Abstract：
BACKGROUND: Continuous peripheral nerve blocks are commonly used for pain management. However, the incidence of catheter dislodgement or migration is unclear, and may be underestimated and underreported. Our objective was to assess suprascapular catheter tip positioning before and after routine simulated shoulder physiotherapy manipulation in an anatomical cadaver model.
METHODS: Eight ultrasound-guided continuous suprascapular nerve block catheters were placed in cryopreserved fresh cadavers. Computed tomography (CT) confirmed the location of the catheter tip after injection of 1 ml of contrast medium. We performed a series of standardized shoulder movements during a simulated shoulder physiotherapy session in cadavers. Following this, we administered 1 ml of methylene blue through the catheters, and then performed anatomical dissections to accurately identify the location of the catheter tips and compare them to their placement prior to the \'physiotherapy\'.
RESULTS: CT imaging confirmed the location of the catheter tips at the suprascapular notch in all cases. However, following physiotherapy, 2 catheters (25%) were found to have migrated - specifically, 1 was located in the supraspinatus muscle, and the other was located in the trapezius muscle.
CONCLUSIONS: Our findings suggest that catheter dislodgement may occur in approximately 25% of cases following simulated physiotherapy manipulation. However, further research is needed to determine the read incidence of catheter dislodgement in clinical practice.
METHODS: Eight ultrasound-guided continuous suprascapular nerve block catheters were placed in cryopreserved fresh cadavers. Computed tomography (CT) confirmed the location of the catheter tip after injection of 1 ml of contrast medium. We performed a series of standardized shoulder movements during a simulated shoulder physiotherapy session in cadavers. Following this, we administered 1 ml of methylene blue through the catheters, and then performed anatomical dissections to accurately identify the location of the catheter tips and compare them to their placement prior to the \'physiotherapy\'.
RESULTS: CT imaging confirmed the location of the catheter tips at the suprascapular notch in all cases. However, following physiotherapy, 2 catheters (25%) were found to have migrated - specifically, 1 was located in the supraspinatus muscle, and the other was located in the trapezius muscle.
CONCLUSIONS: Our findings suggest that catheter dislodgement may occur in approximately 25% of cases following simulated physiotherapy manipulation. However, further research is needed to determine the read incidence of catheter dislodgement in clinical practice.
摘要：
背景：连续外周神经阻滞通常用于疼痛管理。然而,导管移位或移位的发生率尚不清楚，可能被低估和低估。我们的目的是评估解剖尸体模型中常规模拟肩部理疗操作之前和之后的肩胛骨上导管尖端定位。
方法：将8个超声引导下连续肩胛骨上神经阻滞导管放置在冷冻保存的新鲜尸体中。计算机断层扫描（CT）确认了注射1ml造影剂后导管尖端的位置。在尸体的模拟肩部理疗过程中，我们进行了一系列标准化的肩部运动。在此之后,我们通过导管给药1ml亚甲蓝，然后进行解剖解剖，以准确识别导管尖端的位置，并将其与“理疗”之前的位置进行比较。结果：在所有情况下，CT成像均确认了导管尖端在肩胛骨上切迹处的位置。然而,理疗后,发现2根导管(25%)迁移-特别是1位于冈上肌，另一个位于斜方肌。
结论：我们的研究结果表明，在模拟物理治疗操作后，约25%的病例可能发生导管移位。然而,需要进一步的研究来确定临床实践中导管移位的读取发生率.
方法：将8个超声引导下连续肩胛骨上神经阻滞导管放置在冷冻保存的新鲜尸体中。计算机断层扫描（CT）确认了注射1ml造影剂后导管尖端的位置。在尸体的模拟肩部理疗过程中，我们进行了一系列标准化的肩部运动。在此之后,我们通过导管给药1ml亚甲蓝，然后进行解剖解剖，以准确识别导管尖端的位置，并将其与“理疗”之前的位置进行比较。结果：在所有情况下，CT成像均确认了导管尖端在肩胛骨上切迹处的位置。然而,理疗后,发现2根导管(25%)迁移-特别是1位于冈上肌，另一个位于斜方肌。
结论：我们的研究结果表明，在模拟物理治疗操作后，约25%的病例可能发生导管移位。然而,需要进一步的研究来确定临床实践中导管移位的读取发生率.
