What is the clinical evidence from this study?

Study design: Cross-Sectional. Population: pediatric acute gastroenteritis (n=530). Intervention: SE-PO Serum Potassium Predictor vs. Venous serum potassium. Primary outcome: Diagnostic accuracy for hypokalemia (<3.5 mEq/L) (AUC 0.988).

What question did this study set out to answer?

To evaluate the diagnostic accuracy of the SE-PO Serum Potassium Predictor for hypokalemia in children with acute gastroenteritis.

July 27, 2026Open Access

A Smartphone-Based Predictor of Hypokalemia in Pediatric Acute Gastroenteritis: A Pilot Diagnostic Accuracy Study

Q: What are the key findings of this study?

The SE-PO Serum Potassium Predictor accurately detected hypokalemia in pediatric acute gastroenteritis, demonstrating 92.1% sensitivity, 97.3% specificity, and an AUC of 0.988.

Q: What question did this study set out to answer?

To evaluate the diagnostic accuracy of the SE-PO Serum Potassium Predictor for hypokalemia in children with acute gastroenteritis.

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Key result

SE-PO predictor detects hypokalemia in pediatric acute gastroenteritis with ~92% sensitivity.

AUC 0.988
n=530

Why the study?

In low- and middle-income settings, serum potassium results may not be available when initial treatment decisions are made for pediatric acute gastroenteritis admissions.

Does the SE-PO Serum Potassium Predictor accurately predict hypokalemia in children admitted for acute gastroenteritis?

Comparison

SE-PO Serum Potassium Predictor vs venous serum potassium reference standard

Design

Single-center cross-sectional diagnostic accuracy study

Authors

JCJohn Paul T. Cuevas BMBernadette C. Macrohon NJNorvie T. Jalani

Discussion

Member takes

Overview

Should not yet change practice; leaves open prospective validation before clinical use.

Key Points

To evaluate the diagnostic accuracy of the SE-PO Serum Potassium Predictor for hypokalemia in children with acute gastroenteritis.
Cross-sectional diagnostic accuracy design
Involved 530 children aged 5 months to 17 years
Bedside assessments conducted before intravenous fluids and lab results were obtained.
Application sensitivity was 92.1% and specificity was 97.3%, indicating high accuracy.
Detection rate for moderate and severe hypokalemia was 100%, while mild hypokalemia detection was 76.1%.
Mean underestimation by the application was 0.18 mEq/L according to Bland-Altman analysis.

Study Design

Type

Cross-Sectional (n=530)

Multicenter

Structured PICO

Does the SE-PO Serum Potassium Predictor accurately predict hypokalemia in children admitted for acute gastroenteritis?

Population

530 children aged 5 months to 17 years admitted for acute gastroenteritis at a single tertiary government hospital in the southern Philippines.

Exposure

SE-PO Serum Potassium Predictor (an Android application that converts bedside clinical and electrocardiographic findings into a predicted serum potassium value)

Comparator

Venous serum potassium measurement (reference standard)

Outcome

Diagnostic accuracy for detecting hypokalemia (defined as serum potassium < 3.5 mEq/L)surrogate

Main Result

Effect estimate: AUC 0.988

A smartphone application utilizing bedside clinical and ECG findings demonstrated high preliminary diagnostic accuracy for predicting hypokalemia in pediatric acute gastroenteritis, though external validation is required.

Limitations

Single-center pilot estimates evaluated in the same institution where the model was developed
Prospective external validation is required before clinical adoption
Single-center pilot estimates
Model was evaluated in the same institution in which it was developed
Detection was lower (76.1%) for mild hypokalemia
Specificity decreased to 81.5% among children with hypovolemic shock

Cite This Study

Cuevas et al. (2026) conducted a cross-sectional in pediatric acute gastroenteritis (n=530). SE-PO Serum Potassium Predictor vs. Venous serum potassium was evaluated on Diagnostic accuracy for hypokalemia (<3.5 mEq/L) (AUC 0.988). The SE-PO Serum Potassium Predictor accurately detected hypokalemia in pediatric acute gastroenteritis, demonstrating 92.1% sensitivity, 97.3% specificity, and an AUC of 0.988.

synapsesocial.com/papers/6a67008840bca442e0d4a420 https://doi.org/10.5281/zenodo.21475950

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July 27, 2026Open Access

A Smartphone-Based Predictor of Hypokalemia in Pediatric Acute Gastroenteritis: A Pilot Diagnostic Accuracy Study

View Full Paper

Ask AI

Bookmark

Key result

SE-PO predictor detects hypokalemia in pediatric acute gastroenteritis with ~92% sensitivity.

AUC 0.988
n=530

Why the study?

In low- and middle-income settings, serum potassium results may not be available when initial treatment decisions are made for pediatric acute gastroenteritis admissions.

Does the SE-PO Serum Potassium Predictor accurately predict hypokalemia in children admitted for acute gastroenteritis?

Comparison

SE-PO Serum Potassium Predictor vs venous serum potassium reference standard

Design

Single-center cross-sectional diagnostic accuracy study

Authors

JCJohn Paul T. Cuevas BMBernadette C. Macrohon NJNorvie T. Jalani

Discussion

Member takes

Overview

Should not yet change practice; leaves open prospective validation before clinical use.

Key Points

To evaluate the diagnostic accuracy of the SE-PO Serum Potassium Predictor for hypokalemia in children with acute gastroenteritis.
Cross-sectional diagnostic accuracy design
Involved 530 children aged 5 months to 17 years
Bedside assessments conducted before intravenous fluids and lab results were obtained.
Application sensitivity was 92.1% and specificity was 97.3%, indicating high accuracy.
Detection rate for moderate and severe hypokalemia was 100%, while mild hypokalemia detection was 76.1%.
Mean underestimation by the application was 0.18 mEq/L according to Bland-Altman analysis.

Study Design

Type

Cross-Sectional (n=530)

Multicenter

Structured PICO

Does the SE-PO Serum Potassium Predictor accurately predict hypokalemia in children admitted for acute gastroenteritis?

Population

530 children aged 5 months to 17 years admitted for acute gastroenteritis at a single tertiary government hospital in the southern Philippines.

Exposure

SE-PO Serum Potassium Predictor (an Android application that converts bedside clinical and electrocardiographic findings into a predicted serum potassium value)

Comparator

Venous serum potassium measurement (reference standard)

Outcome

Diagnostic accuracy for detecting hypokalemia (defined as serum potassium < 3.5 mEq/L)surrogate

Main Result

Effect estimate: AUC 0.988

Limitations

Single-center pilot estimates evaluated in the same institution where the model was developed
Prospective external validation is required before clinical adoption
Single-center pilot estimates
Model was evaluated in the same institution in which it was developed
Detection was lower (76.1%) for mild hypokalemia
Specificity decreased to 81.5% among children with hypovolemic shock

Cite This Study

synapsesocial.com/papers/6a67008840bca442e0d4a420 https://doi.org/10.5281/zenodo.21475950

Also Consider

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