TraumaTHATNCT01210417
Trauma Heart to Arm Time
An observational study of Trauma and Hypovolemia, run by Niguarda Hospital at 1 site in Italy.
Trial summary
In the prehospital setting it would be helpful to assess primary changes in central blood volume or preload (venous return, stroke volume, diastolic ventricular volume) that occur during the stability phase following injury when regulatory mechanisms are still functioning. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Trauma, Hypovolemia, Hemorrhage
- What is being tested?
- Non invasive monitoring
- How many people
- 100 participants
- Where
- 1 siteItaly
- Study dates
- Sep 2010to May 2011
- 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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: All trauma victims enrolled by our Helicopter Emergency Medical System (HEMS)
Who may be able to join
- all trauma victims enrolled by our Helicopter Emergency Medical System (HEMS)
Who cannot join
- need of immediate life-saving manoeuvres as decided by onboard physician following Prehospital Trauma Care (PTC) criteria (CITATION PTC)
- Cardiac arrest
- presence of preexisting chronic illnesses involving the autonomic nervous system such as hypertension, diabetes and any neurological disease
- any preexisting medical therapy including those administered by the emergency medical team as defined in point 1)
- presence of supraventricular ectopic beats more than 5% of total recorded beats
- absence of sinus rhythm
Show all 10Show fewer
- presence of intraventricular or bundle branch blocks or artificial pacemaker
- spinal chord trauma above D2
- patient age <18 years
- presence of burns not allowing monitoring
Trial locations and contacts
1 site in 1 country.
About this study
In the prehospital setting it would be helpful to assess primary changes in central blood volume or preload (venous return, stroke volume, diastolic ventricular volume) that occur during the stability phase following injury when regulatory mechanisms are still functioning.
Obviously in this setting a non invasive bedside beat-to-beat index would be helpful.
Pulse Transit Time (PTT) is the sum of Pre-Ejection Period (PEP), the time interval between the onset of ventricular depolarization and the ventricular ejection, and Vascular Transit Time (VTT), the time it takes for the pulse wave to travel from the aortic valve to the peripheral arteries (Obrist et al. 1979). PEP variations are known to correlate with reductions in central blood volume induced by head-up tilt (Chan et al., 2007b, 2008). The same authors also demonstrated that PTT variations follow closely PEP variations and therefore central blood volume variations (Chan et al., 2007b). Following central blood volume reductions induced by head-up tilting ventricular diastolic filling time increases involving an increase in PEP and PTT. Chan et al. (Chan et al., 2007b) concluded that PTT could have been used to assess early central hypovolemia and suggested that joint analysis of PTT and RR intervals could help in predicting the extent of blood volume loss. The investigators hypothesized that sympathetic drive associated with trauma would act on cardiac contractility through beta activity thus shortening PTT without reducing RR interval to the same extent in healthy hearts. We also hypothesized that progressive hypovolemia would lead to a rising of PTT (augmented diastolic filling time) and a RR interval shortening (relative tachycardia). In this study the investigators propose and index based on the beat-to-beat PTT/RR ratio to assess central hypovolemia in traumatic patients enrolled by our Helicopter Emergency Medical System (HEMS) in a prehospital setting.
