Significance of the APPLE score and the monocyte-HDL cholesterol ratio in predicting late recurrence of atrial fibrillation following catheter ablation based on a retrospective study.

Objective: Collect the characteristics of patients' baseline data, and explore the predictive factors of late recurrence of atrial fibrillation (AF) after catheter ablation according to whether late recurrence or not. The purpose of this study was to determine the significance of the APPLE score in conjunction with the monocyte-high-density lipoprotein cholesterol ratio (MHR) in predicting the late recurrence of AF after catheter ablation in patients with AF.

Methods: Baseline data were collected to explore the predictors of late recurrence after AF catheter ablation.

Comparison of Second-Generation Cryoballoon Ablation and Quantitative Radiofrequency Ablation Guided by Ablation Index for Atrial Fibrillation.

We compared the efficacy and complication rates of quantitative radiofrequency ablation guided by ablation index (RFCA-AI) with those of second-generation cryoballoon ablation (CBA-2). Consecutive patients (n = 230) with symptomatic atrial fibrillation (AF) undergoing a first ablation CBA-2 (92 patients) or RFCA-AI (138 patients) procedure were enrolled in this study. The late recurrence rate in the CBA-2 group was higher than that in the RFCA-AI group ( = .

WITHDRAWN: Comparison of second-generation cryoballoon ablation and quantitative radiofrequency ablation guided by ablation index for atrial fibrillation.

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Comparison of Amiodarone and Propafenone in Blanking Period after Radiofrequency Catheter Ablation in Patients with Atrial Fibrillation: A Propensity Score-Matched Study.

Background: Amiodarone and propafenone are commonly used to maintain sinus rhythm in patients with atrial fibrillation (AF). However, it is not known which one is better in reducing early recurrence (ER) during the blanking period (the first three months after catheter ablation).

Objective: To compare the efficacy and safety of amiodarone and propafenone in reducing ER during the blanking period after radiofrequency catheter ablation (RFCA) in AF patients.

The impact of echocardiographic parameter ratio of E/E' on the late recurrence paroxysmal atrial fibrillation in patients accepted radiofrequency catheter ablation: A retrospective clinical study.

This study aimed to evaluate the impact of the echocardiographic parameter ratio E/E' on the late recurrence of paroxysmal atrial fibrillation in patients after receiving radiofrequency catheter ablation.We retrospectively examined total of 288 paroxysmal atrial fibrillation (PAF) patients that underwent a preliminary radiofrequency catheter ablation (RFCA) in our hospital. During the first phase in this study, the patients were divided into 2 groups upon AF recurrence after RFCA: Recurrent group, n = 67 patients with rapid trial arrhythmia that lasted for more than 30 seconds at 3 months after RFCA and the Nonrecurrent group, n = 221.

Combining current of injury and P-wave sensing optimized right atrial active-fixation leads implantation.

Background: Pacing parameters may influence pacing lead life and pacemaker life. This study sought to determine whether different right atrial active-fixation lead implantation parameters are associated with chronic pacing performance.

Methods: A retrospective observational study was conducted on all consecutive patients implanted with an active-fixation atrial lead at our institution from July 2014 to October 2016.

The correlation of pulmonary arterial hypertension with late recurrence of paroxysmal atrial fibrillation after catheter ablation.

Background: Paroxysmal atrial fibrillation (PAF) is one of the most common clinical arrhythmias. Although radiofrequency catheter ablation (RFCA) for the treatment of atrial fibrillation has continuously matured and developed in recent years, some patients treated with RFCA continued to have atrial fibrillation recurrence, and the recurrence rate was high. Determining indicators to predict the recurrence of PAF after RFCA is significantly important for improving the surgical success rate and guiding clinical work.

Telmisartan reduces atrial arrhythmia susceptibility through the regulation of RAS-ERK and PI3K-Akt-eNOS pathways in spontaneously hypertensive rats.

Telmisartan is an angiotensin II receptor blocker that displays unique PPAR-γ modulating activity. PPAR-γ agonists have been shown to decrease susceptibility to atrial fibrillation through their antioxidant and antiapoptotic effects. The aim of this study was to determine whether telmisartan would have a greater effect on susceptibility to atrial arrhythmia in a hypertensive rat model than valsartan, which is a traditional angiotensin II receptor blocker.

In vivo hepatocyte growth factor gene transfer reduces myocardial ischemia-reperfusion injury through its multiple actions.

Background: Hepatocyte growth factor (HGF) is reported to protect the heart against ischemia-reperfusion injury. However, whether in vivo adenovirus-mediated HGF gene transfer before ischemia is protective against ischemia-reperfusion and its precise mechanisms are still unknown.

Methods And Results: By using a rabbit model of ischemia-reperfusion injury, we demonstrate that HGF gene transfer is cardioprotective through its multiple beneficial actions, such as angiogenesis, Bcl-2 overexpression, and decreasing hydroxyl radicals, deoxyuride-5'-triphosphate biotin nick end labeling (TUNEL)-positive myocytes, and fibrotic area.

