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41.
《Heart & lung : the journal of critical care》2014,43(6):500-505
IntroductionIn patients with recent myocardial infarction (MI) limited exercise capacity during physical activity is an important symptom and the base for future treatment. The myocardial injury after MI leads to both systolic and diastolic left ventricular (LV) dysfunction.ObjectiveThe aim of this study was to assess the relevance of systolic and diastolic LV function for cardiopulmonary exercise capacity in patients with prior MI.MethodsSixty-five consecutive patients after first MI without signs and symptoms of heart failure, aged 52 ± 6 years, were included in the study. The following echo parameters were evaluated: LV ejection fraction (LVEF), peak early and late diastolic velocities (E, A), deceleration time of E wave (dec t E), ratio of early trans-mitral to early annular diastolic velocities (E/e′), velocity propagation of early filling (Vp), and diameters and volumes of LV and left atrium (LA). CPET variables included: oxygen uptake at peak exercise (peak VO2), oxygen pulse (VO2 HR), VE/VCO2 slope, circulatory power (CP) and recovery half time (T1/2).ResultsSignificant correlations were demonstrated between peak VO2 and E/e’ (p < 0.001), peak VO2 and dec t E (p < 0.001), VO2 HR and E/e′ (p = 0.002) and between VE/VCO2 and E/e′ (p < 0.001). Twenty patients with elevated LV filling pressure achieved significantly lower peak VO2 (1624 vs. 1932 ml, p = 0.027) VO2 HR (11.70 vs. 14.05, p = 0.011) and CP (287,073 vs. 361,719, p = 0.014). By using multivariate regression model we found that only E/e′ (p = 0.001) and dec t E (p = 0.008) significantly contributed to peak VO2.ConclusionsDiastolic dysfunction, particularly LV filling pressure, determine exercise capacity, despite differences in LV ejection fraction in patients with prior MI. 相似文献
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Kamlesh Khunti Hyejung Jung Antonio L. Dans Claes Held Gilles R. Dagenais Salim Yusuf Eva Lonn 《The Canadian journal of cardiology》2019,35(5):644-652
Background
Cardiovascular disease risk assessment tools help identify individuals likely to benefit from preventative therapies. In this study we compared outcomes using the American College of Cardiology/American Heart Association (ACC/AHA) risk algorithm and the Framingham Risk Score (FRS) tool in the Heart Outcomes Prevention Evaluation (HOPE)-3 study.Methods
We compared outcomes using the ACC/AHA algorithm and the FRS with those seen in HOPE-3, which randomized participants to 10 mg rosuvastatin or placebo. The first coprimary outcome was the composite of death from cardiovascular causes, nonfatal myocardial infarction, or nonfatal stroke; second coprimary outcome additionally included heart failure, cardiac arrest, and revascularization.Results
Relative risks using risk scores were similar to those observed in the HOPE-3. Hazards ratios for the first coprimary outcome according to risk categories of ≤ 10%, 10%-20%, and ≥ 20% using the ACC/AHA algorithm were 0.82 (95% confidence interval [CI], 0.53-1.28), 0.72 (95% CI, 0.53-0.96), and 0.72 (95% CI, 0.55-0.93), and absolute risk reduction (ARR) of 0.18%, 1.33%, and 1.85%, respectively, over a median of 5.6 years. Corresponding results using the FRS were 0.69 (95% CI, 0.36-1.35), 0.73 (95% CI, 0.52-1.01), and 0.75 (95% CI, 0.60- 0.94); and ARR of 1.32%, 0.61%, and 1.43%. Hazard ratios for the second coprimary outcome were 0.77 (95% CI, 0.51-1.14), 0.73 (95% CI, 0.56-0.95), and 0.74 (95% CI, 0.58-0.94); and ARR of 0.36%, 1.49%, and 1.85%, using the ACC/AHA algorithm and 0.76 (95% CI, 0.41-1.41), 0.70 (95% CI, 0.52-0.95), and 0.76 (95% CI, 0.62-0.94); and ARR of 1.08%, 0.83%, and 1.56% using the FRS.Conclusions
The pragmatic HOPE-3 trial approach identifies in an ethnically diverse primary prevention population individuals at intermediate risk who benefit from statin therapy using simple clinical characteristics without the need for complex, currently used risk assessment tools. 相似文献46.
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目的观察PW鞘联合钬激光输尿管镜治疗尿道狭窄患者的临床疗效。方法将我院收治的60例尿道狭窄患者按照治疗方法分为治疗组35例与对照组25例,治疗组进行PW鞘联合钬激光输尿管镜治疗,对照组单纯应用钬激光输尿管镜治疗,对比两组的治疗效果。结果治疗组患者术中手术视野均表现清晰,组织分辨确切,无一例终止手术,而对照组有2例患者手术出血较多,视野与组织分辨模糊,被迫终止手术,3例因手术视野欠清晰,误切穿尿道海绵体;治疗组的手术时间、术后尿道扩张次数、术后最大尿流率、再手术率以及手术复发率等均显著优于对照组(均P〈0.05)。结论采用PW鞘联合钬激光输尿管镜治疗尿道狭窄,能改善手术视野与组织分辨情况,组织损伤小,增加了手术安全性,降低了术后手术复发率及再手术率,临床效果显著。 相似文献
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Anthony Booker Debora Frommenwiler Deborah Johnston Chinenye Umealajekwu Eike Reich Michael Heinrich 《Journal of ethnopharmacology》2014