Different prognostic association of systolic blood pressure at different time points with postdischarge events in patients hospitalized for decompensated heart failure

Background The association of systolic blood pressure(SBP) with mortality in heart failure(HF) patients is paradoxical, and the time points of baseline SBP are also different across prior studies. We hypothesized that the levels of SBP at admission and at discharge had different associations with postdischarge events. Methods The study population included patients hospitalized for decompensated HF in the Heart Failure Center of Fuwai Hospital from January 1, 2009 to December 31, 2014. The primary outcome was a composite of cardiovascular(CV) death and heart transplantation. Multivariate Cox proportional-hazards and restricted cubic spline analyses were used to assess the relationships between SBP at different time points and outcomes. Results In total, 2005 patients were included with a median follow-up of 48.4 months. The median age was 59 years, and 69.9% were male. Multivariate Cox analyses showed that compared with SBP < 105 mm Hg, higher SBP at admission was associated with better long-term primary outcome(105–119 mm Hg, HR = 0.764, P = 0.005;120-134 mm Hg, HR = 0.658, P < 0.001;≥ 135 mm Hg, HR = 0.657, P = 0.001). Patients whose discharge SBP was higher than 135 mm Hg had a similar primary outcome as those with SBP < 105 mm Hg(HR = 0.969, P = 0.867), and the results remained unchanged even after adjusting for admission SBP(HR = 1.235, P = 0.291). The results of restricted cubic spline analysis indicated similar associations. Conclusions Lower but not higher SBP at admission is associated with more CV deaths/heart transplantations(a reverse J-shaped curve). In contrast, there is a U-shaped association between discharge SBP and CV mortality/heart transplantation.

A very high frequency index of heart rate variability for evaluation of left ventricular systolic function and prognosis in chronic heart failure patients using five-minute electrocardiogram

Objective A novel index based on fi-equency-domain analysis of heart rate variability （HRV） was tested on patients with reduced left ventricular systolic function. This index, namely VHFI, was defined as the very high frequency （VHF） component of the power spectrum normalized to represent its relative value in proportion to the total power minus the very low frequency component. Methods Patients （n = 130） were divided into a study group, consisting 66 patients with decreased left ventricular systolic function, and a control group, consisting 64 patients with normal heart structure and function and without severe coronary artery stenosis （〈 50%）. Results VHFI in the study group was significantly higher than that in the control group （19.17 ± 13.35 vs 11.37 ± 10.77, P 〈 0.001）. Cardiac events occurred in 18 patients during follow-up （33.34 i 3.26 months）. Defining the positive test as VHFI =15 and negative test as VHFI 〈15, achieved a sensitivity of 57.58% and a specificity of78.13% for predicting decreased left ventricular systolic function, and achieved a sensitivity of 66.67% and a specificity of 64.29% for predicting cardiac events. Univariate Cox regression analysis showed that positive VHFI test was an independent variable in predictive cardiac events. Conclusions The results suggest that VHFI is a useful tool for quick evaluation of left ventricular systolic function and prediction of prognosis

Left ventricular systolic function assessment in patients with dilated heart failure using cardiovascular magnetic resonance

Cardiovascular magnetic resonance (CMR) has become a reference standard for the measure-ment of cardiac volumes, function, and mass. This study aims to reconstruct three dimen-sional modeling of the left ventricle (LV) in pa-tients with heart failure (HF) using CMRtools and thereby derive the LV functional indices. CMR images were acquired in 41 subjects (6 females) with heart failure (HF) and 12 normal controls (4 females). Five comparisons were made (i) nor-mal and dilated heart failure subjects, (ii) male and female normal heart, (iii) male and female dilated heart, (iv) male normal and dilated heart failure and (v) female normal and dilated heart failure. In HF, a significant higher values of EDV (320 刡 79 vs. 126 刡 22 ml, P&amp;amp;amp;amp;amp;lt;0.0001), ESV (255 刡 68 vs. 54 刡 12 ml, P&amp;amp;amp;amp;amp;lt;0.00001) and lower values of EF (20 刡 7 vs. 58 刡 5 %) were found compared that of normal control. There were significant difference on LV EDV and ESV between sex in both normal and HF subjects.

