Ariji Y, Hayashi T, Ideta R, Koga R, Murai S, Naka T, Ifuku R, Towatari F, Sakai H, Kurata H, Maeda T. Identification of a reliable sacral-sparing examination to assess the ASIA impairment scale in patients with traumatic spinal cord injury.
J Spinal Cord Med 2024;
47:286-292. [PMID:
35352975 PMCID:
PMC10885764 DOI:
10.1080/10790268.2022.2047548]
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Abstract
OBJECTIVES
We evaluated the time course of the American Spinal Cord Injury Association (ASIA) impairment scale (AIS) for up to three months in participants within 72 h after traumatic spinal cord injury (TSCI) with complete paralysis. We aimed to determine the most useful sacral-sparing examination (deep anal pressure [DAP], voluntary anal contraction [VAC], S4-5 light touch [LT], or pin prick [PP] sensation) in determining AIS grades.
DESIGN
Retrospective cohort study.
SETTING
Spinal Injuries Center, Fukuoka, Japan.
PARTICIPANTS
Among 668 TSCI participants registered in the Japan Single Center study for Spinal Cord Injury Database (JSSCI-DB) between January 2012 and May 2020, we extracted the data of 80 patients with AIS grade A within 72 h after injury and neurological level of injury (NLI) at T12 or higher.
INTERVENTIONS
None.
OUTCOME MEASURES
The sacral-sparing examination at the time of the change to incomplete paralysis was compared to the AIS determination using a standard algorithm and with each assessment including the VAC, DAP, S4-5LT, and S4-5PP examinations at the time of AIS functional change. Agreement among assessments was evaluated using weighted kappa coefficients. The relationship was evaluated using Spearman's rank correlation coefficients.
RESULTS
Fifteen participants (18.8%) improved to incomplete paralysis (AIS B to D) within three months after injury. The single assessment among the sacral-sparing examinations with the highest agreement and strongest correlation with AIS determination was the S4-5LT examination (k = 0.89, P < 0.01, r = 0.84, P < 0.01).
CONCLUSIONS
The S4-5LT examination is key in determining complete or incomplete paralysis due to its high discriminatory power.
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