Comparison of dipole-based and potential-based ECGI methods for premature ventricular contraction beat localization with clinical data.

Localization of premature ventricular contraction (PVC) origin to guide the radiofrequency ablation (RFA) procedure is one of the prominent clinical goals of non-invasive electrocardiographic imaging. However, the results reported in the literature vary significantly depending on the source model and the level of complexity in the forward model. This study aims to compare the paced and spontaneous PVC localization performances of dipole-based and potential-based source models and corresponding inverse methods using the same clinical data and to evaluate the effects of torso inhomogeneities on these performances.

Night shift work experiences among Iranian nurses: a qualitative study.

Aim: To describe the perceptions held by Iranian registered nurses (IRNs) concerning their night shift work experiences.

Background: Due to the nature of nursing work and the need for 24-h coverage every day, the majority of nurses work night shifts in their professional practice. Evidence from several studies indicates that night working is a challenge for most nurses.