Prevalence of Atrial Fibrillation in Systolic Heart Failure, Pulsed and Tissue Doppler Echocardiographic Abnormalities

Background: Heart failure (HF) is a common clinical syndrome mostly due to the impaired ability of the Left Ventricle (LV) to eject blood with reduced cardiac output. Heart failure is called systolic (SHF) if left ventricle ejection fraction on echo-cardiogram is low (LVEF of ≤50%). Aim: To assess the echocardiographic characteristics of patients with SHF with Atrial Fibrillation (AF) and compare with those with Sinus Rhythm (SR) on 12 leads ECG. Furthermore, to evaluate the clinical and biochemical markers for the prediction of AF in SHF. Method: Over two years duration, each patient diagnosed with SHF was enrolled in the study (n = 354) based on admission code. AF or sinus rhythm on 12 leads ECG was documented on each patient. Multiple logistic regression analysis was applied to assess the risk ratio of different clinical and Doppler derived variables for the development of AF in SHF. Results: Out of the total hospital medical admissions of 14,674 patients, there were 354 patients with diagnosis of SHF, a prevalence of 2.4%. The incidence of AF on ECG was 109 (31%) patients in the whole study population and 245 (69%) in SR. M Mode echocardiogram in patients with SHF and AF compared with those in SR showed significant dilation of LV cavity in systole with LVESD of 5.72 ± 0.63 vs. 5.23 ± 0.76 cm, P < 0.001 and in Diastole LVEDD of 6.83 ± 0.51 vs. 6.58 ± 0.63 cm, P < 0.001. Pulsed Doppler echocardiogram showed a severe restrictive-pattern with shorter Decellration Time (DT) of 163.73 ± 7.42 vs. 214.9 ± 31.81msec, P < 0.001 and higher Pulse to Tissue Doppler ratio of E/Em of 14.26 ± 1.34 vs. 9.99 ± 1.27, P , and the serum level of Brain Natriuretic Peptide (BNP) hormone of 723.72 ± 13.45 vs. 686.98 ± 72.57 pg/ml, P < 0.001. The predictive risks (odd ratio) of different clinical variables for the development of AF in SHF were positive for high BNP > 500 pg/ml of 2.8, history of hypertension of 1.8, history of DM of 1.7, BMI > 28 of 1.4, LV hypertrophy on ECG of 1.3. Conclusions: The prevalence of Systolic Heart Failure in the study population was 2.4%. The prevalence of AF in the study population was 31%. The best predictors of AF in SHF were high BNP > 500 pg/ml, history of hypertension, Diabete Mellitus and LV Hypertrophy on ECG.

Doppler Tissue Imaging Assessment of Left Ventricular Systolic Dyssynchrony in Severe Heart Failure Patients With a Normal QRS Duration

Objectives To assess the prevalence of systolic dyssynchrony of the left ventricular （LV） walls in patients of heart failure（HF） with a normal QRS duration by Doppler tissue imaging （DTI）. Methods 20 patients of HF with a normal QRS duration and 20 healthy individuals were investigated with DTI to quantitatively analyze their pulsed-wave Doppler spectrum of basal and middle segments in six walls of left ventricle. The time between the onset of the QRS complex of the surface ECG and the onset of the systolic wave of pulsed-wave Doppler spectrum was measured （TS）. LV systolic synchronization was assessed by the maximal difference （MD） in time of TS, the standard deviation （SD） and the coefficient of variation （CV） of TS in the all 12 LV segments. Results When a TS-MD of TS〉 53.08 ms, a TS-SD of TS 〉18.08 ms and a TS-CV of TS 〉 0.91 （＋1.65 SD of normal controls） was used to define significant systolic dyssynchrony, the prevalence of systolic dyssynchrony was 55.0 %, 55.0 % and 55.0 %, respectively, in the HF patients group, significantly higher than those in the normal control and the locations of delayed contraction of these patients were different. Conclusions LV systolic dyssynchrony could be commonly demonstrated by DTI in HF patients with a normal QRS duration. This finding will support the view about the possibility that more HF patients could benefit from cardiac resynchronization therapy.

