| Continuous glucose monitoring in Korean pediatric
patients with type 1 diabetes: current landscape and
clinical implications |
Hwa Young Kim1,2 
, Jaehyun Kim1,2
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1Department of Pediatrics, Seoul National University Bundang Hospital, Seongnam, Korea
2Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea |
Correspondence:
Jaehyun Kim, Email: joyminer@gmail.com
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Received: 6 July 2025 • Revised: 14 August 2025 • Accepted: 1 September 2025 |
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| Abstract |
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Continuous glucose monitoring (CGM) has become a
key component in the management of pediatric type 1
diabetes mellitus (T1DM) since it offers real-time glucose
data that facilitate tighter glycemic control and reduce
acute complications. Accumulating evidence and international
guidelines highlight the clinical efficacy, safety,
and feasibility of CGM use in children, particularly those
with high adherence. Regular CGM use is associated with
significant reductions in glycated hemoglobin, fewer
hypo- and hyperglycemia episodes, and improved quality
of life for both patients and their caregivers. Recent
advances in CGM technology—including improved
accuracy, extended sensor wear, factory calibration, and
customizable alerts—have enhanced their usability in
pediatric populations. In addition to established CGM
metrics such as time in range, time below range, and
glycemic variability, a novel parameter—time in tight
range (also referred as time in normoglycemia), defined
as the percentage of time with blood glucose readings
within 70–140 mg/dL—has emerged as a potentially more
sensitive marker of optimal glycemic control in children.
This review provides a comprehensive overview of CGM
technologies, including device types, performance metrics,
and clinical evidence supporting their use for
pediatric T1DM. It also examines recent advancements in
Korea such as expanded insurance reimbursement and
clinical integration. As CGM becomes more accessible
and technologically advanced, it is expected to play an
increasingly central role in optimizing long-term outcomes
for children and adolescents with T1DM. |
| Key Words:
Continuous glucose monitoring, Type 1 diabetes
mellitus, Child, Adolescent, Korea |
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