Abstract P029: Is Non-Ischemic Cardiomyopathy (NICM) Associated With Better Prognosis Than Ischemic Cardiomyopathy (ICM) in Heart Failure Patients?

Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Deepakraj Gajanana ◽  
Abel Romero-Corral ◽  
Mahek Shah ◽  
Parichart Junpapart ◽  
Vincent M Figueredo ◽  
...  
Keyword(s):  
Heart Failure ◽  
Ischemic Cardiomyopathy ◽  
Clinical Characteristics ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Heart Failure Management ◽  
Heart Failure Patients ◽  
Significant Difference ◽  
All Cause Mortality

Background: Past data suggest ischemic cardiomyopathy (ICM) is associated with worse prognosis when compared to non-ischemic cardiomyopathy(NICM). With advances in heart failure management, this relationship deserves a fresh look. We hypothesize that all cause mortality from NICM is lower when compared to ICM over five year period. Methods: We retrospectively studied consecutive heart failure patients with left ventricular ejection fraction(EF) less than 35% admitted to Einstein Medical Center Philadelphia between 01/01/2007 to 12/31/2007. Data pertaining to patient demographics and clinical characteristics were obtained. All cause mortality was obtained at 5 years using hazard ratio to account for time to event. Results: The final cohort consisted of 360 patients of which 63%(224 of 360) had NICM. Mean age was 61±16 years for NICM and 66±11 yrs for ICM. African Americans constituted 83%(185 of 224) of NICM and 59%(80 of 136) of ICM. The clinical characteristics are as shown in the table. There were 160 deaths over the follow up period. Age, CKD, dyslipidemia and EF were significant predictors of mortality. ICM cohort had 81 deaths out of 136(60%) as compared to 85 out of 185((39%) in NICM over the follow up period. However, when adjusted for age, DM, CKD and days of follow-up, there was no statistically significant difference in mortality between the two groups over the five year follow up period. Conclusions: In this study, there was no significant mortality difference between ICM and NICM. We also found that despite advances in heart failure management in the last two decades, in clinical practice they are under-utilized.

Twin peaks diversity with sacubitril/valsartan treatment responses in cardiomyopathic heart failure patients of non-ischemic compared to ischemic etiologies

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
H.Y Chang ◽  
W.R Chiou ◽  
P.L Lin ◽  
C.Y Hsu ◽  
C.T Liao ◽  
...  
Keyword(s):  
Heart Failure ◽  
Primary Endpoint ◽  
Ischemic Cardiomyopathy ◽  
Ventricular Remodeling ◽  
Left Ventricular Ejection ◽  
Funding Source ◽  
Heart Failure Patients ◽  
Twin Peaks ◽  
All Cause Mortality

Abstract Background Ischemic cardiomyopathy (ICM) has been associated with increased mortality when compared with non-ischemic cardiomyopathy (NICM) from several heart failure (HF) cohorts. Instead, PARADIGM study demonstrated similar event rates of cardiovascular (CV) death, all-cause mortality and HF readmissions between ICM and NICM patients. Although the beneficiary effect of sacubitril/valsartan (SAC/VAL) compared to enalapril on these endpoints was consistent across etiologic categories, PARADIGM study did not analyze the effect of ventricular remodeling of SAC/VAL on patients with different HF etiologies, which may significantly affect treatment outcomes. Purpose We aim to compare alterations of left ventricular ejection fraction (LVEF) following SAC/VAL treatment and its association with clinical outcomes in patients with different HF etiologies. Methods Treatment with angiotensin receptor neprilysin inhibitor for Taiwan heart failure patients (TAROT-HF) study is a multicenter study which enrolled 1552 patients with LVEF <40%, whom had been on SAC/VAL treatment from 9 hospitals between 2017 and 2018. After excluding patients without having follow-up echocardiographic studies, patients were grouped by HF etiologies and by LVEF changes following treatment for 8-month period. LVEF improvement ≥15% was defined as “significant improvement”, 5–15% as “marginal improvement”, and <5% or worse as “lack of improvement”. The primary endpoint was a composite of CV death or a first hospitalization for HF. Mean follow-up period was 726 days. Results A total of 1230 patients were analyzed. Patients with ICM were significantly older, more male, and prone to have associated hypertension and diabetes. On the other hand, patients with NICM had lower LVEF and higher likelihood of atrial fibrillation. LVEF increase was significantly greater in patients with NICM compared to those with ICM (11.2±12.4% vs. 6.9±9.8, p<0.001). The effect of ventricular remodeling of SAC/VAL on patients with NICM showed twin peaks diversity (Significant improvement 37.1%, lack of improvement 42.3%), whereas in patients with ICM the proportions of significant, marginal and lack of improvement groups were 19.4%, 28.2% and 52.4%, respectively. The primary endpoint showed twin peaks diversity also in patients with NICM in line with LVEF changes: adjusted HR for patients with NICM and significant improvement was 0.41 (95% CI 0.29–0.57, p<0.001), for patients with NICM and lack of improvement was 1.54 (95% CI 1.22–1.94, p<0.001). Analyses for CV death, all-cause mortality, and HF readmission demonstrated consistent results. Conclusion Patients with NICM had higher degree of LVEF improvement than those with ICM following SAC/VAL treatment, and significant improvement of LVEF in NICM patients may indicate favorable outcome. NICM patients without response to SAC/VAL treatment should serve as an indicator for poor clinical outcome and warranted meticulous HF management. Funding Acknowledgement Type of funding source: Private hospital(s). Main funding source(s): Cheng Hsin General Hospital