Correlation analysis between lung ultrasound scores and pulmonary arterial systolic pressure in patients with acute heart failure admitted to the emergency intensive care unit

Background:No convenient,inexpensive,and non-invasive screening tools exist to identify pulmonary hypertension(PH)-left heart disease(LHD)patients during the early stages of the disease course.This study investigated whether different methods of lung ultrasound(LUS)could be used for the initial investigation of PH-LHD.Methods:This was a single-center prospective observational study which was performed in the Zigong Fourth People’s Hospital.We consecutively enrolled patients with heart failure(HF)admitted to the emergency intensive care unit from January 2018 to May 2020.Transthoracic echocardiography and LUS were performed within 24 h before discharge.We used the Spearman coefficient for correlation analysis between ultrasound scores and pulmonary arterial systolic pressure(PASP).Bland-Altman plots were generated to inspect possible bias,and receiver operating characteristic(ROC)curves were calculated to assess the relationship between ultrasound scores and an intermediate and high echocardiographic probability of PH-LHD.Results:Seventy-one patients were enrolled in this study,with an overall median age of 79(interquartile range:71.5–84.0)years.Among the 71 patients,36(50.7%)cases were male,and 26(36.6%)had an intermediate and high echocardiographic probability of PH.All four LUS scores in patients with an intermediate and high probability of PH were significantly higher than in patients with a low probability of PH(P<0.05).The correlation coefficient(r)between different LUS scoring methods and PASP was moderate for the 6-zone(r=0.455,P<0.001),8-zone(r=0.385,P=0.001),12-zone(r=0.587,P<0.001),and 28-zone(r=0.535,P<0.001)methods.In Bland-Altman plots,each of the four LUS scoring methods had a good agreement with PASP(P<0.001).The 8-zone and 12-zone methods showed moderately accurate discriminative values in differentiating patients with an intermediate and high echocardiographic probability of PH(P<0.05).

Catheter-based intervention for symptomatic patient with severe mitral regurgitation and very poor left ventricular systolic function-Safe but no room for complacency

Many patients with left ventricular systolic dysfunction have concomitant mitral regurgitation(MR). Their symptoms and prognosis worsen with increasing severity of MR. Percutaneous Mitra Clip&#174; can be used safely to reduce the severity of MR even in patients with advanced heart failure and is associated with improved symptoms, quality of life and exercise tolerance. However, a few patients with very poor left ventricular systolic function may experience significant haemodynamic disturbance in the peri-procedural period. We present three such patients, highlighting some of the potential problems encountered and discuss their possible pathophysiological mechanisms and safety measures.

离心抗阻训练在治疗慢性心力衰竭中的临床研究

目的探讨离心抗阻训练在慢性心力衰竭中的疗效。方法将120例慢性心力衰竭患者分为观察组和对照组,观察组接受离心抗阻训练,对照组接受传统的康复训练。比较分析2组患者治疗后在运动耐受性、左心室收缩功能、生活质量等方面的差异。结果治疗后观察组的运动耐受性、左心室收缩功能、生活质量等指标均优于对照组,差异均具有统计学意义(P<0.05)。结论离心抗阻训练可以有效治疗慢性心力衰竭,可显著提高患者的运动耐力、左心室收缩功能和生活质量。

Recent progress in the study of diastolic heart failure

Background Diastolic heart failure（DHF）, also known as heart failure with preserved ejection fraction（HFpEF）, is a common clinical phenomenon that has reached 50% of heart failure（HF）. It has high morbidity and mortality and seriously affects the quality of life in the elders. Over the past decade, many studies on the pathogenesis, diagnosis, and treatments of DHF have been reported. In this article, we summarized the latest research to provide a theoretical basis for better management of DHF.

