异舒吉对不稳定心绞痛患者氧自由基和血液流变学的影响

目的 探讨异舒吉防治心脑血管病机理。方法 观察异舒吉对30例不稳定心绞痛患者氧自由基和血液流变学影响,并与用硝酸甘油治疗的30例作对照。结果 异舒吉能增加血清超氧化物化酶活性和前列腺素含量,显著降低丙二醛、血栓素B2水平,降低全血比粘度、血浆比粘度和血浆纤维蛋白原水平,其药理效应优于硝酸甘油。结论 异舒吉有抗氧化作用,消除自由基,改善血液流变学作用。     

合心爽,硝酸甘油治疗不稳定型心绞痛对比研究

目的 比较用硝酸甘油和合心爽治疗９８例不稳定型心绞痛的疗效。方法 随机分组,分别静滴合心爽和硝酸甘油,以难治性心绞痛、心肌梗塞或缺血性猝死为治疗终点。结果 发展为难治性心绞痛或心肌梗塞病例在合心爽组为５人,硝酸甘油组为１１人,发生心肌梗塞者合心爽组３人,硝酸甘油８人,缺血性猝死者合合爽组无,硝酸甘油组１人。结论 静脉用合心爽治疗不稳定型心绞痛疗效优于硝酸甘油（Ｐ〈０．００１）。     

葛根素治疗52例冠心病心绞痛疗效观察

目的：探讨冠心病心绞痛药物治疗的效果。方法：将１０４例冠心病心绞痛患者随机分成两组：Ａ组选用葛根素注射液５００ｍｇ加入５％葡萄糖５００ｍｌ静脉滴注治疗,Ｂ组采用镁－极化液５００ｍｌ静脉滴注,１次／ｄ,１４ｄ为１个观察疗程。结果：缓解心绞痛症状,Ａ组总有效率达８４．６％,与Ｂ组总有效率４２．３％相比较有非常显著差异（Ｐ〈０．０１）心肌缺血改善后心电图评定,Ａ组总有效率６９．２３％,与Ｂ组总有效率３４     

低分子肝素治疗老年人不稳定型心绞痛的疗效分析

目的 观察低分子肝素治疗老年人不稳定型心绞痛的疗效。方法 将１０１例不稳定型心绞痛患者随机分为Ａ、Ｂ两组。在常规治疗基础上Ａ组给予低分子肝素腹部皮下注射;Ｂ组给予等量生理盐水皮下注射。结果 Ａ组心绞痛发作频率比Ｂ组明显减少（Ｐ〈０．０１）。心电图ＳＴ段及Ｔ波较对照组明显改善。Ａ组总有效率９０％,Ｂ组总有效率５４％（Ｐ〈０．０１）。Ａ、Ｂ组治疗期间均未见出血等副作用。结论 低分子肝素治疗老年人不稳定     

SERUM LEVELS OF VASCULAR ENDOTHELIAL GROWTH FACTOR IN PATIENTS WITH ANGINA PECTORIS AND ACUTE MYOCARDIAL INFARCTION

ＩＮＴＲＯＤＵＣＴＩＯＮ　　Ｖａｓｃｕｌａｒｅｎｄｏｔｈｅｌｉａｌｇｒｏｗｔｈｆａｃｔｏｒ (ＶＥＧＦ)ｏｒｖａｓｃｕｌａｒｐｅｒｍｅａｂｉｌｉｔｙｆａｃｔｏｒ (ＶＰＦ)ｃｏｎｓｉｓｔｓｏｆａｆａｍｉｌｙｏｆｐｏｌｙｐｅｐｔｉｄｅｉｓｏｆｏｒｍｓｔｈａｔｓｐｅｃｉｆｉｃａｌｌｙｒｅｇｕｌａｔｅｅｎｄｏｔｈｅｌｉａｌｃｅｌｌｆｕｎｃｔｉｏｎ ,ｉｎｃｌｕｄｉｎｇｅｎｈａｎｃｅｍｅｎｔｏｆａｎｇｉｏｇｅｎｅｓｉｓ( 1) ,ｅｎｈａｎｃｅｍｅｎｔｏｆｍｉｃｒｏｖａｓｃｕｌａｒｐｅｒｍｅａｂｉｌｉｔｙ ( 2 ) ,ａｎ…     

速避凝治疗不稳定性心绞痛的临床观察

目的 评价速避凝治疗不稳定性心绞痛（ＵＡ）的临床疗效。方法 将筛选的８０例ＵＡ患者随机分成治疗组（４０例,皮下注射速避凝注射剂）和对照组（４０例,静点前列腺素Ｅ１注射剂）。治疗期间两组均不用其他除脂、降压及血管扩张剂。心绞痛发作程度较重且频繁时,可临时给硝酸甘油片舌下含化,并做记录。结果 治疗后心绞痛发作情况及心电图改变两组对照经ｔ检验,差异有显著性至非常显著性。治疗组总有效率为８５％,对照组总有     

