Research on All Cause Mortality Risk Factors of Acquired Long QT Syndrome Based on Machine learning and Automatic ECG Analysis and Establishment of Prediction Model:a Retrospective Study Based on Medical Records

Research on All Cause Mortality Risk Factors of Acquired Long QT Syndrome Based on Machine learning and Automatic ECG Analysis and Establishment of Prediction Model

Status

Recruiting

Phases

Early Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR2200065173

Enrollment

Unknown

Registered

2022-10-30

Start date

2022-10-30

Completion date

Unknown

Last updated

2023-05-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acquired Long QT syndrome

Interventions

Case series:None

Eligibility

Sex/Gender

All

Age

18 Years to 100 Years

Inclusion criteria

Inclusion criteria: The inclusion criteria were: hospitalized adult patients (age = 18 years old) , between September 2013 and December 2014, who showed QTc (Bazetts) = 500 ms in ECG during hospital stay and absence of a CLQTS diagnosis, family history of CLQTS or syncope and cardiac arrest of an unknown cause.

Exclusion criteria

Exclusion criteria: Complete left / right bundle branch blocks, intraventricular conduction delay, second-degree and complete atrioventricular block, atrial fibrillation / flutter, atrial and ventricular tachyarrhythmia, ventricular pacing and acute coronary syndrome.

Design outcomes

Primary

Measure	Time frame
Acquired long QT syndrome;	—

Secondary

Measure	Time frame
Serum potassium;Serum calcium;Serum magnesium;	—

Countries

China

Contacts

Public ContactYunlong Xia

The First Affiliated Hospital of Dalian Medical University

yunlong_xia@126.com+86 18098875555

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026