血清BNP TFC CO Scr水平与收缩功能障碍性心力衰竭患者短期预后关系研究

目的:探究血清BNP、TFC、CO、Scr等容量负荷评估指标与收缩功能障碍性心力衰竭患者短期预后的关系。方法:连续选取2021年11月至2023年1月于承德市中心医院心血管内科住院的收缩功能障碍性(LVEF<50%)心力衰竭患者93例,记录患者出院后90d内出现心衰症状和体征加重、心血管性再就诊和(或)再住院以及心因性死亡等情况。根据预后情况分为两组:预后良好组和预后不良组。结果:共完成随访93例患者,预后不良31人。预后不良组患者的LVEF、CO、冠心病患病率均低于预后良好组(P<0.05);预后不良组患者的BNP、cTnI、TFC、Scr均高于预后良好组(P<0.05)。其中容量负荷评估指标BNP、TFC、CO、Scr是收缩功能障碍性心力衰竭患者出院后90天内发生不良预后的影响因素(P<0.05)。结论:容量负荷评估指标BNP、TFC、CO、Scr是收缩功能障碍性心力衰竭患者短期预后的影响因素,对其短期预后或可具有预测作用,对收缩功能障碍性心力衰竭患者临床治疗具有指导意义。

老年慢性收缩功能降低的心力衰竭患者血钾水平变异性与肾功能不全风险的相关性

目的探讨老年慢性收缩功能降低的心力衰竭患者血钾水平变异性与肾功能不全风险的相关性。方法连续纳入2020年1月至2022年11月芜湖市第一人民医院心血管内科收治的老年慢性心力衰竭患者157例,根据是否发生肾功能不全分为发生组36例和未发生组121例。收集所有患者一般资料,并随访6个月,记录分析血钾变异性,采用多因素logistic回归分析血钾变异性与老年慢性心力衰竭患者肾功能不全的相关性。结果发生组血钾变化幅度、血钾最大波动的速率、血钾变异系数显著高于未发生组(P<0.01)。多因素logistic回归分析显示,住院时间(OR=1.174,95%CI:1.067~1.292,P=0.001)、年龄(OR=1.939,95%CI:1.309~2.872,P=0.001)、白蛋白(OR=0.866,95%CI:0.751~0.997,P=0.046)、血钾变化幅度(OR=1.774,95%CI:1.519~2.071,P=0.016)、血钾最大波动的速率(OR=1.631,95%CI:1.265~2.167,P=0.001)、血钾变异系数(OR=1.670,95%CI:1.212~2.230,P=0.002)是老年慢性心力衰竭患者肾功能不全发生的独立影响因素。logistic回归分析显示,血钾变化幅度≥0.80、血钾最大波动的速率≥0.40、血钾变异系数≥8.20与老年慢性心力衰竭患者肾功能不全发生显著相关(P<0.01)。结论血钾水平的高变异性是老年慢性心力衰竭患者肾功能不全发生风险的危险因素。

