Quadricuspid pulmonary valve complicated with aneurysm of pulmonary trunk diagnosed with ECG-gated computed tomography.

Quadricuspid pulmonary valve (QPV) is an uncommon congenital defect reported in the general population with a frequency of up to 0.25%. The defect usually does not cause severe clinical complications and its presence frequently remains clinically silent.

Percutaneous angioplasty of chronically occluded coronary arteries: long-term clinical follow-up.

Background: Percutaneous coronary intervention (PCI) of a chronic total occlusion (CTO) is one of the most demanding procedures in interventional cardiology. In spite of growing experience and technological progress, efficacy of PCI of CTO remains lower than that of standard PCI.

Aim: To evaluate long-term clinical results of PCI in patients with stable angina and CTO.

[Factors influencing signal-averaged ECG parameters in hemodialysis patients].

The aim of the present study was to estimate the influence of hemodialysis process (HD) on the signal-averaged ECG (SAECG) parameters and to evaluate possible factors promoting SAECG parameters disturbances in the group of hemodialysis patients (HD-pts). 55 selected HD-pts entered the study. SAECG parameters (QRS duration, root-mean-square of the terminal 40 ms of the QRS--RMS40, low-amplitude signal duration--LAS40), were measured pre and postdialysis.

Effect of haemodialysis on signal-averaged electrocardiogram P-wave parameters.

Background: The P-wave signal-averaged electrocardiogram (SAECG) is a non-invasive technique considered to indicate an increased risk for paroxysmal atrial fibrillation. The study was designed to evaluate the effect of the haemodialysis (HD) process on SAECG parameters in the group of selected HD patients.

Methods: Forty-seven HD patients (without relevant cardiac diseases) were included.