Related Experiment Video
Updated: Nov 12, 2025
Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells
Published on: December 27, 2017
Can we Predict the Clinical Course of Immune Thrombocytopenia in Children by The Mean Platelet Volume? A Preliminary
Insights
Mean platelet volume (MPV) can predict immune thrombocytopenia (ITP) chronicity in children. An initial MPV above 8.7 fL suggests chronic ITP, while MPV changes also offer prognostic value.
Area of Science:
- Pediatric Hematology
- Immunology
- Clinical Diagnostics
Background:
- Mean platelet volume (MPV) is a marker of platelet activation.
- MPV levels are elevated in immune thrombocytopenia (ITP).
- Predicting the clinical course of ITP in children is crucial for management.
Purpose of the Study:
- To evaluate the predictive value of MPV for the clinical course of pediatric ITP.
- To determine if MPV can differentiate between acute and chronic ITP in children.
Main Methods:
- Retrospective analysis of 36 children with ITP and 36 healthy controls.
- Stratification into healthy controls, newly diagnosed/persistent ITP, and chronic ITP groups.
- Measurement and comparison of hematological indices, including MPV.
Main Results:
- Median MPV was significantly higher in children with ITP (8.15-8.65 fL) compared to healthy controls (7.20 fL).
- An MPV cutoff of 8.7 fL differentiated chronic ITP from other groups.
- MPV change over three months was significantly different between acute and chronic ITP cases.
Conclusions:
- Initial MPV > 8.7 fL may predict chronicity in pediatric ITP.
- MPV at diagnosis and its change over time are potential prognostic markers for ITP course in children.
Background:
Mean platelet volume (MPV) is considered a marker of platelet function and is known to increase in immune thrombocytopenia (ITP). We aimed to investigate the predictive value of MPV for predicting the clinical course of ITP in children.
Methods:
We retrospectively analyzed children aged < 18 years with ITP (n = 36) and healthy controls (n = 36) from June 2010 to November 2018. The subjects were stratified into: (i) Healthy controls [group I, n = 36]; (ii) Newly diagnosed ITP (nITP) and persistent ITP (pITP) [group II, n = 24]; and (iii) Chronic ITP (cITP) [group III, n = 12]. Hematological indices including MPV were measured and compared between the three groups.
Results:
The median MPV values at diagnosis in group I, II, and III were 7.20, 8.15, and 8.65 fL, respectively (p = 0.0004). Cutoff value of MPV at diagnosis differentiating group I from group II + III was 7.6 fL, and group II from group III was 8.7 fL. MPV change (ΔMPV after three months minus MPV at diagnosis) in children with nITP and pITP (n = 22) was greater than in those with cITP (n = 6) (-2.18 fL vs. 0.66 fL, p = 0.0059).
Conclusions:
This study revealed that group III had a higher MPV than group II at diagnosis. Therefore, an initial MPV value more than 8.7 fL may be used as a predictive factor for chronicity in children with ITP. The change in MPV over time as well as MPV at diagnosis, may be regarded as a prognostic marker to predict the course of ITP in children.
Related Concept Videos
01:17Pharmacokinetics in Pediatric Patients: Drug Distribution
01:18Structure and Function of Platelets
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...