P1167Effect of diabetes on all-cause mortality in CRT patients

EP Europace ◽  
2020 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
E D Merkel ◽  
A Behon ◽  
W R Schwertner ◽  
A Pinter ◽  
I Osztheimer ◽  
...  
Keyword(s):  
Heart Failure ◽  
Left Ventricular Ejection Fraction ◽  
Ejection Fraction ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Impaired Left Ventricular Function ◽  
Ventricular Ejection Fraction ◽  
Heart Failure Patients ◽  
All Cause Mortality

Abstract Background Heart failure patients with diabetes mellitus (DM) have a higher risk for all-cause mortality and also for sudden cardiac death. We lack data on the effect of adding an implantable cardioverter defibrillator (ICD) to cardiac resynchronization therapy (CRT) on all-cause mortality in diabetic heart failure patients. Purpose We aimed to investigate the risk of DM on all-cause mortality in CRT patients, and to examine the beneficial effect of adding an ICD on all-cause mortality by left ventricular ejection fraction in CRT patients with or without DM. Methods We examined retrospectively 2525 patients who underwent CRT implantation based on the current guidelines at our clinic between June 2000 and September 2018, of which 928 (36%) had diabetes. The primary endpoint was all-cause mortality, also expressed as events per 100 person-year by quintiles of ejection fraction (EF) with or without an ICD or DM. Time to event data was investigated by Kaplan Meier and multivariate Cox regressional analysis. Results During our mean follow-up time of 4.6 years, 1432 (56%) patients reached the primary endpoint, of which 553 (38%) had DM. In the DM group, hypertension (82% vs. 66%; p‹0.01), ischemic etiology (56% vs. 44%; p‹0.01), myocardial infarction (43% vs. 36%; p‹0.01) was more frequent compared to non-DM group. There was no difference between the two groups regarding the implantation of an ICD (54% vs. 53%; p = 0,84). Those with DM showed a 25% higher risk of all-cause mortality (HR 1.25; 95% CI 1.12-1.40; p‹0.01), also observable after adjusting for relevant clinical covariates such as age, gender, atrial fibrillation and the addition of an ICD (HR 1.17; 95% CI 1.06-1.31; p‹0.01). Examined as all-cause mortality per 100 person-year follow up, patients with EF›30% and DM (13,7 events/ 100 person-year follow-up for an EF 30-35%) showed similar risk as those without DM and a severely impaired left ventricular function with EF‹25% (14 events/100 person-year follow-up for an EF <25%). Investigating the composite end-point of all-cause mortality and heart failure hospitalization, those with DM showed a 21% higher risk than non-DM CRT patients (HR 1.21; CI 1.09-1.34; p = 0 < 0.001). Adding an ICD for CRT patients with DM reduces the risk of all-cause mortality significantly by 32% (HR 0,68; CI 0,56 to 0,82; p < 0.001) during the first six years but diminished on longer follow-up time. Conclusions Diabetes was found as an independent predictor of all-cause mortality in CRT patients. Those with a left ventricular ejection fraction above 30% have comparable risk of mortality as non-diabetic patients with a severely impaired left ventricular function. In diabetic CRT patients the addition of an ICD reduces the risk of all-cause mortality mostly seen in the first six years. These findings might implicate the relevance of adding an ICD to CRT even at a higher ejection fraction in those with severe comorbidities such as diabetes. Abstract Figure. All-cause mortality in CRT, DM patients

scholarly journals Clinical Outcomes in Patients with Ischemic versus Non-Ischemic Cardiomyopathy after Angiotensin-Neprilysin Inhibition Therapy

