EFFECTS OF SURGERY FOR HYPERTROPHIC CARDIOMYOPATHY ON EXERCISE HEMODYNAMICS
EFFECTS OF SURGERY FOR HYPERTROPHIC CARDIOMYOPATHY ON EXERCISE HEMODYNAMICS
批准号:
3899262
负责人:
R O CANNON
金额:
$0.0万
依托单位国家:
美国
项目类别:
财政年份:
--
资助国家:
美国
项目状态:
未结题
起止时间:
至
中文摘要
梗阻性肥厚型心肌病(间隔)的外科治疗
肌切开术/肌切开术或二尖瓣置换术)改善了许多人的症状,
但并不是所有的肥厚型心肌病患者。来评估哪一项
手术前后血流动力学的变化与
14例肥厚症患者手术后运动受益
心肌病患者接受了平板运动试验(Bruce方案),
治疗前和治疗后6个月最大耗氧量的测定
做手术。术后锻炼研究显示锻炼效果有所改善。
持续时间,但最大含氧量仅略有改善
消费。术后最大耗氧量的改善
手术与术前研究结果直接相关。
左心室流出道流出道压差和左
室壁舒张末压力。5名患者的生活质量没有改善
最大耗氧量,包括2个大于50毫米汞梯度的
左室舒张末期减少小于5毫米汞柱
压力。9例术后最大值升高的患者中有7例
耗氧量有大于或等于65的梯度减少
毫米汞柱;梯度降低较小的2个大于8毫米汞柱
左室舒张末压降低。因此,受益于
手术后的运动能力可能与手术后的
左心室充盈压的降低幅度
手术后的坡度降低。
英文摘要
Surgery for obstructive hypertrophic cardiomyopathy (septal
myotomy/myectomy or mitral valve replacement) improves symptoms in many,
but not all patients with hypertrophic cardiomyopathy. To assess which
hemodynamic changes before and following surgery best correlate with
exercise benefit following surgery, 14 patients with hypertrophic
cardiomyopathy underwent treadmill exercise testing (Bruce protocol) with
measurement of maximum oxygen consumption before and 6 months following
surgery. The post-operative exercise study demonstrated improved exercise
duration but with only a marginal improvement in maximum oxygen
consumption. The improvement in maximum oxygen consumption following
surgery compared to the preoperative study correlated directly with the
magnitude of reduction in left ventricular outflow gradient and left
ventricular end-diastolic pressure. The 5 patients with no improvement in
maximum oxygen consumption, including 2 with greater than 50 mmHg gradient
reduction, had less than 5 mmhg reduction in left ventricular end-diastolic
pressure. Seven of the 9 patients with increased post-operative maximum
oxygen consumption had a gradient reduction greater than or equal to 65
mmhg; the 2 with lesser gradient reduction had greater than 8 mmhg
reduction in left ventricular end-diastolic pressure. Thus, benefit in
exercise capacity following surgery may be determined as much by the
reduction in the left ventricular filling pressures as by the magnitude of
gradient reduction following surgery.
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会议论文
EFFECT OF SURGICAL RELIEF OF OBSTRUCTION IN HYPERTROPHIC CARDIOMYOPATHY
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批准号:4694686
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项目类别:
-
资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
HORMONE THERAPY AND INFLAMMATORY CELL ADHESION MOLECULES
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批准号:6109271
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项目类别:
-
资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
ABNORMAL ESOPHAGEAL MOTILITY IN PATIENTS WITH LIMITED CORONARY FLOW RESERVE
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批准号:3966721
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
DETRIMENTAL EFFECT OF ERGONOVINE IN HYPERTROPHIC CARDIOMYOPATHY
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批准号:4694671
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项目类别:
-
资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
SYSTEMIC VASCULAR EFFECTS OF 17 BETA-ESTRADIOL IN POSTMENOPAUSAL WOMEN
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批准号:3757704
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项目类别:
-
资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
ANTIOXIDANT VITAMINS, LIPOPROTEIN OXIDATION & VASOMOTION IN HYPERCHOLESTEROLEMIA
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批准号:3757713
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
HYPERINSULINEMIA IN PATIENTS WITH CHEST PAIN AND NORMAL CORONARY ARTERIES
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批准号:3858136
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
MYOCARDIAL ISCHEMIA AND HYPERTROPHIC CARDIOMYOPATHY
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批准号:3858114
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
CORONARY FLOW RESERVE AND ABNORMAL LEFT VENTRICULAR RESPONSE TO EXERCISE
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批准号:3843398
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
ABNORMAL BRONCHIAL AIRWAY FUNCTION IN PATIENTS WITH MICROVASCULAR ANGINA
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批准号:3920210
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
EFFECT OF LIDOFLAZINE ON EXERCISE TOLERANCE IN MICROVASCULAR ANGINA
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批准号:3942959
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
EFFECT OF SURGICAL RELIEF OF OBSTRUCTION IN HYPERTROPHIC CARDIOMYOPATHY
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批准号:3942929
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
EFFECT OF LIDOFLAZINE ON CORONARY FLOW RESERVE
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批准号:3942960
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
CORONARY FLOW RESERVE IN DILATED CARDIOMYOPATHY
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批准号:3942931
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
"FALSE POSITIVE" RADIONUCLIDE ANGIOGRAPHIC STUDIES IN WOMEN WITH CHEST PAIN
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批准号:3843397
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
ESTROGEN AND VITAMIN E EFFECTS ON LIPOPROTEIN OXIDATION IN POSTMENOPAUSAL WOMEN
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批准号:3757714
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
DETRIMENTAL EFFECT OF ERGONOVINE IN HYPERTROPHIC CARDIOMYOPATHY
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批准号:3966699
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项目类别:
-
资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
SUPRAVENTRICULAR TACHYCARDIA AND SYNCOPE IN HYPERTROPIC CARDIOMYOPATHY
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批准号:3966725
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
CORONARY FLOW RESERVE ARE AFTER DIPYRIDAMOLE
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批准号:4694684
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位:
INVESTIGATION OF MYOCARDIAL ISCHEMIA IN HYPERTROPHIC CARDIOMYOPATHY
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批准号:4694685
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项目类别:
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资助金额:$0.0万
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财政年份:--
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负责人:R O CANNON
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依托单位: