A randomized controlled clinical trial of cardiac telerehabilitation with a prolonged mobile care monitoring strategy after an acute coronary syndrome.

BACKGROUND: Center-based cardiac rehabilitation (CBCR) improves health outcomes but has some limitations. We designed and validated a telerehabilitation system to overcome these barriers. METHODS: We included 67 low-risk acute coronary syndrome patients in a randomized controlled trial allocated 1:1 to a 10-month cardiac telerehabilitation (CTR) program or an 8-week CBCR program. Patients underwent ergospirometry, blood tests, anthropometric measurements, IPAQ, PREDIMED, HADS, and EQ-5D questionnaires at baseline and 10 months. Data collectors were blinded to the treatment groups. RESULTS: The intention-to-treat analysis included 31 patients in the CTR group and 28 patients in the CBCR group. The primary outcome showed increased physical activity according to the IPAQ survey in the CTR group compared to the CBCR group (median increase 1726 METS-min/week vs. 636, p = .045). Mean VO2max increased 1.62 ml/(kg min) (95% confidence interval [CI]: 0.56-2.69, p < .004) from baseline in the CTR group, and 0.60 mL/(kg min) (p = .40) in the CBCR group. Mean apoB/apoA-I ratio decreased 0.13 (95% CI: -0.03 to 0.24, p = .017) in the CTR group, with no significant change in the CBCR group (p = .092). The median non-HDL cholesterol increased by 7.3 mg/dl (IQR: -2.4 to 18.6, p = .021) in the CBCR group, but the increase was not significant in the CTR group (p = .080). Adherence to a Mediterranean diet, psychological distress, and quality of life showed greater improvement in the CTR group than in the CBCR group. Return-to-work time was reduced with the telerehabilitation strategy. CONCLUSION: This system allows minimal in-hospital training and prolonged follow-up. This strategy showed better results than CBCR.

Prognostic value and clinical predictors of intramyocardial hemorrhage measured by CMR T2* sequences in STEMI.

Recent studies show that microvascular injury consists of microvascular obstruction (MVO) and intramyocardial hemorrhage (IMH). In patients with reperfused ST-segment elevation myocardial infarction (STEMI) quantitative assessment of IMH with T2* cardiovascular magnetic resonance imaging (CMR) appears to be useful in evaluation of microvascular damage. The current study aimed to investigate feasibility of this approach and to correlate IMH with clinical and CMR parameters. A single center observational cohort study was performed in reperfused STEMI patients with CMR examination 7 days (IQR: 5 to 8 days) after percutaneous coronary intervention. Infarct size (IS) and MVO were evaluated in short-axis late gadolinium enhancement sequences and IMH with whole LV volume T2* mapping sequences. Of the 94 patients, MVO was identified in 52% of patients and the median size of MVO was 3% of LV mass (IQR: 1.5 to 5.4%). IMH was present in 28% of patients and the median size of IMH was 1.1% of LV mass (IQR: 0.5 to 2.9%). IMH extent was independently associated with anterior myocardial infarction (p = 0.022) and thrombectomy (p = 0.049). IMH was correlated with MVO (R = 0.62, p < 0.001), necrosis (R = 0.58, p < 0.001) and LVEF (R = -0.21, p = 0.04). Patients with IMH presented higher incidence of MACE events, independently of LVEF (p = 0.022). T2* mapping is a novel imaging approach that proves useful to asses IMH in the setting of reperfused STEMI. T2* IMH extent was associated with anterior infarction and thrombectomy. T2* IMH was associated with higher incidence of MACE events regardless preserved or reduced LVEF.

[Value of NTproBNP concentration in an out-of-hospital adult population]. / Valor del nivel de NTproBNP en población adulta extrahospitalaria.

INTRODUCTION: The diagnosis of chronic heart failure (CHF) is based on demonstrating the cardiac origin of clinical manifestations. Echocardiography is the method of choice for the detection of left ventricular systolic dysfunction (LVSD). Brain natriuretic peptide (BNP) rises during LVSD. OBJECTIVES: To analyze the plasma concentration of N-terminal brain natriuretic propeptide (NTproBNP) in a general adult population in relation to different spontaneous circumstances and to study its capacity for identifying patients with LVSD.Methods. A cardiological examination was made and plasma NTproBNP levels were measured in a randomized group of 203 people (49-81 years old) from the Community of Valencia. RESULTS: The average NTproBNP concentration was 52.2 98.2 pmol/l. NTproBNP levels varied with age, gender and functional stage (NYHA). The highest NTproBNP values were observed in people who had previously suffered from acute pulmonary edema or who had an ejection fraction (EF) of less than 40%. There was also a significant elevation in patients with nocturnal dyspnea, orthopnea, atrial fibrillation, EF < or = 50%, angina, and ankle edema. The best concentration of NTproBNP for differentiating EF < or = 50% was 37.7 pmol/l, with 92% sensitivity and 68% specificity. CONCLUSIONS: The elevation of NTproBNP concentration indicates the cardiac origin of clinical manifestations and serves to select patients for echocardiographic examination. Low NTproBNP concentrations help to rule out LVSD.