2021 ◽  
Vol 10 (21) ◽  
pp. 4989
Author(s):  
Mohammad Abumayyaleh ◽  
Christina Pilsinger ◽  
Ibrahim El-Battrawy ◽  
Marvin Kummer ◽  
Jürgen Kuschyk ◽  
...  
Keyword(s):  
Heart Failure ◽  
Ejection Fraction ◽  
Ischemic Cardiomyopathy ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Ventricular Tachyarrhythmias ◽  
Ventricular Ejection Fraction ◽  
One Year ◽  
The Impact

Background: The angiotensin receptor-neprilysin inhibitor (ARNI) decreases cardiovascular mortality in patients with chronic heart failure with a reduced ejection fraction (HFrEF). Data regarding the impact of ARNI on the outcome in HFrEF patients according to heart failure etiology are limited. Methods and results: One hundred twenty-one consecutive patients with HFrEF from the years 2016 to 2017 were included at the Medical Centre Mannheim Heidelberg University and treated with ARNI according to the current guidelines. Left ventricular ejection fraction (LVEF) was numerically improved during the treatment with ARNI in both patient groups, that with ischemic cardiomyopathy (n = 61) (ICMP), and that with non-ischemic cardiomyopathy (n = 60) (NICMP); p = 0.25. Consistent with this data, the NT-proBNP decreased in both groups, more commonly in the NICMP patient group. In addition, the glomerular filtration rate (GFR) and creatinine changed before and after the treatment with ARNI in both groups. In a one-year follow-up, the rate of ventricular tachyarrhythmias (ventricular tachycardia and ventricular fibrillation) tended to be higher in the ICMP group compared with the NICMP group (ICMP 38.71% vs. NICMP 17.24%; p = 0.07). The rate of one-year all-cause mortality was similar in both groups (ICMP 6.5% vs. NICMP 6.6%; log-rank = 0.9947). Conclusions: This study shows that, although the treatment with ARNI improves the LVEF in ICMP and NICMP patients, the risk of ventricular tachyarrhythmias remains higher in ICMP patients in comparison with NICMP patients. Renal function is improved in the NICMP group after the treatment. Long-term mortality is similar over a one-year follow-up.

Abstract P232: Screening Past B-Type Natriuretic Peptide (BNP) Values to Identify Candidates for Treatment of Systolic Dysfunction

2011 ◽  
Vol 4 (suppl_1) ◽  
Author(s):  
Parisa Gholami ◽  
Shoutzu Lin ◽  
Paul Heidenreich
Keyword(s):  
Heart Failure ◽  
Left Ventricular Ejection Fraction ◽  
Ejection Fraction ◽  
Left Ventricular ◽  
Ventricular Ejection ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction ◽  
Significant Difference ◽  
The Mean

Background: BNP testing is now common though it is not clear if the test results are used to improve patient care. A high BNP may be an indicator that the left ventricular ejection fraction (LVEF) is low (<40%) such that the patient will benefit from life-prolonging therapy. Objective: To determine how often clinicians obtained a measure of LVEF (echocardiography, nuclear) following a high BNP value when the left ventricular ejection fraction (LVEF) was not known to be low (<40%). Methods and Results: We reviewed the medical records of 296 consecutive patients (inpatient or outpatient) with a BNP values of at least 200 pg/ml at a single medical center (tertiary hospital with 8 community clinics). A prior diagnosis of heart failure was made in 65%, while 42% had diabetes, 79% had hypertension, 59% had ischemic heart disease and 31% had chronic lung disease. The mean age was 73 ± 12 years, 75% were white, 10% black, 15% other and the mean BNP was 810 ± 814 pg/ml. The LVEF was known to be < 40% in 84 patients (28%, mean BNP value of 1094 ± 969 pg/ml). Of the remaining 212 patients without a known low LVEF, 161 (76%) had a prior LVEF >=40% ( mean BNP value of 673 ± 635 pg/ml), and 51 (24%) had no prior LVEF documented (mean BNP 775 ± 926 pg/ml). Following the high BNP, a measure of LVEF was obtained (including outside studies documented by the primary care provider) within 6 months in only 53% (113 of 212) of those with an LVEF not known to be low. Of those with a follow-up echocardiogram, the LVEF was <40% in 18/113 (16%) and >=40% in 95/113 (84%). There was no significant difference in mean initial BNP values between those with a follow-up LVEF <40% (872 ± 940pg/ml), >=40% (704 ± 737 pg/ml), or not done (661 ± 649 pg/ml, p=0.5). Conclusions: Follow-up measures of LVEF did not occur in almost 50% of patients with a high BNP where the information may have led to institution of life-prolonging therapy. Of those that did have a follow-up study a new diagnosis of depressesd LVEF was noted in 16%. Screening of existing BNP and LVEF data and may be an efficient strategy to identify patients that may benefit from life-prolonging therapy for heart failure.

