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Congenital Heart Disease in ChildrenNCT05022836

Four-limb Blood Pressures in Infants With High Risk of Congenital Malformation of Aorta

An observational study of Congenital Heart Disease in Children and Coarctation of Aorta, run by Guangdong Provincial People's Hospital.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Pulse oximetry screening (POS) for critical congenital heart diseases (CCHD) could identify 90% of these infants. However, this approach is not designed to detect cardiac defects without hypoxemia, especially congenital malformations of aorta (CMoA). More than 60% of CMoA was late diagnosed. Read more about this study

Who is it for?
Ages 0 days to 1 year
What is being tested?
four-limb blood pressure measurements
How many people
1,604 participants
Where
No sites listed yet
Study dates
1 Jan 2013to 25 Jun 2021
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 0 days to 1 year
  • All sexes
  • Child

Study population: Infants admitted to the Guangdong Provincial People's Hospital between January 1st, 2013 and December 31st, 2019, who were suspected as having congenital heart disease, were enrolled in the study. Four-limb BPs in infants of confirmed or suspected CCHD admitted at our hospital were prospectively collected at admission following the Pediatric Department protocol for CCHD infants in which all infants with high risk of CCHD, defined as confirmed or suspected CCHD by clinical teams, were screened by measuring four-limb BPs by certificated nurses. Suspected CCHD was defined as unreasonable low SpO2, cyanosis, murmur, suspected CHD by prenatal ultrasound or postnatal echocardiography at other hospitals, and unexplained poor cardiac output.

Who may be able to join

  • Infants admitted to the Guangdong Provincial People's Hospital between January 1st, 2013 and December 31st, 2019, who were suspected as having congenital heart disease, were enrolled in the study.

Who cannot join

  • Infants without four-limb blood pressures measurement or without echocardiogram and cardiac computed tomography results were excluded.

About this study

Official title: Should Four-limb Blood Pressures be Used in Infants With High Risk of Congenital Malformation of Aorta?

Pulse oximetry screening (POS) for critical congenital heart diseases (CCHD) could identify 90% of these infants. However, this approach is not designed to detect cardiac defects without hypoxemia, especially congenital malformations of aorta (CMoA). More than 60% of CMoA was late diagnosed.

Infants with CMoA were supposed to present with blood pressure (BP) gradient between four limbs. But a large sample size retrospective study of four-limb BP screening showed a negative result. The possible reason is that this study ran in population with a very low risk of CMoA. Whether four-limb BPs measurement could be used in infants with high risk of congenital malformation of aorta is still to be determined.

The investigators retrospectively collected four-limb BPs, which was prospectively measured, in infants with high risk of CMoA. These data were divided into two groups, the discovery group and the validation group. The best cutoff of four-limb BP gradient was generated by Youden Index. The BP gradients by age were analyzed. Pre-operative hypotension and post-operative hypertension were also analyzed.

Being tested
four-limb blood pressure measurements
Keywords
Congenital Heart Disease, Coarctation of Aorta, Interrupted Aortic Arch, Hypoplasia of Aorta, Blood Pressure, screening
Medical subject headings
Aortic Coarctation, Heart Defects, Congenital

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • four-limb blood pressure measurementsDiagnostic test

    Also called Echocardiogram or cardiac computed tomography results were used as the gold standard.

    Four-limb blood pressures were measured by certificated nurses at admission.

What is being measured

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

  1. The cutoff of four-limb BPs gradient to diagnose CMoA

    ROC curve and Youden Index were used in the discovery group and the validation group to spot the optimal cutoff of BP gradient.

    Measured: at admission

Secondary outcomes (1)
  1. The accuracy of four-limb BPs measurement to predict CMoA

    The sensitivity, specificity, Youden index, the area under the ROC curve, likelihood ratio for positive test results, likelihood ratio for negative test results, positive predictive value, and negative predictive value were calculated.

    Measured: at admission

Timeline

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

  1. First posted26 Aug 2021
  2. Study start1 Jan 2013
  3. Primary completion31 Dec 2019
  4. Study completion25 Jun 2021

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
1,604 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05022836
Sponsor's protocol ID
Four-limb BPs in CMoA
Status last verified
Aug 2021
First submitted
20 Aug 2021
Last updated
1 Sep 2021
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

An observational study of Congenital Heart Disease in Children and Coarctation of Aorta, run by Guangdong Provincial People's Hospital.

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 1 inclusion and 1 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: finished, as of the sponsor's last update on 1 Sep 2021. Status can change between updates, so confirm with the study contact before making plans.

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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

The cutoff of four-limb BPs gradient to diagnose CMoA (time frame: at admission). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 1 Sep 2021.

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