The Clinical Significance of Systolic Retraction of the Apical Impulse.

The apexcardiogram in patients with systolic prolapse of the mitral valve.

Fifteen patients with the clinical and phonocardiographic finding of a nonejection click initiating a late systolic murmur had apexcardiograms (ACG) performed. In every case, the inward motion of the apex normally inscribed between aortic valve opening and closure was interrupted by either a notch or a second systolic wave, the onset of which occurred at the time of the click. This ACG finding ...

Retraction note: Association between T-786C polymorphism of endothelial nitric oxide synthase gene and level of the vessel dilation factor in patients with coronary artery disease

بررسی نقش زاویه قطع ریشه در میزان ریزنشت آپیکال متعاقب استفاده از آمالگام و MTA

Background and Aim: Achieving appropriate seal in canal obturation is the main goal of endodontic therapy. However, in some cases, it can not be obtained by non-surgical procedures alone. Retrograde surgery is one of the most common procedures in endodontics. Apical seal improvement can be obtained by root end filling and decreasing the root end resection angle (bevel angle). The aim of this st...

Echocardiographic assessment of myocardial infarction: comparison of a rat model in two strains

The purpose of this study was to induce myocardial infarction (MI) and compare the echocardiographic parameters and mortality ratio of Lewis inbred and Wistar outbred strain before and after the procedure to help choose the best one for MI studies. In this study MI was induced in 46 Lewis and 34 Wistar by occlusion of left anterior descending artery (LAD). Doppler, two-dimensional (2-D) and 2-D...

The Role of Root Canal Preparation on Apical Geometry: A Review of the Literature

The amounts of apical enlargement have been a controversial issue for a long time. The enlargement of the apical part of the canal may severely impact the endodontic prognosis. Enlargement of the apical portion to a larger size may negatively affect the ability to control the filling material during root canal obturation. In addition, an open-apex increases the risk for overfilling which has be...