داپلر و کاربرد آن در تنگی و نارسائی میترال

توانایی اکوکاردیوگرافی داپلر در تخمین فشار پرشدگی بطن چپ در تنگی دریچه میترال

Background: Estimation of Left Ventricular End Diastolic Pressure (LVEDP) among patients with Mitral Stenosis (MS) helps to diagnose diastolic dysfunction and to explain their symptoms. However, Conventional Doppler measurements have limitation in predicting of LVEDP. This study sought to establish whether the correlation between measurements derived from Tissue Doppler echocardiography and LVE...

سیروپرونستیک تنگی میترال

Degenerate Four Wave Mixing in Photonic Crystal Fibers

In this study, Four Wave Mixing (FWM) characteristics in photonic crystal fibers are investigated. The effect of channel spacing, phase mismatching, and fiber length on FWM efficiency have been studied. The variation of idler frequency which obtained by this technique with pumping and signal wavelengths has been discussed. The effect of fiber dispersion has been taken into account; we obtain th...

تنگی دریچه میترال و عمل کومیسوروتومی

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ترمیم تنگی دریچه میترال بطریقه بسته، CMCV و ترمیم تنگی دریچه میترال با بالون PTMC و کاربرد هر یک از آنها

The History of closed mitral valve comissurotomy (CMVC) and its indication is discussed in this article. However many of the patients undergo (PTMC) these days as a new procedure and of course more effective and easier way whenever is indicated, yet, (CMCV) should be considered as a simple, and effective surgery when indicated, especialy in third world countries in which economical, social and ...

جراحی قلب (1) در تنگی دریچه میترال