Additional value of thallium-201 SPECT to a conventional exercise test for the identification of severe coronary lesions after an episode of unstable coronary artery disease

The additional value of thallium-201 SPECT to a conventional exercise test for the identification of patients with severe coronary lesions was evaluated in 170 men, one month after an episode of unstable coronary artery disease. Severe coronary lesions at coronary angiography — defined as three vessel disease, left main stenosis or proximal left anterior descending artery stenosis as part of two vessel disease — were observed in 45.9%. In the SPECT image, the left ventricular myocardium was divided into nine segments and each segment was classified as either normal (=0), reduced uptake (=1) or uptake defect (=2). The sum of gradings in all segments post-exercise was denoted SPECT score. The patients were divided into nine different groups regarding ST-depression during exercise (no ST-depression, ST-depression in 1–2 leads or 3 leads) and SPECT score (no SPECT score, 1–3 scores or 4 scores). Severe coronary lesions were, in 68% identified by SPECT score 4 and in 65% by ST-depression in 1 lead at exercise test. The specificity for identification of severe coronary lesions was, for both tests, 65%. SPECT score 4 and/or ST-depression in 3 leads identified 82% of the patients with severe coronary lesions with a specificity of 63%. Furthermore, SPECT score 3 identified more patients with isolated proximal left anterior descending artery stenosis than ST-depression alone at exercise test.     

Optimizing the treatment of unstable angina

Unstable angina and non-Q-wave myocardial infarction (MI) are at the center of the spectrum of myocardial ischemia, which ranges from stable angina to acute Q-wave MI. In addition to clinical evaluation, cardiac specific markers such as troponin T or I can assist in early diagnosis, triage, and risk stratification. Antithrombotic therapy with aspirin and heparin have been shown to improve the outcome of patients with acute ischemic syndromes. Thrombolytic therapy does not appear to be beneficial in these syndromes. Antiischemic therapy remains an important component of the overall therapy. A strategy of early coronary angiography and revascularization leads to a similar long-term outcome as compared with a more conservative strategy of revascularization for recurrent ischemia, but the early invasive strategy is more expeditious as a large number of conservatively treated patients have recurrent ischemia. At present, many new antithrombotic agents are under active investigation, with the hope that they will lead to further improvement in the clinical outcome of patients with acute ischemic syndromes.     

Venous plasma levels of endothelin-1 are not altered immediately after nitroglycerin infusion in healthy subjects

Endothelin-1 and nitric oxide play an important regulatory role in the control of vascular smooth muscle tone. Nitroglycerin (NTG), a nitric oxide donating drug, may inhibit endothelin production. In this double-blind placebo-controlled crossover study, plasma levels of endothelin-1 were measured before and immediately (5–30 s) after 80 min infusion of NTG (glyceryl trinitrate) or saline in 12 healthy subjects. On two different days separated by at least 1 week, NTG in four different doses, 0.015, 0.25, 1.0, and 2.0 g·kg^–1·min^–1, or placebo (isotonic saline) was infused successively for 20 min each dose. During the infusion blood pressure and heart rate were measured. NTG infusion significantly decreased systolic blood pressure from 112.4 to 103.4 mmHg and pulse pressure from 39.3 to 29.5 mmHg. Heart rate increased from 62.7 to 73.1 beats·min^–1. No changes in endothelin-1 plasma levels were induced by NTG infusion (2.4 pg·ml^–1 before NTG vs. 2.7 pg·ml^–1 after NTG) and placebo infusion also did not affect plasma endothelin-1. It is concluded that venous plasma levels of endothelin-1 are not altered immediately after NTG infusion.     

血清铁蛋白,血清铁与冠心病及其有关危险因素关系的临床研究

目的：研究血清铁蛋白（ＳＦ）、血清铁（ＳＩ）与冠心病（ＣＨＤ） 之间的关系以及ＳＦ、ＳＩ与ＣＨＤ有关危险因素的相关关系。方法：测定４３ 例心肌梗塞（ＭＩ）,４４ 例心绞痛（ＡＰ） 患者的ＳＦ、ＳＩ、血脂、血糖（ＢＧ）、血压、腰臀比（ＷＨＲ） 、体重指数（ＢＷＩ）水平,与４０ 例健康对照组进行分析。结果：ＡＰ组、ＭＩ组男、女、总体ＳＦ水平分别明显高于对照组（Ｐ＜ ０．０５～０．００１）,但女性升高不如男性明显;ＳＦ水平与ＷＨＲ、甘油三脂（ＴＧ）、低密度脂蛋白（ＬＤＬ）呈正相关（ｒ＝ ０．４６,０．３４,０．４４）,与高密度脂蛋白（ＨＤＬ）呈负相关（ｒ＝ － ０．３３）。结论：体内ＳＦ增加是ＡＰ、ＭＩ的主要易发因素之一;ＳＦ水平受营养因素特别是某些脂代谢及腹部脂肪分布的影响