“新四联”药物对射血分数保留慢性心力衰竭患者的心功能、血流动力学及微RNA水平的影响

目的探讨“新四联”药物对射血分数保留心力衰竭患者的心功能、血流动力学及微RNA(miRNA)水平的影响。方法回顾性选取2019年1月至2023年1月运城市中心医院心内科收治的射血分数保留慢性心力衰竭患者123例作为研究对象,按治疗方式的不同分为对照组(n=61)和观察组(n=62)。对照组在降压、降糖、抗心力衰竭、降脂等常规对症治疗基础上,行“金三角”[血管紧张素转化酶抑制剂(ACEI)/血管紧张素Ⅱ受体拮抗剂(ARB)+β受体阻滞剂+醛固酮受体拮抗剂(MRA)]治疗。观察组在常规治疗基础上予以“新四联”[血管紧张素受体脑啡肽酶抑制剂(ARNI)或ACEI/ARB+钠-葡萄糖协同转运蛋白2(SGLT2i)+β受体阻滞剂+MRA]药物治疗。比较两组治疗前、治疗后1个月的心功能指标[左心室射血分数(LVEF)、左心室收缩末期内径(LVESD)、左心室舒张末期内径(LVEDD)]和血流动力学指标[左前降支收缩期峰流速(SPV)、舒张期峰流速(DPV)、时间速度积分(TVI)]及外周血miRNA-499、miRNA-30a水平等指标差异。比较两组患者心血管病死率及再入院率。结果治疗后1个月,两组LVEF均高于治疗前,LVESD、LVEDD均低于治疗前,观察组的LVEF为(65.62±8.69)%,高于对照组[(54.25±8.64)%],LVESD、LVEDD分别为(55.36±7.62)、(40.31±6.56)mm,均低于对照组[(61.47±7.25)、(46.72±7.12)mm],差异均有统计学意义(P<0.05)。治疗后1个月,两组SPV、DPV、TVI均高于治疗前,且观察组的SPV、DPV、TVI分别为(17.65±1.34)cm/s、(32.48±3.15)cm/s、(23.58±1.26)分,均高于对照组[(15.40±1.36)cm/s、(29.42±3.12)cm/s、(20.34±1.25)分],差异均有统计学意义(P<0.05)。治疗后1个月,两组miRNA-499、miRNA-30a水平均低于治疗前,且观察组治疗后1个月的miRNA-499、miRNA-30a分别为1.65±0.22、0.11±0.06,均低于对照组(1.89±0.29、0.14±0.06),差异均有统计学意义(P<0.05)。两组心血管病死率比较,差异无统计学意义(P>0.05);观察组患者的再入院率为4.84%,显著低于对照组(14.75%),差异有统计学意义(P<0.05)。结论“新四联”药物可改善射血分数保留心力衰竭的患者的心功能,调节冠状动脉血流动力学,降低miRNA-30a和miRNA-499水平,对机体康复有益。

Relationship of left heart size and left ventricular mass with exercise capacity in chronic heart failure

Background Impaired exercise capacity is one of the most common clinical manifestations in patients with chronic heart failure （CHF）. The severity of reduced exercise capacity is an indicator of disease prognosis. The aim of the current study was to investigate the association between left heart size and mass with exercise capacity. Methods A total of 74 patients were enrolled in the study, with 37 having congestive heart failure （left ventricular ejection fraction （LVEF） 〈0.45） and the other 37 with coronary heart disease （by coronary angiography） serving as the control group （LVEF 〉0.55）. Echocardiography and cardiopulmonary exercise test were performed. The multiply linear regression model was used to evaluate the association between echocardiogrphic indices and exercise capacities. Results The study showed that left ventricular end diastolic / systolic diameter （LVEDD/LVESD）, left atrial diameter （LAD） and left ventricular mass index （LVMI） were significantly enlarged in patients with chronic heart failure compared with controls （P 〈0.01）. The VO2AT, Peak VO2, Load AT, and Load Peak in chronic heart failure patients were also significantly reduced compared with controls （P 〈0.05）, VENCO2 slope was increased in patients with chronic heart failure （P 〈0.01）. Multivariate linear regression analysis indicated that the patients＇ exercise capacity was significantly associated with the left heart size and mass, however, the direction and/or strength of the associations sometimes varied in chronic heart failure patients and controls. Load AT correlated negatively with LVEDD in chronic heart failure patients （P=0.012）, while Load AT correlated positively with LVEDD in control patients （P=0.006）. VENCO2 slope correlated positively with LAD （B=0.477, P 〈0.0001） in chronic heart failure patients, while the VENCO2 slope correlated negatively with LAD in control patients （P=0.009）. Conclusion The study indicates that the size of LVEDD and LAD are important determinants of exercise capacity in patients with CHF, which may be helpful to identify exercise tolerance for routine monitoring of systolic heart failure.