The Relationship Between N-Terminal Pro-Brain Natriuretic Peptide Level and Myocardial Performance Index and Their Prognostic Importances in Patients With Acute Myocardial Infarction in Short Term Follow-up

2020 ◽  
Vol 1 (1) ◽  
pp. 12-17
Author(s):  
Mehmet Küçükosmanoğlu ◽  
Cihan Örem
Keyword(s):  
Heart Failure ◽  
Prognostic Significance ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Ejection Time ◽  
Ventricular Ejection Fraction ◽  
Significant Difference ◽  
The Mean ◽  
The Relationship

Introduction: MPI is an echocardiographic parameter that exibit the left ventricular functions globally. NT-proBNP  is an important both diagnostic and prognostic factor in heart failure. In this study, we aimed to investigate the prognostic significance of serum NT-proBNP levels and MPI in patients with STEMI. Method: Totally 104 patients with a diagnosis of STEMI were included in the study. Patients followed for 30-days and questioned for presence of symptoms of heart failure (HF) and cardiac death. Patients were invited for outpatient control after 30-days and were divided into two groups: (HF (+) group) and (HF (-) group). Results: Totally 104 patients with STEMI were hospitalized in the coronary intensive care unit. Of those patients, 17 were female (16%), 87 were male (84%), and the mean age of the patients was 58.9±10.8 years. During the 30-day follow-up, 28 (27%) of 104 patients developed HF. The mean age, hypertension ratio and anterior STEMI rate were significantly higher in the HF (+) group compared to the HF (-) group. Ejection time (ET) and left ventricular ejection fraction (LVEF) were significantly lower and MPI was significantly higher in the HF (+) group. When the values on day first and  sixth were compared, NT-ProBNP levels were decreased in both groups. There was no significant difference between the two groups in terms of the change in MPI values on the first and sixth days. Multiple regression analysis showed that the presence of anterior MI, first day NT-proBNP level and LVEF were independently associated with development of HF and death. Conclusion: In our study, NT-proBNP levels were found to be positively associated with MPI in patients with acute STEMI. It was concluded that the level of NT-proBNP detected especially on the 1st day was more valuable than MPI in determining HF development and prognosis after STEMI.  

scholarly journals Six-Month Predictive Value of Diuretic Resistance Formulas in Discharged Heart Failure Patients after an Acute Decompensation

2020 ◽  
Vol 9 (9) ◽  
pp. 2932
Author(s):  
Mauro Feola ◽  
Arianna Rossi ◽  
Marzia Testa ◽  
Cinzia Ferreri ◽  
Alberto Palazzuoli ◽  
...  
Keyword(s):  
Heart Failure ◽  
Ejection Fraction ◽  
Acute Decompensated Heart Failure ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction ◽  
Heart Failure Patients ◽  
Acute Decompensation ◽  
Diuretic Response

