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Objective <p>This study aimed to evaluate aerobic capacity in children and adolescents following a diagnosis of Multisystem Inflammatory Syndrome in Children (MIS-C) compared to healthy matched controls. </p> Design <p>Prospective cohort study.</p> Setting <p>Quaternary Pediatric intensive care unit and Pediatric cardiology unit.</p> Participants <p>14 children diagnosed with MIS-C.</p> Interventions <p>None.</p> Measurements <p>Cardiopulmonary fitness parameters at the time of post-Pediatric intensive care unit follow-up (mean 3.6 months) such as maximum oxygen uptake (VO<sub>2max</sub>) and the first ventilatory anaerobic threshold (VAT), as a marker of muscular deconditioning.</p> Main Results <p>A total of 14 patients (12 boys) with a confirmed diagnosis of MIS-C and 70 healthy children were included. The median age was 13.2 years (range 10.7-13.6 years). All participants had a normal echocardiogram and normal lung function at the time of cardiopulmonary exercise test. As measured by VO<sub>2max</sub> Z-score, exercise capacity was significantly lower in the MIS-C group compared to healthy controls (median-0.91 vs 0.13, p &lt; 0.01), and a significantly higher proportion of children in the MIS-C group had impaired aerobic capacity (VO<sub>2max</sub> Z-score&lt;-1.64) compared to controls (29% vs. 3%, p &lt; 0.01). The VAT was also significantly lower in the MIS-C group with a higher proportion of children with an impaired VAT (VAT Z-score&lt;-1.64) compared to controls (43% vs. 3%, p = 0.03). Impaired aerobic capacity in the MIS-C group was associated with higher BMI, higher PELOD 2 score and lower platelet count at the PICU admission, and lower hemoglobin level at the cardiopulmonary exercise test time.</p> Conclusions <p>This study suggests that children with MIS-C experience significant reductions in aerobic capacity compared to healthy controls, primarily due to muscular deconditioning. These findings highlight the importance of considering post-ICU consultations and implementing strategies to address physical deconditioning in this population.</p>

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Reduced aerobic capacity in children with multisystem inflammatory syndrome in children (MIS-C) after PICU admission: a retrospective cohort study, 2020–2022

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  • 发表日期：

    2025年10月21日

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  • Albane B.R Maggio,
  • Sofia Palomo,
  • Raphael Joye,
  • Héléna Huguet,
  • Angelo Polito,
  • Arthur Gavotto

摘要

Objective

This study aimed to evaluate aerobic capacity in children and adolescents following a diagnosis of Multisystem Inflammatory Syndrome in Children (MIS-C) compared to healthy matched controls.

Design

Prospective cohort study.

Setting

Quaternary Pediatric intensive care unit and Pediatric cardiology unit.

Participants

14 children diagnosed with MIS-C.

Interventions

None.

Measurements

Cardiopulmonary fitness parameters at the time of post-Pediatric intensive care unit follow-up (mean 3.6 months) such as maximum oxygen uptake (VO2max) and the first ventilatory anaerobic threshold (VAT), as a marker of muscular deconditioning.

Main Results

A total of 14 patients (12 boys) with a confirmed diagnosis of MIS-C and 70 healthy children were included. The median age was 13.2 years (range 10.7-13.6 years). All participants had a normal echocardiogram and normal lung function at the time of cardiopulmonary exercise test. As measured by VO2max Z-score, exercise capacity was significantly lower in the MIS-C group compared to healthy controls (median-0.91 vs 0.13, p < 0.01), and a significantly higher proportion of children in the MIS-C group had impaired aerobic capacity (VO2max Z-score<-1.64) compared to controls (29% vs. 3%, p < 0.01). The VAT was also significantly lower in the MIS-C group with a higher proportion of children with an impaired VAT (VAT Z-score<-1.64) compared to controls (43% vs. 3%, p = 0.03). Impaired aerobic capacity in the MIS-C group was associated with higher BMI, higher PELOD 2 score and lower platelet count at the PICU admission, and lower hemoglobin level at the cardiopulmonary exercise test time.

Conclusions

This study suggests that children with MIS-C experience significant reductions in aerobic capacity compared to healthy controls, primarily due to muscular deconditioning. These findings highlight the importance of considering post-ICU consultations and implementing strategies to address physical deconditioning in this population.