美托洛尔联合曲美他嗪治疗扩张型心肌病心力衰竭的临床观察

目的:观察美托洛尔联合曲美他嗪治疗扩张型心肌病心力衰竭的效果。方法:选取2021年1月—2022年12月本院治疗的扩张型心肌病心力衰竭患者80例,随机数字表法分为观察组40例和对照组40例。两组均参照指南进行常规治疗,同时口服曲美他嗪20 mg/次,3次/d;在此基础上对照组采用小剂量美托洛尔(≤100 mg/d)治疗,观察组采用大剂量美托洛尔(150 mg/d)治疗,连续治疗6个月。比较两组治疗前后的心功能指标、炎症指标和心室重构指标变化情况。结果:治疗前两组患者左室射血分数、左室舒张末期内径和左室收缩末期内径比较均无统计学差异(P>0.05);治疗后两组患者左室射血分数均较治疗前升高,左室舒张末期内径和左室收缩末期内径均较治疗前下降(P<0.05);观察组治疗后左室射血分高于对照组,左室舒张末期内径和左室收缩末期内径低于对照组(P<0.05)。治疗前两组患者C反应蛋白(hs-CRP)、白细胞介素-6(IL-6)、血管紧张素Ⅱ(AngⅡ)和转化生长因子β_(1)(TGF-β_(1))比较均无统计学差异(P>0.05);治疗后两组患者hs-CRP、IL-6、AngⅡ和TGF-β_(1)水平均较治疗前下降(P<0.05);且观察组低于对照组(P<0.05)。结论:大剂量美托洛尔(150 mg/d)较低剂量美托洛尔(≤100 mg/d)联合曲美他嗪对扩张型心肌病心力衰竭患者的心功能具有更好的改善作用,且能抑制炎症反应和心室重构。

慢性心力衰竭患者心肌能量代谢变化与心脏收缩功能及左心室重构的相关性

目的分析慢性心力衰竭患者心肌能量代谢(MEE)变化与心脏收缩功能及左心室重构的相关性。方法回顾性选取2021年3月至2022年12月南平市第一医院收治的100例慢性心力衰竭患者作为观察组,选取同期来本院进行体检的85名健康体检者作为对照组。比较两组研究对象的左心室收缩末圆周室壁应力(cESS)、MEE、血清游离脂肪酸(FFA)、血清糖类抗原125(CA125)、左心室舒张末期内径(LVEDd)、左心室收缩末期内径(LVESd)、左心室质量指数(LVMI)、左心室射血分数(LVEF)、每搏输出量、短轴缩短率及射血时间水平;采用Pearson相关分析,分析慢性心力衰竭患者心肌能量代谢变化与心脏收缩功能及左心室重构的相关性。结果观察组患者cESS、MEE、FFA及CA125水平分别为(194.35±30.25)kdyne/cm^(2)、(128.37±23.69)cal/min、(850.41±150.35)μmol/L、(68.54±5.33)kU/L,均高于对照组[(79.44±50.69)kdyne/cm^(2)、(68.57±12.97)cal/min、(227.31±40.57)μmol/L、(17.25±2.70)kU/L],差异均有统计学意义(P<0.05)。观察组患者LVEDd、LVESd、LVMI分别为(71.58±12.45)mm、(67.55±12.74)mm、(140.33±25.64)g/m^(2),均高于对照组[(42.05±8.46)mm、(41.39±8.16)mm、(77.59±13.58)g/m^(2)],LVEF、每搏输出量、短轴缩短率及射血时间分别为(38.49±7.64)%、(48.69±12.46)mL、(18.53±2.14)%、(181.31±18.49)ms,均低于对照组[(68.14±12.18)%、(68.67±15.04)mL、(36.05±2.34)%、(320.45±20.14)ms],差异均有统计学意义(P<0.05)。经过Pearson相关分析,cESS、MEE、FFA均与LVEDd、LVESd、LVMI、CA125呈正相关(P<0.05),cESS、MEE、FFA均与LVEF、每搏输出量、短轴缩短率、射血时间呈负相关(P<0.05)。结论慢性心力衰竭患者MEE、心脏收缩功能及左心室重构均发生异常,且MEE与心脏收缩功能、左心室重构密切相关。

The role of device therapy in heart failure with reduced ejection fraction(HFrEF) : a narrative review

Heart failure has gained increasing notice due to its high prevalence and mortality rate. The management for heart failure has been emphasized on the role of device therapy. Implantable cardioverter defibrillator(ICD) and cardiac resynchronization therapy(CRT) were given strong recommendation for heart failure with reduced ejection fraction(HFrEF), considering their effectiveness on preventing sudden cardiac death(SCD), improving cardiac function and benefiting survival. In this review, we explained the underlying mechanisms of disease initiation and progression in HFrEF, in order to build the connection between the pathological basis of HFrEF and the rationality of ICD and CRT on terminating ventricular arrhythmia, improving cardiac function, decreasing the rate of adverse clinical outcomes and benefiting survival. In addition, we discussed the high-quality researches with significant values on the discovery of device therapy clinical benefits, and compared the class I recommendations for device therapy in HFr EF, suggested by American Heart Association and European Society of Cardiology.

