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Ultrasound-guided quadratus lumborum block in pediatrics: trans-muscular versus intra-muscular approach

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Abstract

Purpose

Quadratus lumborum (QL) block has four approaches. However, there is difference between the four approaches regarding efficacy, safety and adverse effects. The primary objective of this study is to compare the analgesic effect between trans-muscular and intra-muscular approaches of the QL block in pediatric patients for elective lower abdominal surgery.

Methods

54 patients aged between 1 and 6 years were enrolled. Patients of both genders were selected. The patients were randomly classified into two groups: Group TQL includes patients (27 patients) in whom bilateral QL block was performed using trans-muscular approach, and Group IQL (27 patients), which underwent bilateral QL block using an intra-muscular approach. The primary outcome measure was the number of patients who require rescue analgesia in the first 24 h. The secondary outcome measures were FLACC score, heart rate, non-invasive blood pressure at 2, 4, 6, 12, and 24 h postoperatively, and postoperative complications (e.g., quadriceps muscle weakness, local hematoma).

Results

In the first 24 h after surgery, 13 patients in the IQL group (48.1%) required rescue analgesia, whereas only five patients in the TQL group (18.5%) required rescue analgesia. The FLACC score was lower in the TQL group than the IQL group at all time intervals up to 24 h postoperatively. In the TQL group, eight patients (29.6%) developed quadriceps weakness; whereas, only one patient (3.7%) in the IQL group developed quadriceps weakness.

Conclusion

TQL is better than IQL in the analgesic efficacy following the pediatric lower laparotomy.

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Acknowledgements

I would like to acknowledge Dr. Mohamed Saied for the great help in postoperative data collection.

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Authors and Affiliations

  1. Department of Anesthesiology, Ain Shams University, 5 Abdel-Azim Salama Street, Nasr city, Cairo, 11727, Egypt

    Mostafa M. Hussein

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  1. Mostafa M. Hussein
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Correspondence to Mostafa M. Hussein.

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Hussein, M.M. Ultrasound-guided quadratus lumborum block in pediatrics: trans-muscular versus intra-muscular approach. J Anesth 32, 850–855 (2018). https://doi.org/10.1007/s00540-018-2563-z

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  • DOI: https://doi.org/10.1007/s00540-018-2563-z

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