Relationship between quality of coronary collateral and myocardial viability in chronic total occlusion: a magnetic resonance study.

Revascularization of chronic total occlusion (CTO) is still debated regarding its indications and therapeutic benefits. Guidelines recommend patient selection based on ischemia detection and viability assessment. We aimed to investigate the relationship between the quality of coronary collaterals (CC), graded by Rentrop classification, and myocardial viability assessed by cardiovascular magnetic resonance (CMR).

Single versus double suspension sutures for selected cases of obstructive sleep apnea.

Objective: To compare the results of expansion pharyngoplasty using bilateral single palatal suspension sutures (SSS) versus double suspension sutures (DSS) for the treatment of selected cases of obstructive sleep apnea (OSA) with retropalatal collapse.

Methods: Patients were randomly categorized into two groups: the first group for whom bilateral SSS were performed and a second group for whom bilateral DSS were done. Snoring on the basis of the visual analog scale (VAS), Epworth Sleepiness Scale (ESS), apnea hypopnea index (AHI), lowest O saturation were assessed preoperatively and 6 months postoperatively in all patients.