The aim of this study is to evaluate the reliability of smartphone seismocardiography (SCG) and bed-based ballistocardiography (BCG) for detecting supraventricular tachycardia (SVT) in children aged 0-10 years. The performance of these methods will be compared to the gold standard of continuous telemetry ECG recording.

This study aims to validate the use of a cardiac monitoring system, comprising a smartphone for seismocardiography (SCG) and a smart mattress for ballistocardiography (BCG), to detect supraventricular tachycardia (SVT) in children aged 0-10 years. Additionally, the study will compare heart rate and breathing rate measurements from these investigational devices against a Philips Intellivue X2 ECG Monitor, which serves as the gold standard. A convenience sample of up to 60 children (30 in the SVT group and 30 in the control group) will be recruited, and their parents will also be interviewed to explore their perceptions of arrhythmia monitoring. The primary objective is to develop and understand algorithms for differentiating SVT from sinus rhythm using SCG and BCG signals.

Inclusion Criteria:

• For children in Study(SVT) group:

  1. received informed consent from both parents/guardians
  2. the child is treated in the Pediatric wards of Tyks Lighthouse hospital
  3. the child is between the age of 0-10 years
  4. the child has diagnosed or suspected SVT.

• For children in control group:

  1. received informed consent from both parents/guardians
  2. the child is treated in the Pediatric wards of Tyks Lighthouse hospital
  3. the child is between the age of 0-10 years
  4. child has not diagnosed with SVT

Exclusion Criteria:

• All participant groups:

  1. not reaching the inclusion criteria

N=up to 60, 30 for the study (SVT) group and 30 for the control group.