Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
An increase in cardiac sympathetic activity can enhance coronary vasomotor tone and lower the ventricular fibrillation threshold. We compared the transcardiac l-norepinephrine responses during cold pressor test of 20 patients with normal coronary arteries with those of 23 patients with obstructive