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Sudden Cardiac DeathPM-SCD CHINANCT03485079

A Prospective,Multiple Center,Cohort Study of Prediction Model on Sudden Cardiac Death and Devices Development by Automatic Analysis From 24h Electrocardiogram in China

An observational study of Sudden Cardiac Death, run by Jingfeng Wang at 1 site in China.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

This study is a prospective, multicenter, cohort study. The study will be completed in three phases. The first phase aims to establish SCD PW marker and PW score scoring system 1. Use big data processing techniques to find out the differences between survivors with ventricular arrhythmias and normal controls. Read more about this study

Who is it for?
Ages 18 to 75 yearsHealthy volunteers can take part
Conditions the study is for
Sudden Cardiac Death
How many people
2,200 participants
Where
1 siteChina
Study dates
10 Apr 2018to 31 Dec 2022
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 75 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: Patients with recorded ventricular tachycardia, ventricular fibrillation or cardiac arrest and patients with traditional high-risk ventricular arrhythmia or health checkers in Sun Yat-sen Memorial Hospital, Sun Yat-sen University. Informed consent must be obtained for all of the included people.

Who may be able to join

  • 1. Patients with recorded ventricular tachycardia, ventricular fibrillation or cardiac arrest meet one of the following conditions:
  • survivors with cardiac arrest(including correct electrotherapy of ICD with ATP and electrical cardioversion)owing to non-reversible causes of ventricular fibrillation or hemodynamically unstable sustained ventricular tachycardia.
  • Patients who suffer the underlying organic heart disease with spontaneous sustained ventricular tachycardia (including correct ICD therapy including ATP and cardioversion)
  • more than 40 days after myocardial infarction , LVEF ≤ 0.35 with grade II or III cardiac function or more than 40 days after myocardial infarction, LVEF ≤ 0.30, with grade I cardiac function;
  • non-ischemic cardiomyopathy, grade II or III heart function, LVEF ≤ 0.35;
  • hereditary arrhythmia diseases: a group inherited diseases including long QT syndrome, short QT syndrome and Brugada syndrome, etc with arrhythmia, syncope and sudden death as the main clinical manifestations and cardiac gene mutation which encodes ion channels and their regulatory protein as the reason.
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  • long QT syndrome: electrocardiogram on the surface indicates QTc longer than 440 ms, accompanied by rapid ventricular arrhythmia, clinical symptoms of syncope and sudden death, without organic heart disease, except for acquired QT extension caused by electrolyte disorder and medication.
  • short QT syndrome: electrocardiogram on the surface indicates QTc less than 300 ms, accompanied by rapid ventricular arrhythmia, clinical manifestations of syncope and sudden death, without organic heart disease, except for acquired etiology such as electrolyte disturbance and sympathetic stimulation.
  • brugada syndrome: electrocardiogram on the surface suggests that the ST segment of leads V1-V3 is descending or saddle-shaped, accompanied by right bundle branch block, rapid ventricular arrhythmia, syncope, and sudden death without organic heart disease and ST-T changes due to other factors.
  • catecholamine sensitive ventricular tachycardia: healthy individuals with no cardiac structural abnormalities and normal QTc suffer typical bidirectional, polymorphic ventricular tachycardia during exercise treadmill test or intravenous isoproterenol injection.
  • hypertrophic cardiomyopathy: asymmetric ventricular septum hypertrophy> 15mm, or symmetrical hypertrophy ventricular septum thickness / left ventricular posterior wall thickness < 1.3 and left ventricular diastolic compliance decreased with or without left intraventricular or outflow obstruction confirmed by examination (including echocardiography, left ventricular angiography, cardiac MRI or cardiac CT, etc.).Heart changes caused by hypertension, aortic stenosis and other diseases need to be excluded.
  • Note: The above arrhythmia must be clearly recorded, including course records, nursing records, electrocardiogram, Holter, bedside ECG monitoring, telemetry ECG monitoring, portable ECG recorder, implanted device with program control data, including ECG Event recorders, pacemakers,ICDs, etc.
  • 2.health checkers:physical examination patients without history of structural heart disease such as coronary heart disease or cardiomyopathy
  • 3.patients or health checkers can learn to use microelectrocardiograph device after simple technical training;
  • 4.patients or legal representatives or health checkers are willing and able to sign informed consent

