Evaluation of the Learning Curve of Endotracheal Intubation with Videolaryngoscopes: McGrathMAC, UESCOPE, and Airtraq by Young Anesthesiology Residents - Randomized, Controlled, Blinded Crossover Study.

Background: Videolaryngoscopes increased the safety of patients requiring endotracheal intubation. Their particular beneficiaries are healthcare providers inexperienced in intubation. We compared the learning curve of McGrath, UESCOPE, and Airtraq VLs among the first-year anesthesiology residents.

Electrogram fractionation in murine HL-1 atrial monolayer model.

Background: Complex fractionated atrial electrograms have been suggested as important targets for catheter ablation of atrial fibrillation. The etiology and the mechanism of these signals have not been completely elucidated because of limitations of interpretation of these signals in relation to simultaneously acquired signals in the neighboring atrial tissue.

Objective: This study sought to study the origin of electrogram fractionation under the conditions of rotor formation and wave fragmentation, using atrial monolayer preparations.

c-Myb-dependent smooth muscle cell differentiation.

Both in vitro and in vivo studies have implicated the c-Myb transcription factor in vascular smooth muscle cell (SMC) proliferation and hematopoiesis. However, its role in differentiation and maturation of contractile, as opposed to proliferating, SMCs has not been investigated. Here we demonstrate that c-myb(-/-) embryonic stem cells (ESCs) are incapable of producing embryoid bodies (EBs) with spontaneously contracting SMCs but can differentiate into contracting cardiomyocytes unimpaired.