- Conditions
- Trauma, Hypovolemia, Hemorrhage
- Being tested
- Non invasive monitoring
- Keywords
- Trauma, Hypovolemia, Hemorrhage, Out of hospital trauma
- Medical subject headings
- Wounds and Injuries, Hypovolemia, Hemorrhage
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Non invasive monitoringOther
Three-lead electrocardiogram (ECG), PPG oxymetry, non-invasive blood pressure (NIBP) are registered
| Study group | Role | What they receive |
|---|---|---|
| Trauma victims | All prehospital traumatic patients enrolled by our Helicopter Emergency Medical System (HEMS) Receives: Other: Non invasive monitoring |
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Sep 2010 (estimated)
- Study startSep 2010
- Study completionMay 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for TraumaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Case only
- Time perspective
- Prospective
- Enrolment
- 100 participants (actual)
Sponsor and investigators
- Lead sponsor
- Niguarda Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01210417
- Sponsor's protocol ID
- 179_06/2010
- Acronym
- THAT
- Status last verified
- Feb 2012
- First submitted
- 27 Sep 2010
- Last updated
- 22 Feb 2012
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 22 Feb 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Trauma Heart to Arm Time
- ClinicalTrials.gov ID
- NCT01210417
- Acronym / sponsor ID
- THAT / 179_06/2010
- Conditions
- Trauma, Hypovolemia, Hemorrhage
- Keywords
- Trauma, Hypovolemia, Hemorrhage, Out of hospital trauma
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 100 participants (actual)
- Lead sponsor
- Niguarda HospitalUniversity, hospital or other
- Study start
- Sep 2010
- Study completion
- May 2011 (actual)
- First posted
- 28 Sep 2010 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
In the prehospital setting it would be helpful to assess primary changes in central blood volume or preload (venous return, stroke volume, diastolic ventricular volume) that occur during the stability phase following injury when regulatory mechanisms are still functioning.
Obviously in this setting a non invasive bedside beat-to-beat index would be helpful.
Pulse Transit Time (PTT) is the sum of Pre-Ejection Period (PEP), the time interval between the onset of ventricular depolarization and the ventricular ejection, and Vascular Transit Time (VTT), the time it takes for the pulse wave to travel from the aortic valve to the peripheral arteries (Obrist et al. 1979). PEP variations are known to correlate with reductions in central blood volume induced by head-up tilt (Chan et al., 2007b, 2008). The same authors also demonstrated that PTT variations follow closely PEP variations and therefore central blood volume variations (Chan et al., 2007b). Following central blood volume reductions induced by head-up tilting ventricular diastolic filling time increases involving an increase in PEP and PTT. Chan et al. (Chan et al., 2007b) concluded that PTT could have been used to assess early central hypovolemia and suggested that joint analysis of PTT and RR intervals could help in predicting the extent of blood volume loss. The investigators hypothesized that sympathetic drive associated with trauma would act on cardiac contractility through beta activity thus shortening PTT without reducing RR interval to the same extent in healthy hearts. We also hypothesized that progressive hypovolemia would lead to a rising of PTT (augmented diastolic filling time) and a RR interval shortening (relative tachycardia). In this study the investigators propose and index based on the beat-to-beat PTT/RR ratio to assess central hypovolemia in traumatic patients enrolled by our Helicopter Emergency Medical System (HEMS) in a prehospital setting.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Trauma victims | – | Other: Non invasive monitoringAll prehospital traumatic patients enrolled by our Helicopter Emergency Medical System (HEMS) |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- All trauma victims enrolled by our Helicopter Emergency Medical System (HEMS)
Key inclusion criteria (1 listed)
- all trauma victims enrolled by our Helicopter Emergency Medical System (HEMS)
Key exclusion criteria (10 listed)
- need of immediate life-saving manoeuvres as decided by onboard physician following Prehospital Trauma Care (PTC) criteria (CITATION PTC)
- Cardiac arrest
- presence of preexisting chronic illnesses involving the autonomic nervous system such as hypertension, diabetes and any neurological disease
- any preexisting medical therapy including those administered by the emergency medical team as defined in point 1)
- presence of supraventricular ectopic beats more than 5% of total recorded beats
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Non invasive monitoringThree-lead electrocardiogram (ECG), PPG oxymetry, non-invasive blood pressure (NIBP) are registered | Other | Trauma victims |
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Feb 2012.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Trauma and Hypovolemia, run by Niguarda Hospital at 1 site in Italy.
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 10 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 22 Feb 2012. 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 Italy. 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?
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.
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 22 Feb 2012.