Who cannot join

  • 1.people who are pregnant or ready to become pregnant
  • 2.people who are unable or unwilling to follow the study protocol and complete follow-up
  • 3.people with uncontrolled hyperthyroidism and hypothyroidism, severe infection, severe hepatic and renal insufficiency (ALT≧3 times, or/and eGFR≦30mL/min calculated by any formula), malignancy, etc.
  • 4.people with all kinds of idiopathic ventricular tachycardia diagnosed by electrocardiogram or electrophysiological examination, including idiopathic ventricular tachycardia in special parts such as left posterior branch, left anterior branch, right ventricular outflow tract, left ventricular outflow tract, etc.
  • 5.people with various structural heart diseases, including various congenital heart diseases, rheumatic or senile heart valve disease
  • 6.people with acute or subacute infective endocarditis, acute viral myocarditis
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  • 7.people with pulmonary arterial hypertension caused by right ventricular dysfunction alone, by UCG or right heart catheter examination PASP ≧ 40mmHg
  • 8.people with severe electrolyte imbalance, acid-base imbalance
  • 9.people with cardiac arrest caused by various severe bradyarrhythmias
  • 10.people with known allergic reactions to adhesives or hydrogels
  • 11.people whose skin cannot be pasted by electrode beacuse of a recent surgery.
  • 12.people who are participating in other clinical trials and may affect the data collection of this study
  • 13.people who have other situations that are not suitable for joining the group
  • Exit criteria:
  • 1.people participating in the study can withdraw from the study at any time
  • 2.people ask researchers for their desire to terminate the study
  • 3.if the study jeopardizes the patient's health, the researcher can decide at any time to let the patient withdraw from the study.

Trial locations and contacts

1 site in 1 country.

China1 site

  • Sun Yat-sen Memorial Hospital of Sun Yat-sen University

    Guangzhou, Guangdong

Other trials in China

About this study

Official title: A Prospective, Multiple Center, Cohort Study of Prediction Model on Sudden Cardiac Death and Devices Development by Automatic Analysis From 24h Electrocardiogram in China

This study is a prospective, multicenter, cohort study. The study will be completed in three phases.

The first phase aims to establish SCD PW marker and PW score scoring system

Read more
  1. Use big data processing techniques to find out the differences between survivors with ventricular arrhythmias and normal controls. Find out the SCD Pre-warning ECG Marker (PW marker).
  2. Establish SCD Pre-warning risk score system according to traditional SCD risk factors, clinical characteristics of patients and abnormal electrocardiogram indicators.
  3. According to the established SCD PW marker and PW score scoring system, the original group of patients are classified and scored. After five years of follow-up with sustained ventricular tachycardia or ventricular fibrillation as the primary end point and sudden cardiac death as the secondary endpoint, Kaplan-Meier are used to calculate the mortality rate of sudden cardiac death and Kaplan-Meier survival analysis. The COX proportional hazards regression model is used to further determine and evaluate the SCD predictive value of PW marker and PW score risk factor scoring system.

The second phase is to validate the established PW marker and PW score system models and evaluate the SCD predictive value of it. This stage is divided into two parts:

  1. Patients enrolled in traditional high-risk ventricular arrhythmia, will be divided into PW marker positive group and PW marker negative group and join in a 5-year follow-up. Kaplan-Meier is used to calculate the mortality rate of sudden cardiac death and Kaplan-Meier survival analysis is performed to further verify the early warning effect of PW marker on SCD.
  2. Patients will be divide into three groups including the low-risk group, middle-risk group and high-risk group according to the PW score risk factor scoring system and join in a 5-year follow-up. Kaplan-Meier is used to calculate the mortality rate of sudden cardiac death, and Kaplan-Meier survival analysis is used to further verify the early warning effect of PW score scoring system on SCD.