Heart failure

2010316 Tissue doppler imaging observation on effect of long-term use of gingko biloba tabtet on left ventricular function in patients with chronic heart failure. ZHANG Hui(张辉),et al. Dept Cardiovasc Med, 2nd Hosp, Hebei Med Univ,Shijiazhuang 050000. Chin J Integr Tradit & West Med 2010;30(5):478-481. Objective To quantitatively observe the effect of

Heart failure

2008037 Factors associated with efficacy of cardiac resynchronization therapy for patients with congestive heart failure. SHI Haoying(史浩颖), et al. Dept Cardiol, Zhongshan Hosp Fudan Univ, Shanghai 200032. Chin J Cardiol 2007;35(12):1099-1163. Objective The efficacy of cardiac resynchronization therapy (CRT) in patients with congestive heart failure and the potential factors associated with responder or nonresponder were investigated. Methods

舒张性和收缩性心衰患者的临床表现差异分析

目的比较舒张性心功能衰竭(心衰)和收缩性心衰患者在临床表现及危险因素方面的差异。方法将2 088例心衰患者按左室射血分数(EF)分为舒张性心衰组(EF≥0.45,1 356例)和收缩性心衰组(EF<0.45,732例),比较2组的临床资料,分析影响2种心衰类型的相关因素。结果与收缩性心衰组相比,舒张性心衰组的平均年龄更大,女性及高血压的比例更高,但低蛋白血症、贫血、肾功能不全、高尿酸血症的比例更低,且以心功能Ⅰ、Ⅱ级为主;收缩压、白蛋白、前白蛋白、胆固醇、血钠、血氯水平更高,但心率更慢,肌酐、血尿酸、血钾、脑钠肽水平更低。与收缩性心衰组相比,舒张性心衰组的左室舒末容积、左室缩末容积较低,RAS阻断剂和β受体阻断剂使用率更低,他汀类药物使用率更高。Logistic多因素回归分析发现,性别、高血压对舒张性心衰影响更强;低蛋白血症、高尿酸血症则对收缩性心衰影响更强。结论舒张性心衰和收缩性心衰存在诸多差异,不同类型的心衰需采取不同的诊治及预防方案。

舒张性与收缩性心力衰竭患者临床特征的对比研究

目的探讨舒张性心力衰竭(DHF)与收缩性心力衰竭(SHF)临床特征的差异。方法回顾性分析苏州大学附属第一医院因心力衰竭住院的826例患者的临床资料,根据左室射血分数(LVEF)及相关指标分为DHF组385例与SHF组441例,分析两组患者各参数之间的差异。结果 DHF组患者385例(占46.6%),多见于年长、女性患者,高血压心脏病和冠心病分别是DHF的第一、二位病因。SHF组左室舒张末期内径(LVEDD)、左室收缩末期内径(LVESD)增大,QRS时限延长;而DHF患者心室腔无明显扩大,但室壁增厚明显,且房颤发生率高。DHF组NYHA分级Ⅳ级、肝肾功能受损、住院死亡率及1年内再次住院率均显著低于SHF组,血管紧张素转化酶抑制剂(ACEI)、地高辛、血管活性药物、利尿剂、β-受体阻滞剂、他汀类药物、安体舒通的应用明显低于SHF患者。结论与SHF患者相比,DHF患者病情严重程度较轻,住院死亡率及1年内因心力衰竭再次入院的事件发生率低,预后相对较好。利尿剂是改善DHF症状的有效药物,肾素-血管紧张素系统(RAS)阻滞剂和β-受体阻滞剂能改善DHF患者的预后。