Primary safety results from the LEADLESS Observational Study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023884%3A_____%2F18%3A00007903" target="_blank" >RIV/00023884:_____/18:00007903 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1093/europace/eux359" target="_blank" >http://dx.doi.org/10.1093/europace/eux359</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/europace/eux359" target="_blank" >10.1093/europace/eux359</a>

Result language

angličtina

Original language name

Primary safety results from the LEADLESS Observational Study

Original language description

Aims A prospective, single-arm, multicentre, post-market study was conducted to confirm the short-term safety of the Nanostim (TM) leadless pacemaker (LP). In this study, we report the primary results of the LEADLESS Observational Study. Methods and results Subjects meeting VVIR pacemaker indications were enrolled and followed up after successful LP implantation, prior to discharge and post-implantation at 90 days, 180 days, and every 6 months thereafter for the assessment of adverse events. The primary safety endpoint was evaluated in terms of freedom from serious adverse device effects (SADEs) at 6 months in 300 subjects. Data for all enrolled subjects were also presented. A total of 470 subjects were enrolled (75.8 +/- 13.1 years, 62.8% male). The study paused in April 2014 following the occurrence of perforation events that led to changes in the protocol and investigator training. Freedom from SADEs, evaluated in 300 subjects enrolled post-pause, was 94.6% (95% confidence interval 91.0-97.2%) and demonstrated non-inferiority to a performance goal of 86% (P < 0.0001). Eighteen SADEs were observed in 16 (5.3%) subjects. The most frequently occurring events were cardiac perforation (1.3%), device dislodgement (0.3%), and vascular complications (1.3%). In the 470 subjects, 34 similar SADEs were observed in 31 (6.6%) subjects. After stratifying the results in relation to the study pause, there was a statistically significant difference in the final LP location (septum vs. apex) (P < 0.0001) and the number of repositioning attempts (< 2 vs. >= 2) (P = 0.05) and a decreasing trend in the rates of cardiac perforation and device dislodgement. Conclusion The primary safety endpoint at 6 months was successfully met for the Nanostim LP. The occurrence of cardiac perforation and device dislodgement declined after changes following the study pause.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30201 - Cardiac and Cardiovascular systems

Project

—

Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Europace

ISSN

1099-5129

e-ISSN

—

Volume of the periodical

20

Issue of the periodical within the volume

9

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

1491-1497

UT code for WoS article

000444551400019

EID of the result in the Scopus database

2-s2.0-85052564211