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CompletedNCT04190615Updated Jan 6, 2021

Determination of ClotPro Paediatric Reference Range Study

An observational study in Clotting and Bleeding Disorders, Child Development and Infant Development, sponsored by National Institute of Children's Diseases, Slovakia. Completed at 1 site in Slovakia. Open to participants aged 1 Hour to 16 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-01-06.

Sponsored by National Institute of Children's Diseases, Slovakia · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
322
Ages
1 Hour to 16 Years
Sex
All
01

Study summary

A new thromboelastometry analyser (ClotPro, Enicor GmbH, Munich, Germany) with improved technology was developed. This device has an improved new-generation viscoelastometric testing technique and enables the detection and assessment of factor deficiencies, low fibrinogen, platelet contribution (to whole blood coagulation), heparin and direct oral anticoagulants effects, fibrinolysis and antifibrinolytic drugs. This study aims to determine reference ranges for the ClotPro device for all paediatric age groups.

Read the detailed description

Viscoelastic testing as a relatively novel method to assess coagulation status appears favourable in reducing blood product transfusions. The tests are performed on whole blood instead of plasma, which saves time and gives a quick sight at the interaction between cellular and plasmatic clotting factors.

Reviews of the literature suggest that transfusions of packed red blood cells (pRBC), plasma, and platelets are all decreased in patients whose transfusions were guided by viscoelastic tests rather than by clinical judgement or conventional laboratory tests.

The benefits of viscoelastic coagulation monitoring have been described in many fields of surgery and intensive care. Current literature and a guideline for the treatment of massive haemorrhage in perioperative bleeding and trauma patients recommend the use of viscoelastic tests to guide haemostatic resuscitation.

02

Conditions studied

  • Clotting and Bleeding Disorders
  • Child Development
  • Infant Development
  • Coagulopathy

Keywords

  • thromboelastometry
  • viscoelastic testing
  • reference ranges
03

In context

Hemostatic Disorders

503 studies on the registry are indexed under Hemostatic Disorders; 71 are open to participants now.

This study's enrollment of 322 is above the median of 100 across 229 observational studies indexed under Hemostatic Disorders.

Browse Hemostatic Disorders studies →

Lead sponsor

This is the only study on the registry with National Institute of Children's Diseases, Slovakia as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
1 Hour to 16 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

6 Individual age categories are determined to monitor: ASA physical status I-II

  1. 0 (full term) to 3 months
  2. 4 to12 months
  3. 13 to 24 months
  4. 2 to 5 years
  5. 6 to10 years
  6. 11 to 16 years Demographic data to be recorded: age, gender, weight, height.

Inclusion criteria

  • paediatric patients attending hospital for elective surgery or diagnostic imaging undergoing general anaesthesia are going to be eligible to participate.
  • children whose parents agree to participate are provided with oral and written information and written informed consent has to be obtained.

Exclusion criteria

Exclusion Criteria:

  • problematic blood collection
  • age over 16 years
  • emergency surgery
  • systemic infection
  • known bleeding disorders
  • history of congenital or acquired coagulopathy including renal, liver and bone marrow disease,
  • any medication interfering with haemostasis
  • prophylactic or therapeutic anticoagulant therapy (acetylsalicylic acid within the last 10 days or low-molecular-weight heparins within the last 48 h)
  • administration of colloids hydroxyethyl starch (HES)/albumin, or blood products before the blood withdrawal
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
322 participants (actual)
Patient registry
No
Biospecimen retention
Samples with dna

Groups and cohorts

  • 0 to 3 months

    0 (term newborns) to 3 month of age

    Diagnostic Test: thromboelastometry test (TEM test)

  • 4 to12 months

    infants from 4month to 12month of age

    Diagnostic Test: thromboelastometry test (TEM test)

  • 13 to 24 months

    children from 13month to 2years of age

    Diagnostic Test: thromboelastometry test (TEM test)

  • 2 to 5 years

    children from 2 to 5 years of age

    Diagnostic Test: thromboelastometry test (TEM test)

  • 6 to 10 years

    children from 2 to 10 years of age

    Diagnostic Test: thromboelastometry test (TEM test)

