Clinical Associate Professor of Plastic Surgery, USC Keck School of Medicine, Los Angeles, CA.
dermatologist in private practice in Macon, GA.
Aesthet Surg J. 2020 Nov 19;40(12):NP686-NP693. doi: 10.1093/asj/sjaa052.
Several studies investigating high-intensity focused electromagnetic (HIFEM) treatments have recently been published. However, due to the novelty of the procedure, long-term data are still missing.
The aim of this study was to evaluate changes in abdominal tissues on average 1 year after a series of HIFEM treatments, to determine the long-term durability of patients' original body responses.
Magnetic resonance imaging (MRI) or computed tomography (CT) scanning were performed on 21 patients a mean of 332.6 [88.5] days after their original HIFEM treatment series. The scans were evaluated by a blinded radiologist for abdominal muscle thickness, subcutaneous fat changes, and abdominal separation. The results were compared with the MRI/CT-assisted measurements taken at baseline and 6-week follow-up. Correlations between collected data sets were calculated and tested. The incidence of any adverse events related to earlier treatments was monitored.
When comparing the 1-year follow-up measurements with the baseline, the MRI/CT-assisted calculations revealed mean reductions of 14.63% (2.97 [2.11] mm) in fat, 19.05% (1.89 [0.88] mm) in muscle thickening, and 10.46% (1.96 [1.71] mm) in diastasis recti. All changes were significant (P < 0.05) and not related to weight fluctuations (P > 0.05). The baseline width of diastasis positively correlated with the degree of improvement at follow-up. No adverse events were reported.
The HIFEM-induced muscle hypertrophy, fat reduction, and reduction in abdominal separation were maintained 1-year posttreatment. This suggests long-term durability of the original bodily response, which needs to be verified by continuing follow-up of this group and by further studies.
最近有几项关于高强度聚焦电磁场（HIFEM）治疗的研究已经发表。然而，由于该程序尚属新颖，长期数据仍存在缺失。
本研究旨在评估一系列 HIFEM 治疗后平均 1 年时腹部组织的变化，以确定患者原始身体反应的长期耐久性。
在原始 HIFEM 治疗系列结束后平均 332.6 [88.5] 天，对 21 名患者进行磁共振成像（MRI）或计算机断层扫描（CT）扫描。由一位盲法放射科医生评估腹部肌肉厚度、皮下脂肪变化和腹部分离。将结果与基线和 6 周随访时的 MRI/CT 辅助测量值进行比较。计算并测试了所收集数据集之间的相关性。监测与早期治疗相关的任何不良事件的发生。
将 1 年随访测量值与基线值进行比较，MRI/CT 辅助计算显示脂肪减少了 14.63%（2.97 [2.11] mm），肌肉增厚了 19.05%（1.89 [0.88] mm），腹直肌分离减少了 10.46%（1.96 [1.71] mm）。所有变化均具有统计学意义（P < 0.05），且与体重波动无关（P > 0.05）。基线腹直肌分离宽度与随访时的改善程度呈正相关。未报告不良事件。
HIFEM 引起的肌肉肥大、脂肪减少和腹直肌分离减少在治疗后 1 年仍得以维持。这表明原始身体反应具有长期耐久性，需要通过对该组的持续随访和进一步研究来验证。
