No Longterm Severe Thyroid Dysfunction Seen In Patients With Preexisting Reduced Serum Tt3 Concentrations After A Single Large Dose Of Iodinated Contrast.

Objective: After an intravenous bolus injection of 100 mL of iodinated contrast agent (370 mgI/mL), the amount of iodine atoms entering the blood is tens of thousands of times the daily dose of iodine recommended by the World Health Organization. However, the effect of iodinated contrast in patients with nonthyroidal illness, manifested as reduced serum total triiodothyronine (TT3) concentrations, is unclear. We studied the effect of iodinated contrast on thyroid function and auto-antibodies in patients with reduced TT3 after diagnosis and treatment of coronary heart disease.

Feasibility of Atrial AutoCapture™ to Detect Atrial Evoked Response: Experience from 102 Patients Implanted with Dual-chamber Pacemakers.

Background: Atrial AutoCapture™ (ACap™) was a new technological development that confirmed atrial capture by analyzing evoked response (ER) with a new method - paced depolarization integral ER detection - and optimized energy output to changes in the stimulation threshold. The purpose of this study was to evaluate the clinical performance of ACap™ function.

Methods: This was a prospective, observational, nonrandomized two-center study.