Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi, People's Republic of China.
Department of Cardiology, The Fifth Affiliated Hospital of Guangxi Medical University, Nanning, 530022, Guangxi, People's Republic of China.
J Cardiothorac Surg. 2024 Apr 6;19(1):187. doi: 10.1186/s13019-024-02658-2.
To analyze the relationship between the thickness of the left atrial posterior wall and the low and no voltage zones in the left atrial posterior wall in patients with atrial fibrillation (AF).
61 patients admitted to our cardiology department for AF and radiofrequency ablation of AF from January 1, 2020 to May 30, 2022 were enrolled according to inclusion and exclusion criteria. The atrial wall thickness was measured by CT scan. Baseline data, preoperative cardiac ultrasound data, preoperative biochemical parameters, low voltage zone (fibrotic zone) and no voltage zone (scar zone) in the left atrial posterior wall area, and various parameters of posterior left atrial wall thickness were collected.
The differences of the thickness between the upper, middle and lower mean levels of the left atrial posterior wall were statistically significant (P = 0.004). The results showed that body mass index was weakly positively correlated with the mean level of total left atrial posterior wall thickness (r = 0.426, P = 0.001) and was statistically significant. The remaining indices were positively or negatively correlated with the mean level of total left atrial posterior wall thickness, but none were statistically significant (P > 0.05).
Both left atrial posterior wall low-voltage zone and voltage-free zone were positively correlated with the mean total left atrial posterior wall thickness, and left atrial posterior wall low-voltage zone and voltage-free zone were significantly positively correlated. Body mass index was weakly positively correlated with total left atrial posterior wall thickness.
分析心房颤动（AF）患者左心房后壁厚度与左心房后壁低电压区和无电压区的关系。
根据纳入和排除标准，选取 2020 年 1 月 1 日至 2022 年 5 月 30 日期间因 AF 及 AF 射频消融术入住我院心内科的 61 例患者。采用 CT 扫描测量心房壁厚度。收集基线资料、术前心脏超声资料、术前生化参数、左心房后壁低电压区（纤维化区）和无电压区（瘢痕区）及左心房后壁各部位厚度的各项参数。
左心房后壁上、中、下平均水平的厚度差异有统计学意义（P=0.004）。结果显示，体重指数与总左心房后壁厚度的平均水平呈弱正相关（r=0.426，P=0.001），且具有统计学意义。其余指数与总左心房后壁厚度的平均水平呈正相关或负相关，但均无统计学意义（P>0.05）。
左心房后壁低电压区和无电压区与总左心房后壁厚度的平均水平均呈正相关，且左心房后壁低电压区和无电压区与总左心房后壁厚度的相关性显著。体重指数与总左心房后壁厚度呈弱正相关。
