及用於青光眼之藥物中,何者較不會引起氣管收縮之副作用?
(A) Betaxolol
(B) Levobunolol
(C) Nadolol
(D) Timolol
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統計: A(357), B(68), C(57), D(197), E(0) #413342
統計: A(357), B(68), C(57), D(197), E(0) #413342
詳解 (共 3 筆)
#3057224
Levobunolol
Nadolol
Timolol
都是非選擇性beta阻斷 會阻斷beta-2造成氣管收縮
Betaxolol 專一抑制beta1 比較不會造成氣管收縮
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0
#860051
Betaxolol (trade names Betoptic, Betoptic S, Lokren, Kerlone) is a selective beta1 receptor blocker used in the treatment of hypertension andglaucoma. Being selective for beta1 receptors, it typically has fewer systemic side effects than non-selective beta-blockers, for example, not causing bronchospasm (mediated by beta2 receptors) as timolol may. Betaxolol also shows greater affininty for beta1 receptors than metoprolol.
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2