哪類藥物通常被禁止用於氣喘病人？
Which medication category is typically contraindicated for a client with asthma?
- AStatins他汀類藥物
- BBeta-blockers✓ 正解乙型交感神經阻斷劑
- CCalcium channel blockers鈣離子通道阻斷劑
- DACE inhibitors血管張力素轉化酶抑制劑
氣喘（Asthma）病人應避免使用會導致支氣管收縮的藥物。乙型阻斷劑（Beta-blockers）主要分為非選擇性與選擇性。非選擇性 Beta-blockers（如 Propranolol）會同時阻斷 Beta-1（心臟）與 Beta-2（支氣管平滑肌）受體，導致支氣管痙攣，誘發急性氣喘發作。即使是選擇性 Beta-1 阻斷劑，在高劑量下也可能失去選擇性而影響肺部，因此氣喘病人使用時需極度謹慎或禁用。
Clients with asthma should avoid medications that cause bronchoconstriction. Beta-blockers are divided into non-selective and selective agents. Non-selective beta-blockers (such as propranolol) block both beta-1 (cardiac) and beta-2 (bronchial smooth muscle) receptors, leading to bronchospasm and triggering an acute asthma attack. Even selective beta-1 blockers can lose their selectivity at high doses and affect the lungs, so they must be used with extreme caution or avoided altogether in clients with asthma.