Background. The diuretic response has been shown to be a robust independent marker of cardiovascular outcomes in acute heart failure patients. The objectives of this clinical research are to analyze two different formulas (diuretic response (DR) or response to diuretic (R-to-D)) in predicting 6-month clinical outcomes. Methods: Consecutive patients discharged alive after an acute decompensated heart failure (ADHF) were enrolled. All patients underwent N-terminal-pro hormone BNP (NT-proBNP) and an echocardiogram together with DR and R-to-D calculation during diuretic administration. Death by any cause, cardiac transplantation and worsening heart failure (HF) requiring readmission to hospital were considered cardiovascular events. Results: 263 patients (62% male, age 78 years) were analyzed at 6-month follow-up. During the follow-up 58 (22.05%) events were scheduled. Patients who experienced CV-event had a worse renal function (p = 0.001), a higher NT-proBNP (p = 0.001), a lower left ventricular ejection fraction (p = 0.01), DR (p = 0.02) and R-to-D (p = 0.03). Spearman rho’s correlation coefficient showed a strong direct correlation between DR and R to D in all patients (r = 0.93; p < 0.001) and both in heart failure with reduced ejection fraction (HFrEF) (r = 0.94; p < 0.001) and HF preserved ejection fraction (HFpEF) (r = 0.91; p < 0.001). At multivariate analysis, a value of R-to-D <1.69 kg/40 mg, but only <0.67 kg/40 mg for DR were significantly related to poor 6-month outcome (p = 0.04 and p = 0.05, respectively). Receiver operating characteristic (ROC) curve analyses demonstrated that DR and R-to-D are equivalent in predicting prognosis (area under curve (AUC): 0.39 and 0.40, respectively). Only R-to-D was inversely related to in-hospital stay (r = −0.23; p = 0.01). Conclusion: Adding diuresis to DR seemed to provide a better risk assessment in alive HF patients discharged after an acute decompensation.

1384MitraClip treatment of functional mitral regurgitation - A meta-analysis

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
M Noutsias ◽  
M Matiakis ◽  
M Ali ◽  
E Abate ◽  
B Ahmadzada ◽  
...  
Keyword(s):  
Heart Failure ◽  
Mitral Regurgitation ◽  
Meta Analysis ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Functional Mitral Regurgitation ◽  
Clinical Effects ◽  
Ventricular Ejection Fraction ◽  
Heart Failure Patients ◽  
All Cause Mortality

Abstract Moderate-to-severe or severe functional mitral regurgitation (FMR) is associated with higher rates of hospitalizations and with increased mortality in heart failure with reduced left ventricular ejection fraction (HFrEF). Transcatheter mitral valve repair by MitraClip® implantation (TMVrMC) may effectively reduce severe MR, and is associated with symptomatic improvement. However, the long-term clinical effects of this procedure are not well defined. Aims We analyzed outcomes for rehospitalization and survival in heart failure patients with moderate-to-severe or severe functional mitral regurgitation (FMR) treated by either medical treatment (MT) only TMVrMC+MT by meta-analysis. Methods and results By systematic search of bibliographic databases, we evaluated publications comparing heart failure patients with FMR treated by MT only versus treatment by MT combined with TMVrMC. Studies with a minimum of 25 enrolled patients and a follow/up period of at least 12 months were deemed eligible for this meta-analysis. We identified n=7 studies enrolling 2,884 HFrEF patients, divided into two study arms: TMVrMC+MT (n=1,618), versus FMR patients receiving MT only (n=1,266). At 12 months, there was a significant reduction in all-cause mortality favoring TMVR+MT (OR: 0.67; CI 95% 0.55–0.81), as well as a reduction of unplanned rehospitalizations (OR: 0.69; 95%; CI 0.53–0.89), compared with the MT only patients. At 24 months, there was a significant reduction of all-cause mortality in the TMVrMC+MT patient group (OR: 0.50; CI: 95%: 0.38–0.66; p<0.001). TMVrMC+MT was associated with significantly lower rates of unplanned re-admissions for heart failure compared with MT only at 12 months (OR: 0.69; 95% CI: 0.53–0.89; p<0.001) and at 24 months (OR: 0.53; 95% CI: 0.39–0.71; p<0.001). In one publication, a survival benefit of TMVrMC+MT over MT alone was shown at 5 years post intervention (HR: 0.75; 95% CI: 0.69–0.94; p=0.012) after weighting for propensity score and controlling for age. Conclusions This meta-analysis on n=2,884 patients with moderate-to-severe or severe FMR reveals that TMVrMC+MT, as compared with MT alone, is associated with a significant reduction of rehospitalizations and improvement of survival. These data imply additional evidence for TMVrMC in eligible heart failure patients with relevant FMR, which might be important for an update of the corresponding guidelines.

