Relationship between exercise induced elevation of left ventricular filling pressure and exercise intolerance in patients with atrial fibrillation.

Background: Elevated left ventricular filling pressure (LVFP) is an important cause of exercise intolerance in patients with atrial fibrillation (AF). Exercise stress echocardiography could assess LVFP during exercise. The objective of this study was to investigate the relationship between exercise induced elevation of LVFP and exercise capacity in patients with AF.

Correlation between growth differentiation factor-15 and collagen metabolism indicators in patients with myocardial infarction and heart failure.

Background: Growth differentiation factor (GDF)-15, a divergent member of the transforming growth factor beta super-family does appear to be up-regulated in response to experimental pressure overload and progression of heart failure (HF). HF frequently develops after myocardial infarction (MI), contributing to worse outcome. The aim of this study is to assess the correlation between GDF-15 levels and markers related to collagen turnover in different stages of HF.

[Anorexia with sinus bradycardia: a case report].

As anorexia patients always go to the psychiatric clinic, little is concerned about the occurrence of sinus bradycardia in these patients for cardiologists and psychiatrists. The aim of this paper is to discuss the relationship between anorexia and sinus bradycardia, and the feature analysis, differential diagnosis and therapeutic principles of this type of sinus bradycardia. We report a case of sinus bradycardia in an anorexia patient with the clinical manifestations, laboratory exams, auxiliary exams, therapeutic methods, and her prognosis, who was admitted to Peking University Third Hospital recently.

[Evaluation of arterial elasticity in initial hypertension by pulse wave velocity and wave intensity technique].

Objective: To explore the early changes of arterial elasticity in initial hypertension through two different methods.

Methods: A total of 76 hypertensive patients (Grade 1-2, n = 32) were assigned into hypertension group while the age and gender-matched healthy population was selected as normal group (n = 44). All of them were monitored for baPWV in right carotid artery by wave intensity technique.

[Prognostic values for in-hospital event rate of early E/Em in patients with acute myocardial infarction].

Objective: To assess the prognostic values for in-hospital event rate of tissue Doppler imaging (TDI) parameter (E/Em) after acute myocardial infarction.

Methods: A total of 289 patients with acute myocardial infarction were retrospectively examined. Their clinical data and echocardiograms were obtained.

[The evaluation of left ventricular diastolic function by tissue Doppler echocardiography in essential hypertension].

Objective: To evaluate Left ventricular(LV) diastolic function in essential hypertension by conventional pulse-wave Doppler echocardiography (cPWD) and Doppler tissue imaging (DTI) and compare the two modalities.

Methods: Two hundred patients with essential hypertension were classified as NLVH subgroup (n = 160) and LVH subgroup (n = 40) based on left ventricular mass index (LVMI) with one hundred and sixty health subjects as control group. The mitral valve flow pattern (MVFP) was obtained.