Ultrasound-assisted middle thoracic epidural catheter placement utilizing the most dorsal sites of bilateral transverse process roots as anatomical landmarks: A cadaveric observational study and a clinical randomized controlled trial

We developed an innovative method for ultrasound-assisted thoracic epidural catheter placement and assessed its potential to reduce procedural duration for trainees. A cadaveric observational study and a clinical randomized controlled trial. Sapporo Medical University Hospital. A total of 52 adult p...

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Veröffentlicht in:Journal of clinical anesthesia 2025-02, Vol.101, p.111740, Article 111740
Hauptverfasser: Kunigo, Tatsuya, Yoshikawa, Yusuke, Niki, Shunichi, Ohtani, Masahiro, Muraki, Mami, Nitta, Asako, Ohsaki, Yuki, Nagaishi, Kanna, Yamakage, Michiaki
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container_title Journal of clinical anesthesia
container_volume 101
creator Kunigo, Tatsuya
Yoshikawa, Yusuke
Niki, Shunichi
Ohtani, Masahiro
Muraki, Mami
Nitta, Asako
Ohsaki, Yuki
Nagaishi, Kanna
Yamakage, Michiaki
description We developed an innovative method for ultrasound-assisted thoracic epidural catheter placement and assessed its potential to reduce procedural duration for trainees. A cadaveric observational study and a clinical randomized controlled trial. Sapporo Medical University Hospital. A total of 52 adult patients scheduled for thoracic or abdominal surgery and four cadavers. Patients were randomly assigned to either group receiving conventional palpation (conventional group) or combination of the ultrasound examination and conventional palpation (ultrasound group). The primary outcome was total procedure time (sum of skin marking time and needling time) by trainees. The secondary outcomes were (1) skin marking time, (2) needling time, (3) multiple skin punctures, (4) needle redirection, (5) complications, and (6) failed cases. Through dissection of four cadavers, the most dorsal site of the transverse process root was identifiable by ultrasound and the reliable indicator of the interlaminar space. We devised ultrasound-assisted middle thoracic epidural catheter placement utilizing the most dorsal sites of bilateral transverse process roots as anatomical landmarks. Trainees in the ultrasound group had significantly longer skin marking time and significantly shorter needling time than those in the conventional group (107 [87–158] vs 46 s [34–54] s, p 
doi_str_mv 10.1016/j.jclinane.2024.111740
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A cadaveric observational study and a clinical randomized controlled trial. Sapporo Medical University Hospital. A total of 52 adult patients scheduled for thoracic or abdominal surgery and four cadavers. Patients were randomly assigned to either group receiving conventional palpation (conventional group) or combination of the ultrasound examination and conventional palpation (ultrasound group). The primary outcome was total procedure time (sum of skin marking time and needling time) by trainees. The secondary outcomes were (1) skin marking time, (2) needling time, (3) multiple skin punctures, (4) needle redirection, (5) complications, and (6) failed cases. Through dissection of four cadavers, the most dorsal site of the transverse process root was identifiable by ultrasound and the reliable indicator of the interlaminar space. 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A cadaveric observational study and a clinical randomized controlled trial. Sapporo Medical University Hospital. A total of 52 adult patients scheduled for thoracic or abdominal surgery and four cadavers. Patients were randomly assigned to either group receiving conventional palpation (conventional group) or combination of the ultrasound examination and conventional palpation (ultrasound group). The primary outcome was total procedure time (sum of skin marking time and needling time) by trainees. The secondary outcomes were (1) skin marking time, (2) needling time, (3) multiple skin punctures, (4) needle redirection, (5) complications, and (6) failed cases. Through dissection of four cadavers, the most dorsal site of the transverse process root was identifiable by ultrasound and the reliable indicator of the interlaminar space. We devised ultrasound-assisted middle thoracic epidural catheter placement utilizing the most dorsal sites of bilateral transverse process roots as anatomical landmarks. Trainees in the ultrasound group had significantly longer skin marking time and significantly shorter needling time than those in the conventional group (107 [87–158] vs 46 s [34–54] s, p &lt; 0.001 and 197 [156–328] vs 341 [303–488] s, p = 0.003). Consequently, there was no significant difference between the two groups in total procedure time (326 [263–467] s vs 391 [354–533] s, p = 0.167). Moreover, the probability of trainee failure in epidural anesthesia was significantly lower in the ultrasound group (2/26 [17.7 %] vs 10/26 [38.5 %], p = 0.019). Our novel technique for thoracic epidural catheter placement resulted in expedited needling and enhanced success rates among trainees, although there was no significant difference between total procedure time when using ultrasound guidance and that when using conventional palpation. •The most dorsal site of the transverse process root was identifiable by ultrasound.•The transverse process root was a reliable landmark of the interlaminar space.•We developed an innovative method for thoracic epidural catheter placement.•Our novel technique expedited needling among trainees.•Our novel technique enhanced success rates among trainees.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>39752792</pmid><doi>10.1016/j.jclinane.2024.111740</doi></addata></record>
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subjects Adult
Adults
Aged
Anatomic Landmarks
Anesthesia
Anesthesia, Epidural - methods
Anesthesiology
Cadaver
Cadavers
Catheterization - methods
Catheters
Clinical outcomes
Clinical trials
Epidural
Epidural anesthesia
Epidural catheter
Epidural Space - diagnostic imaging
Female
Humans
Hypotheses
Male
Middle Aged
Observational studies
Palpation
Recovery (Medical)
Skin
Spinal Nerve Roots - anatomy & histology
Spinal Nerve Roots - diagnostic imaging
Success
Surgery
Thoracic Vertebrae - diagnostic imaging
Time Factors
Trainee
Transverse process
Ultrasonic imaging
Ultrasonography, Interventional
Ultrasound
Visualization
title Ultrasound-assisted middle thoracic epidural catheter placement utilizing the most dorsal sites of bilateral transverse process roots as anatomical landmarks: A cadaveric observational study and a clinical randomized controlled trial
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