ヤザキ　キヨウイチロウ   Yazaki Kiyouichirou   矢崎　恭一郎    所属   医学部 医学科（東京女子医科大学病院）    職種   助教
言語種別	日本語
発表タイトル	Clinical Features of Elderly Patients Implanted with a Leadless Pacemaker: Results from Two High Volume Institutes
会議名	第83回日本循環器学会学術集会
主催者	日本循環器学会
学会区分	全国規模の学会
発表形式	ポスター掲示
講演区分	一般
発表者・共同発表者	◎柳下大悟, 庄田守男, 岡田綾子, 樋口諭, 矢崎恭一郎, 金井美和, 江島浩一郎, 萩原誠久
発表年月日	2019/03/29
開催地 （都市, 国名）	横浜市
概要	*Poster Session (Japanese)31 Leadless Pacemaker Background: Indications of leadless pacemaker (LP) in elderly patients may vary according to its potential benefits although LP is limited to VVI pacing. Objective: The purpose of this study was to elucidate clinical features in elderly patients with LP. Methods: Forty-seven consecutive patients who underwent LP implantation in two high-volume centers were enrolled. The patients were divided into elderly group (≥85 years, EG) and non-elderly group (<85 years, non-EG) to compare clinical and procedural characteristics. Results:The mean age was 89.5±3.4 in EG (N=21), and 72.3±8.1 in non-EG (N=26). The LP indication for atrial fibrillation with bradycardia was significantly less in EG than NEG (29.2% vs 70.8%, P<0.05). EG had significantly smaller height (152.0±7.6cm vs 159.4±10.2cm, P<0.01), while body weight was similar. The prevalence of dementia was significantly higher in EG (73.3% vs 26.7%, P<0.05). The number of risk factors reported to be associated with cardiac perforation/effusion was significantly more in EG compared to non-EG (3.3±1.2 vs 1.9±1.0, P<0.01). However, there were no significant differences in procedure time, number of deployment, and pacing data between two groups. Major complication was observed in 8 patients as follows; pericardial effusion due to temporary pacing wire in 1, high pacing threshold in 1, unsuccessful implantation in 1, and groin hematoma in 5 patients. There was no significant difference in the complication rate between two groups. Conclusion: LP implantation procedure was safely performed in both groups although EG had more risk factors of cardiac perforation/effusion. Careful attention should be paid for the indication and the implantation procedure of LP in elderly patients.