Clinical Application of Superior Vena Cava Spectra in Evaluation of Pulmonary Hypertension: A Comparative Echocardiography and Catheterization Study.

This study was designed to assess whether superior vena cava (SVC) Doppler flow velocities are associated with invasive measures of pulmonary arterial pressure. Eighty patients with unrepaired congenital heart disease who underwent cardiac catheterization were included (31 men, 49 women; mean age: 37.3 ± 14.

Hemodynamic changes of the middle hepatic vein in patients with pulmonary hypertension using echocardiography.

The aim of this study was to analyze the changes of the middle hepatic vein (MHV) spectra in patients with pulmonary hypertension (PH) caused by congenital heart disease (CHD) and determine the proper parameters of MHV to predict PH. Eighty patients with CHD were included, whose pulmonary artery pressure was measured via right heart catheterization, and the MHV spectra were detected via echocardiography. The peak value of velocity (V) and velocity time integral (VTI) of the waves, including S wave, D wave and A wave, were measured at the end of inspiration.

Promotion of artery occlusion in dogs by percutaneous rotational atherectomy.

Background: This study aims to offer experimental data and indirect evidences for the application of percutaneous rotational atherectomy to treat patent ductus arteriosus (PDA).

Methods: Eleven dogs (6 male dogs and 5 female dogs; aged 14-20 months, with an average of 16.7±3.

[Clinical analysis of transcatheter closure of atrial septal defects in elderly patients].

Objective: To evaluate the clinical feature of patients with atrial septal defects (ASD) and the safety and efficacy of transcatheter closure of ASD in elderly patients.

Methods: Between May 2000 and June 2010, 82 patients aged (64.5 ± 3.

[Short- and mid-term outcomes of arrhythmia after transcatheter and surgical closure of membranous ventricular septal defects: a comparative analysis].

Objective: To evaluate the short- and mid-term outcomes of arrhythmia in patients undergoing transcatheter and surgical closure of membraneous ventricular septal defect (VSD).

Methods: 358 VSD patients, 161 male and 197 female, aged (11 +/- 8), underwent transcatheter closure and 50 sex, age, body weight, size of membranous VSD, and percentage of complicated membranous aneurysm-matched VSD patients underwent surgical closure. Electrocardiography was conducted 1, 3, 6, and 12 months after VSD closure.

[Risk factors for early arrhythmias post transcatheter closure of perimembranous ventricular septal defects].

Objective: To analyze the risk factors for early arrhythmias after transcatheter closure of perimembranous ventricular septal defect (PVSD).

Methods: A total of 358 patients [161 males, aged from 3 to 54, mean (10.9 +/- 8.

[Radiofrequency perforation and balloon valvuloplasty in infants with pulmonary atresia and intact ventricular septum].

Objective: To investigate the efficacy and safety of percutaneous radiofrequency perforation and valvuloplasty in infants with pulmonary atresia with intact ventricular septum (PA/IVS).

Methods: Four infants (body weight 4 - 10 kg) aged 11 months, 9 months, 12 days and 9 months old, respectively, were hospitalized for dyspnea and cyanosis. All patients had a continuous murmur in the left second intercostal space.

[Transcatheter closure of atrial septal defects in 40 pediatric patients].

Objective: To evaluate the clinical efficiency of transcatheter closure of atrial septal defect (ASD) with AGA-Amplatzer occlusion device in pediatric patients.

Methods: Forty patients with ASD, 16 males, 24 females, at a mean age of 10.2 years (ranged from 3 to 15 years of age) and with a mean weight of 35.