  • 11 to16 years

    children from 11 to 16 years of age

    Diagnostic Test: thromboelastometry test (TEM test)

Interventions

  • Diagnostic testthromboelastometry test (TEM test)

    TEM test from the whole blood sample

06

What researchers measure

Primary outcomes

  1. reference range for the thromboelastometry analyser (ClotPro, Enicor GmbH, Munich, Germany) in age group 0 to 3 months for EX-test, FIB-test, IN-test, HI-test, RVV test and TPA test

    Measurement of thromboelastometry parameters in paediatric patients of 0-3months age group undergoing elective surgery or diagnostic procedure requiring general anaesthesia.

    Time frame: 30 minutes post blood sampling

  2. reference range for the thromboelastometry analyser (ClotPro, Enicor GmbH, Munich, Germany) in age group 4 to 12 months for EX-test, FIB-test, IN-test, HI-test, RVV test and TPA test .

    Measurement of thromboelastometry parameters in paediatric patients of 4-12months age group undergoing elective surgery or diagnostic procedure requiring general anaesthesia.

    Time frame: 30 minutes post blood sampling

  3. reference range for the thromboelastometry analyser (ClotPro, Enicor GmbH, Munich, Germany) in age group 13 to 24 months for EX-test, FIB-test, IN-test, HI-test, RVV test and TPA test .

    Measurement of thromboelastometry parameters in paediatric patients of 13-24months age group undergoing elective surgery or diagnostic procedure requiring general anaesthesia.

    Time frame: 30 minutes post blood sampling

  4. reference range for the thromboelastometry analyser (ClotPro, Enicor GmbH, Munich, Germany) in age group 2 to 5 years for EX-test, FIB-test, IN-test, HI-test, RVV test and TPA test

    Measurement of thromboelastometry parameters in paediatric patients of 2-5years age group undergoing elective surgery or diagnostic procedure requiring general anaesthesia.

    Time frame: 30 minutes post blood sampling

  5. reference range for the thromboelastometry analyser (ClotPro, Enicor GmbH, Munich, Germany) in age group 6 to10 years for EX-test, FIB-test, IN-test, HI-test, RVV test and TPA test

    Measurement of thromboelastometry parameters in paediatric patients of 6 to10 years group undergoing elective surgery or diagnostic procedure requiring general anaesthesia.

    Time frame: 30 minutes post blood sampling

  6. reference range for the thromboelastometry analyser (ClotPro, Enicor GmbH, Munich, Germany) in age group 11-16 years for EX-test, FIB-test, IN-test, HI-test, RVV test and TPA test

    Measurement of thromboelastometry parameters in paediatric patients of 11-16 years group undergoing elective surgery or diagnostic procedure requiring general anaesthesia.

    Time frame: 30 minutes post blood sampling

Secondary outcomes

  1. Age related differences in thromboelastometry parameters

    possible differences in monitored parameters across age groups;

    Time frame: 12 months

  2. Gender-related differences in thromboelastometry parameters

    possible differences in parameters between genders.

    Time frame: 12 months

07

Study locations

1 site
  • National Institute of Children's Diseases, Bratislava
    Bratislava, 833 40, Slovakia
08

References and documents

Publications

  • Laukova K, Petrikova V, Poloniova L, Babulicova L, Wsolova L, Haas T. Determination of reference ranges for the ClotPro(R) thromboelastometry device in paediatric patients. Br J Anaesth. 2023 Feb;130(2):183-190. doi: 10.1016/j.bja.2022.09.023. Epub 2022 Nov 12. PubMed 36376099 ↗

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 6, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04190615
Lead sponsor
National Institute of Children's Diseases, Slovakia
Responsible party
Katarina Laukova, MD (Paediatric Anaesthetist, Attending physician, National Institute of Children's Diseases, Slovakia) — Principal investigator
First posted
Dec 9, 2019
Start date
Dec 17, 2019
Primary completion
Jan 5, 2021
Completion
Jan 5, 2021
Last update
Jan 6, 2021

Study contacts

Katarina Laukova, MD
principal investigator · National Institute of Children's Diseases, Bratislava

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2021. You cannot join it, but the record below documents what was studied.

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