The third stage is the development stage of SCD early warning equipment. This stage will conduct clinical translational medical studies of PW marker and PW score based on the previous study and develop PW marker and PW score as portable SCD warning device and/or mobile phone APP which will be applied to the clinic for early warning diagnosis of SCD.

Read the detailed description

This study is a prospective, multicenter, cohort study. The study will be completed in three phases.

The first phase is a prospective, multi-center, cohort study of the SCD early warning model. This phase is divided into three parts:

  1. Use big data processing techniques to find out the differences between survivors with ventricular arrhythmias and normal controls. Find out the SCD Pre-warning ECG Marker (PW marker), and determine the reasonable threshold of its early warning.
  2. Establish SCD Pre-warning risk score system according to traditional SCD risk factors, clinical characteristics of patients and abnormal electrocardiogram indicators.
  3. According to the established SCD PW marker and PW score scoring system, the original group of patients are classified and scored. After five years of follow-up with sustained ventricular tachycardia or ventricular fibrillation as the primary end point and sudden cardiac death as the secondary endpoint, Kaplan-Meier are used to calculate the mortality rate of sudden cardiac death and Kaplan-Meier survival analysis. The COX proportional hazards regression model is used to further determine and evaluate the SCD predictive value of PW marker and PW score risk factor scoring system.

The second phase is a prospective, multicenter, high-risk cohort study of SCD. It is used to validate the established PW marker and PW score system models and evaluate the SCD predictive value of it.

This stage is divided into two parts:

  1. Patients enrolled in traditional high-risk ventricular arrhythmia, will be divided into PW marker positive group and PW marker negative group and join in a 5-year follow-up with sustained ventricular tachycardia or ventricular fibrillation as the primary end point and sudden cardiac death as the secondary endpoint. Kaplan-Meier is used to calculate the mortality rate of sudden cardiac death and Kaplan-Meier survival analysis is performed to further verify the early warning effect of PW marker on SCD.
  2. Patients will be divide into three groups including the low-risk group, middle-risk group and high-risk group according to the PW score risk factor scoring system and join in a 5-year follow-up with sustained ventricular tachycardia or ventricular fibrillation as the primary end point and sudden cardiac death as the secondary endpoint. Kaplan-Meier is used to calculate the mortality rate of sudden cardiac death, and Kaplan-Meier survival analysis is used to further verify the early warning effect of PW score scoring system on SCD.

The third stage is the development stage of SCD early warning equipment. This stage will conduct clinical translational medical studies of PW marker and PW score based on the previous study and develop PW marker and PW score as portable SCD warning device and/or mobile phone APP which will be applied to the clinic for early warning diagnosis of SCD.

Medical subject headings
Death, Sudden, Cardiac

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. SCD Pre-warning ECG Marker (PW marker)

    Use big data processing techniques to find out the differences between survivors with ventricular arrhythmias and normal controls

    Measured: baseline

  2. rate of sustained ventricular tachycardia or ventricular fibrillation

    Five years of follow-up with sustained ventricular tachycardia or ventricular fibrillation as the primary end point

    Measured: baseline and 5 years later

  3. rate of sudden cardiac death

    Five years of follow-up with sudden cardiac death as the secondary endpoint

    Measured: baseline and 5 years later

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Apr 2018
  2. Study start10 Apr 2018 (estimated)
  3. Primary completion31 Dec 2022 (estimated)
  4. Study completion31 Dec 2022 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
2,200 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03485079
Sponsor's protocol ID
[2018]SYSEC-KY-KS-025
Acronym
PM-SCD CHINA
Status last verified
Mar 2018
First submitted
20 Mar 2018
Last updated
2 Apr 2018
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

An observational study of Sudden Cardiac Death, run by Jingfeng Wang at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 15 inclusion and 17 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 2 Apr 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

SCD Pre-warning ECG Marker (PW marker) (time frame: baseline). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03485079.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Apr 2018.

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