Visual-functional mismatch and results of fractional flow reserve guided percutaneous coronary revascularization.

Objective: To identify mismatches in the significance ofcoronary artery stenosis determined by physician 's visual estimation (VE) vs. quantitative coronary angiography (QCA), by VE vs. fractional flow reserve (FFR), and independent predictors for mismatch between VE and FFR.

Percutaneous coronary intervention in patients with anomalous origin of coronary artery.

Percutaneous coronary intervention in patients with anomalous origin of right coronary artery from left sinus of Valsalva was performed in Central Chest Institute during 2005-2009. The diagnosis of this type of congenital anomaly is always difficult, since it requires high operator's consideration and experience. Standard catheter curve desired for general coronary angiography is also not suitable for the abnormal origin of artery, especially when coronary intervention is to be performed.

Immediate, short and intermediate results of transcatheter closure of secondum-type atrial septal defect using Amplatzer septal occluder devices.

Objectives: To study the immediate, short, and intermediate results of transcatheter closure of secondum-type atrial septal defect using Amplatzer septal occluder devices (TCAA) in terms of clinical symptoms and residual lesions and shunts determined by transthoracic two-dimensional (TTE) and three-dimensional echocardiography (TDE).

Material And Method: Thirty-six patients, who underwent successful TCAA at the Chest Disease Institute between August 2002 and August 2007 and were followed up clinically, by TTE and TDE at day 1-3, 4-6 months, and 1-year post TCAA, were analyzed.

Results: TCAA was performed in 75 patients during the study period.

Feasibility and effectiveness of a novel vascular hemostatic device (Chula-clamp) after coronary angiography or percutaneous coronary intervention.

Background: Chula-clamp is a newly hydraulic vascular hemostatic device. The advantages of the device are convenience, reusability, and lessen patient discomfort and vascular complication. Furthermore, the device is assembled with a recycled balloon inflator and other locally made components, which make it less expensive than other commercially available hemostatic devices.