Nicorandil improves post-ischemic myocardial dysfunction in association with opening the mitochondrial K(ATP) channels and decreasing hydroxyl radicals in isolated rat hearts.

Background: Nicorandil has been reported to induce cardioprotection by opening the mitochondrial K(ATP) channels. However, whether nicorandil affects reactive oxygen species is unclear.

Methods And Results: The hearts of male Sprague-Dawley rats were excised and perfused on a Langendorff apparatus with Krebs-Henseleit solution with a gas mixture of 95% O(2) and 5% CO(2).

Edaravone reduces myocardial infarct size and improves cardiac function and remodelling in rabbits.

1. In the present study, we investigated the effect of 3-methyl-1-phenyl-2-pyrazolin-5-one (edaravone), a free radical scavenger, on myocardial infarct (MI) size and cardiac function in an in vivo model of MI in rabbits. We further investigated the contribution of hydroxyl radicals, superoxide and nitric oxide (NO) to its effects.

[Study on effect of ginsenoside Rg1 in promoting myocardiac vascular endothelial cell regeneration through induction on bone marrow stem cell's migration and differentiation in rabbits of myocardial infarction].

Objective: To observe whether ginsenoside Rg1 could reduce the infarcted area and improve the heart function by path of promoting bone marrow stem cells differentiated to vascular endothelial cells (VECs).

Methods: Bone marrow was drawn from rabbit's ilium and labelled with red fluorochrome DiI, then it was transferred again into the rabbit's body. The rabbits was then made into myocardiac infarction model.

The anti-diabetic drug miglitol is protective against anginal ischaemia through a mechanism independent of regional myocardial blood flow in the dog.

1. In the present study, we attempted to clarify whether the antidiabetic drug miglitol, an alpha-glucosidase inhibitor, has a protective effect against anginal ischaemia. We had reported previously that miglitol reduces myocardial infarct size through inhibition of glycogenolysis during ischaemia in rabbits.

Cilnidipine, an N+L-type dihydropyridine Ca channel blocker, suppresses the occurrence of ischemia/reperfusion arrhythmia in a rabbit model of myocardial infarction.

Dihydropyridine Ca channel blockers are widely prescribed for the treatment of hypertension and coronary artery diseases, but it remains unknown whether these agents protect against arrhythmias. We investigated whether cilnidipine, an N+L-type Ca channel blocker, reduces the incidences of ventricular premature beats (VPBs) and, if so, via what mechanisms. Japanese white rabbits underwent 30 min of ischemia and 48 h of reperfusion.

Lindera strychnifolia is protective against post-ischemic myocardial dysfunction through scavenging hydroxyl radicals and opening the mitochondrial KATP channels in isolated rat hearts.

Lindera strychnifolia (tendai-uyaku), a medicinal plant, has long been used for the treatment of cardiac, renal and rheumatic diseases in Japan. We aim to clarify (1) whether L. strychnifolia is protective against post-ischemic myocardial dysfunction, and (2) whether its effect is related to scavenging hydroxyl radicals and opening the mitochondrial KATP channels in isolated rat hearts.

Benidipine reduces myocardial infarct size involving reduction of hydroxyl radicals and production of protein kinase C-dependent nitric oxide in rabbits.

Japanese white rabbits underwent 30 minutes of ischemia and 48 hours of reperfusion. Benidipine (3 or 10 microg/kg, i.v.

Acceleration of the healing process and myocardial regeneration may be important as a mechanism of improvement of cardiac function and remodeling by postinfarction granulocyte colony-stimulating factor treatment.

Background: We investigated whether the improvement of cardiac function and remodeling after myocardial infarction (MI) by granulocyte colony-stimulating factor (G-CSF) relates to acceleration of the healing process, in addition to myocardial regeneration.

Methods And Results: In a 30-minute coronary occlusion and reperfusion rabbit model, saline (S) or 10 microg x kg(-1) x d(-1) of human recombinant G-CSF (G) was injected subcutaneously from 1 to 5 days after MI. Smaller left ventricular (LV) dimension, increased LV ejection fraction, and thicker infarct-LV wall were seen in G at 3 months after MI.

Sheng-Mai-San is protective against post-ischemic myocardial dysfunction in rats through its opening of the mitochondrial KATP channels.

The present study used isolated rat hearts to investigate whether (1) Sheng-Mei-San (SMS), a traditional Chinese formulation comprising Radix Ginseng, Radix Ophiopogonis and Fructus Schisandrae, is protective against post-ischemic myocardial dysfunction, and (2) whether the cardioprotective effect of SMS is related to scavenging of hydroxyl radicals and opening the mitochondrial KATP channels. The excised hearts of male Sprague-Dawley rats were perfused on a Langendorff apparatus with Krebs-Henseleit solution with a gas mixture of 95% O2 and 5% CO2. Left ventricular end-diastolic pressure (LVEDP, mmHg), left ventricular developed pressure (LVDP, mmHg), +/-dP/dt (mmHg/s) and coronary flow (ml/min) were continuously monitored.