Effect of rate-adaptive atrial support compared to VDD pacing in cardiac resynchronization therapy recipients: A randomized cross-over study.

Background: Cardiac resynchronization therapy (CRT) is a cornerstone treatment for heart failure, yet the optimal pacing mode remains uncertain. This study investigates the impact of DDDR (rate-adaptive atrial support) versus VDD pacing modes on functional capacity and echocardiographic outcomes in patients with CRT-defibrillators.

Methods: In a multicenter, double-blind, crossover trial, 26 sinus rhythm patients undergoing CRT-defibrillator implantation were randomized to DDDR at 60 beats-per-minute or VDD at 30 beats-per-minute.

Genome location, evolution and centromeric contribution of satellite DNAs shared between the two closely related species Drosophila serido and D. antonietae (repleta group, buzzatii cluster).

Satellite DNAs are highly repetitive, tandemly arranged sequences, typically making up large portions (> 20%) of the eukaryotic genome. Most satDNAs are fast evolving and changes in their abundance and nucleotide composition may be related to genetic incompatibilities between species. Here, we used Illumina paired-end sequencing raw data and graph-based read-clustering with the TAREAN bioinformatic tool to study the satDNAs in two cactophilic neotropical cryptic species of Drosophila from the buzzatii cluster (repleta group), D.

Intratympanic Gentamicin Injection for Endolymphatic Hydrops After Cochlear Implantation.

Endolymphatic hydrops has been documented as a possible complication of cochlear implantation; however, few studies have addressed its treatment. We describe the first case ever reported of delayed endolymphatic hydrops after a cochlear implant successfully treated with intratympanic gentamicin injection. A detailed discussion of this case with a focus on its management and outcomes will be provided in comparison with literature data.

Consensus paper on the management of acute isolated vertigo in the emergency department.

Acute vertigo is defined as the perception of movement of oneself or the surroundings in the absence of actual motion and it is a frequent cause for emergency department admissions. The utilization of medical resources and the duration of hospital stay for this kind of symptom is high. Furthermore, the efficiency of brain imaging in the acute phase is low, considering the limited sensitivity of both CT and MRI for diagnosing diseases that are the causes of central type of vertigo.