P6209Relationship between skin autofluorescence levels and clinical outcomes in heart failure patients undergoing cardiac rehabilitation

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
M Kunimoto ◽  
K Shimada ◽  
M Yokoyama ◽  
A Honzawa ◽  
M Yamada ◽  
...  
Keyword(s):  
Heart Failure ◽  
Cardiac Rehabilitation ◽  
Cox Regression ◽  
Left Ventricular ◽  
University Hospital ◽  
Left Ventricular Ejection ◽  
Skin Autofluorescence ◽  
Ventricular Ejection Fraction ◽  
All Cause Mortality

Abstract Background Advanced glycation end-products, indicated by skin autofluorescence (SAF) levels, could be prognostic predictors of all-cause and cardiovascular mortality in patients with diabetes mellitus (DM) and renal disease. However, the clinical usefulness of SAF levels in patients with heart failure (HF) who underwent cardiac rehabilitation (CR) remains unclear. Purpose The purpose of this study was to investigate the prognostic value of SAF levels in patients with HF who underwent CR. Methods This study enrolled 204 consecutive patients with HF who had undergone CR at our university hospital between November 2015 and October 2017. Clinical characteristics and anthropometric data were collected at the beginning of CR. SAF levels were noninvasively measured with an autofluorescence reader. The major adverse cardiovascular event (MACE) was a composite of all-cause mortality and unplanned hospitalization for HF. Follow-up data concerning primary endpoints were collected until November 2018. Results Patients' mean age was 68.1 years, and 61% were males. Patients were divided into two groups according to the median SAF levels (high and low SAF groups). Patients in the high SAF group were significantly older, had a higher prevalence of chronic kidney disease, and histories of coronary artery bypass surgery; however, there were no significant between-group differences in sex, prevalence of DM, left ventricular ejection fraction, and physical function. During a median follow-up period of 623 days, 25 patients experienced all-cause mortality and 34 were hospitalized for HF. Kaplan–Meier analysis showed that patients in the high SAF group had a higher incidence of MACE (log-rank P<0.05), whereas when patients were divided into two groups according to the median hemoglobin A1c level, no significant between-group difference was observed for the incidence of MACE (Figure). After adjusting for confounding factors, Cox regression multivariate analysis revealed that SAF levels were independently associated with the incidence of MACE (hazard ratio: 1.74, 95% confidence interval: 1.12–2.65, P<0.05). Figure 1 Conclusion SAF levels were significantly associated with the incidence of MACE in patients with HF and may be useful for risk stratification in patients with HF who undergo CR.

scholarly journals Comparison of ventricular tachyarrhythmia recurrence between ischemic cardiomyopathy and dilated cardiomyopathy: a retrospective study

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5312 ◽  
Author(s):  
Chih-Yuan Fang ◽  
Huang-Chung Chen ◽  
Yung-Lung Chen ◽  
Tzu-Hsien Tsai ◽  
Kuo-Li Pan ◽  
...  
Keyword(s):  
Secondary Prevention ◽  
Dilated Cardiomyopathy ◽  
Cardiovascular Mortality ◽  
Ischemic Cardiomyopathy ◽  
Ventricular Tachyarrhythmia ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction ◽  
All Cause Mortality

BackgroundThe use of an implantable cardioverter-defibrillator (ICD) has been established as an effective secondary prevention strategy for ventricular tachycardia (VT)/ventricular fibrillation (VF). However, few reports discuss the difference in clinical predictors for recurrent VT/VF between patients with ischemic cardiomyopathy (ICM) and patients with dilated cardiomyopathy (DCM).MethodsFrom May 2004 to December 2015, 132 consecutive patients who had ICM (n= 94) or DCM (n= 38) and had received ICD implantation for secondary prevention were enrolled in this study. All anti-tachycardia events during follow-up were validated. The clinical characteristics and echocardiographic parameters were obtained for comparison. The incidence of recurrence of VT/VF, cardiovascular mortality, all-cause mortality, the change of left ventricular ejection fraction (LVEF) and LV volume were analyzed.ResultsAt a mean follow-up of 3.62 ± 2.93 years, 34 patients (36.2%) in the ICM group and 22 patients (57.9%) in the DCM group had a recurrence of VT/VF episodes (p= 0.032). The DCM group had a lower LVEF (p= 0.019), a larger LV end-diastolic volume (LVEDV) (p= 0.001), a higher prevalence of LVEDV >158 mL (p= 0.010), and a larger LV end-systolic volume (p= 0.010) than the ICM group. LVEDV >158 mL and no use of angiotensin-converting-enzyme inhibitor/angiotensin receptor blocker were independent predictors of recurrences of VT/VF in ICM patients but not in DCM patients. There were no difference in cardiovascular mortality and all-cause mortality between the ICM and DCM patients.ConclusionThe DCM patients had a higher recurrence rate of VT/VF than did the ICM patients during long-term follow-up. An enlarged LV is an independent predictor of the recurrence of VT/VF in ICM patients receiving ICD for secondary prevention.

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