Clinical and Echocardiographic Characteristics of Left Atrial Diverticulum

IF 1.6 4区医学 Q3 CARDIAC & CARDIOVASCULAR SYSTEMS

Echocardiography-A Journal of Cardiovascular Ultrasound and Allied Techniques Pub Date : 2025-05-13 DOI:10.1111/echo.70200

Yoshihito Saijo, Hirotsugu Yamada, Natsumi Yamaguchi, Susumu Nishio, Robert Zheng, Tomonori Takahashi, Tomoya Hara, Muneyuki Kadota, Yutaka Kawabata, Rie Ueno, Tomomi Matsuura, Takayuki Ise, Koji Yamaguchi, Shusuke Yagi, Takeshi Soeki, Tetsuzo Wakatsuki, Masataka Sata

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引用次数: 0

Abstract

Background

Remarkable advancements in cardiac computed tomography (cCT) have provided new insights into previously undescribed anatomical structures, such as the left atrial diverticula (LADs). The aims of the present study were to assess the characteristics of LADs and their relationship with cardiac function.

Methods

We analyzed consecutive patients who underwent preprocedural cCT and transthoracic echocardiography (TTE) for catheter ablation of paroxysmal or persistent atrial fibrillation between January 2020 and 2022. LADs were identified on cCT as smooth contoured protrusions extending from the left atrial wall. LADs were classified as cystiform (body length/orifice width ratio <2) or tubiform (body length/orifice width ratio ≥2), and their volume was measured.

Results

Among 201 patients (mean age: 65 ± 12 years, 66% male), 124 LADs were detected in 105 patients, with 19 patients having two LADs each. Of these, 99 (80%) were classified as cystiform, and 25 (20%) as tubiform. No statistically significant differences were observed in the clinical and echocardiographic characteristics between patients with and without LADs. Log-transformed volume of tubiform LADs showed a moderate correlation with age (R = 0.62; p = 0.001), and mild correlations with LA volume index (R = 0.40; p = 0.05), and E/e′ (R = 0.44; p = 0.027). However, no such associations were observed for cystiform LADs.

Conclusions

LADs were present in approximately half of the patients, with no significant association between LADs prevalence and clinical or echocardiographic characteristics. However, the relationship between LAD volume and cardiac function varied depending on the LAD subtypes.

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左房憩室的临床及超声心动图特征

背景：心脏计算机断层扫描（cCT）的显著进步为以前未描述的解剖结构（如左房憩室（LADs））提供了新的见解。本研究的目的是评估lad的特征及其与心功能的关系。方法：我们分析了2020年1月至2022年1月期间连续接受术前cCT和经胸超声心动图（TTE）导管消融治疗阵发性或持续性心房颤动的患者。lad在cCT上被识别为从左房壁延伸出来的光滑轮廓突出物。将lad分为囊状（体长/孔宽比<；2）和管状（体长/孔宽比≥2），并测量其体积。结果201例患者（平均年龄65±12岁，男性66%），105例患者中检测到124例lad，其中19例患者均有2例lad。其中99例（80%）为囊状，25例（20%）为管状。合并和未合并lad患者的临床和超声心动图特征无统计学差异。管状lad的对数转换体积与年龄呈中等相关性(R = 0.62；p = 0.001)，与LA容积指数呈轻度相关(R = 0.40；p = 0.05), E/ E′(R = 0.44；p = 0.027)。然而，在囊状lad中没有观察到这种关联。结论：大约一半的患者存在lad， lad患病率与临床或超声心动图特征无显著相关性。然而，LAD体积与心功能之间的关系因LAD亚型而异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Echocardiography-A Journal of Cardiovascular Ultrasound and Allied Techniques 医学-心血管系统

CiteScore

2.40

自引率

6.70%

发文量

211

审稿时长

3-6 weeks

期刊介绍： Echocardiography: A Journal of Cardiovascular Ultrasound and Allied Techniques is the official publication of the International Society of Cardiovascular Ultrasound. Widely recognized for its comprehensive peer-reviewed articles, case studies, original research, and reviews by international authors. Echocardiography keeps its readership of echocardiographers, ultrasound specialists, and cardiologists well informed of the latest developments in the field.