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为研究室性期前收缩伴原发性ST-T改变的发生机制及临床意义,分析57例符合室性期前收缩伴原发性ST-T改变诊断标准的患者(Ⅰ组)的相关参数,并与58例无器质性心脏病证据的室性期前收缩患者(Ⅱ组)比较。Ⅰ组中25例视原发性ST-T改变持续存在与否作逐日自身前后对照分析。结果发现:室性期前收缩伴原发性ST-T改变100％见于器质性心脏病患者,其持续存在可预示进展到高Lown分级室性心律失常;室性期前收缩的QRS时间≥0.14a(小儿≥0.12s),伴钝挫或切迹,对判断器质性室性期前收缩的价值为100％。提示室性期前收缩伴原发性ST-T改变是心肌缺血受损加重所致,对早期诊断、治疗及预后判断均有一定的临床价值。
In order to study the mechanism and clinical significance of ventricular premature contractions with primary ST-T changes, 57 patients who met the criteria of pre-ventricular contractions with primary ST-T changes (group Ⅰ) , And compared with 58 patients with ventricular premature contractions without evidence of organic heart disease (group Ⅱ). Group Ⅰ in 25 cases depending on the persistence of primary ST-T changes or not for daily self-control before and after their own analysis. The results showed that ventricular premature contractions with primary ST-T changes of 100% were found in patients with structural heart disease, and its persistence may be predictive of progress to high Lown grade ventricular arrhythmias; ventricular premature contraction QRS time ≥ 0.14a (pediatric ≥ 0.12s), with blunt or notch, the value of judging organic ventricular premature contraction value of 100%. Prompt ventricular premature contractions with primary ST-T changes is caused by increased myocardial ischemia, the early diagnosis, treatment and prognosis have some clinical value.