Iibet blockers zisebenzise ezininzi kwiyeza. Enye yeyona nto ibaluleke kakhulu kunyango lwezigulane ezinezifo zengxowankulu (CAD) kunye ne-angina.
I-Beta Blockers izuza njani izigulane kunye no-Angina?
Kwizigulane ezine- angina ezizinzile ezibangelwa yi-CAD, i-beta blockers ithathwa njengonyango lokuqala.
Kwi-angina enesigxina, enye okanye ngaphezulu yamarriyari ye-coronary ivinjiwe ngenxalenye ye- atherosclerotic plaque .
Ngokuqhelekileyo, isisu senhliziyo esinikezwa ngumthi wesifo sifumana ukuhamba okwaneleyo ngexesha lokuphumla. Kodwa ngexesha lokuzivocavoca okanye ixesha lokuxinezeleka, ukukhutshwa ngokukhawuleza kuthintela ukuhamba kwegazi ukunyuka ngokwaneleyo ukubonelela i-oksijini efunekayo kwisisu senhliziyo esisebenzayo, kwaye imisipha iba yinchemic (ilambile i-oxygen). Ngenxa yoko, i-angina ivela.
B block blockers basebenze ngokuthintela umphumo we-adrenaline entliziyweni. Oku kunemiphumo emibili enenzuzo kwizigulane ezine-angina:
- Ukuphungulwa kwentlawulo yenhliziyo, ngakumbi ngexesha lokusebenzisa okanye uxinzelelo.
- Ukunciphisa amandla entambo ye-muscle contraction.
Zomibini kwezi ziphumo zinciphisa umlinganiselo we-oksijini efunekayo ngentliziyo ye-muscle, kunye ne-ischemia (kunye ne-angina) zilibale okanye zithintelwe ngenxa yoko.
Iyintoni Impembelelo yeBeta Blockers Kwiziguli ezine-Angina?
Kwizigulane ezine-angina, i-beta blockers zihlala ziphumelela kakhulu ekuphuculeni ubukhulu okanye ixesha lokuzilolonga ezingenziwa ngaphandle kokuphuhlisa i-ischemia okanye i-angina.
Izigulane ezinezintsimbi ezizinzileyo ezithatha i-beta blockers zivame ukuba nama-episodes of angina kwaye kufuneka athathe i-nitroglycerin kaninzi.
Ukongezelela, kwizigulane ezine-angina ezine- infyoction ye-myocardial . (ukuhlaselwa kwintliziyo), i-beta blockers yiyo kuphela iziyobisi ezichasene ne-angina eziye zaboniswa ukunciphisa umngcipheko wokuba ne-infarction enye ye-myocardial.
Ukongezelela koko, kwiintsholongwane ze-myocardial infarction, okanye kwizigulane ezinentliziyo engaphumeleliyo kwongezwa kwi-angina ezinzile, i-beta blockers iboniswe ukuba iphucule ngokubanzi uphila jikelele.
Iingenelo ezibonelelwe ngabagcini be-beta zenze izidakamizwa zokukhetha okokuqala ekuphatheni izigulane ezine-CAD kunye ne-angina ezinzile.
Imiphumo emibi yeBeta Blockers
Iziphumo eziphambili ze-beta blockers ziquka i-bradycardia (izinga lentliziyo elincinci), ubunzima bokuphefumula kubantu abane-asthma okanye isifo esingapheliyo sesifo samaphaphu, ukukhathala, ukuphazamiseka kweempawu zesifo se- artery , ukuxinezeleka, kunye nokusebenza kakubi kwe-erectile . I-Beta blockers kufuneka igwenywe kwizigulane ezine-angina ngenxa ye- Prinzmetal's angina (i-coronary artery spasm) , ekubeni ezi zigulana zikhupha i-beta zibanokuthi zenze i-spasm.
Uninzi lweziphumo ezisecaleni zingagwenywa kwizigulane ezine-angina ngokusebenzisa i-beta blockers esebenza ngokuyinhloko entliziyweni ngokwayo, kwaye ayinomphumo omncinci kwimithambo yegazi, imiphunga kunye nenkqubo yesantya ephakathi. Ezi "blodioselective" beta bloers are Tenormin (i-atenolol) kunye ne-metoprolol (Lopressor, iTrolrol XL).
> Umthombo:
> Fihn SD, Gardin JM, Abrams J, et al. I-ACCF / AHA / ACP / AATS / PCNA / SCAI / STS Isikhokelo soLwazi kunye nokuLawula izigulane ezinezifo ezinengqondo ze-Ischemic Heart: Ingxelo ye-American College of Cardiology Foundation / i-American Heart Association iqela leMigaqo yeZenzo, kunye Ikholeji yaseMerika yeeNgcali, i-American Association ye-Thoracic Surgery, i-Preventive Cardiovascular Association Association, i-Society for Cardiovascular Angiography kunye neNongenelo, kunye noMbutho weeNgcali zeTriracic. Ukuhamba ngo-2012; 126: e354.