Pilot Clinical Study of the LRS ThermoSuit™ System in Post Arrest Patients

Heart Arrest Clinical Trial

Official title:

Pilot Clinical Study of the LRS ThermoSuit™ System in Post Arrest Patients

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00410969
• Other study ID #: LRS-01-05-02
• Status: Completed
• Phase: Phase 1
• First received: December 12, 2006
• Last updated: September 25, 2008
• Start date: December 2006
• Est. completion date: September 2008

Study information

• Verified date: September 2008
• Source: Life Recovery Systems
• Contact: n/a
• Is FDA regulated: No
• Health authority: Canada: Health Canada
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to determine if the Life Recovery Systems Thermosuit(R) System is able to quickly and conveniently cool patients who are comatose after resuscitation from cardiac arrest.

Description:

The primary purpose of this study is to clinically evaluate the use of a new cooling device (the LRS ThermoSuit(R) System) to cool patients who are comatose following resuscitation from cardiac arrest. This device cools by circulating cold water directly against the skin of the patient. Cooling to a state of mild hypothermia (32 to 34 degrees C, maintained for 12 to 24 hours) is recognized by the American Heart Association, European Resuscitation Council, and the Canadian Association of Emergency Care Physicians as a promising therapy for such patients, and is likely to be most effective if administered quickly following resuscitation. It is hypothesized that this new device will cool patients much more quickly than by historical means. Patients will be monitored for physiologic parameters such as body temperature during the cooling therapy, and will be tracked for neurological outcomes following treatment.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 27
• Est. completion date: September 2008
• Est. primary completion date: February 2008
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Cardiac arrest prior to or during hospital admission, with restoration/return of spontaneous circulation (ROSC).

• Cardiac arrest of presumed cardiac origin.

• Initial (pre-resuscitation) cardiac rhythm of ventricular fibrillation, non-perfusing ventricular tachycardia, pulseless electrical activity, or asystole.

• Estimated or known age > 18 years.

• Intubation, ventilation and placement of esophageal probe.

• Estimated time from collapse to the initiation of Advanced Cardiac Life Support (ACLS) < 15 minutes and return of spontaneous circulation with defibrillation within 60 minutes of collapse.

• Persistent neurologic dysfunction i.e. comatose upon enrollment [GCS = 8].

Exclusion Criteria:

• Height greater than 188 cm.

• Elbow-to-elbow width greater than 60 cm (as measured above the supine patient).

• Core temperature less than 34°C after ROSC (as measured at the tympanic membrane, esophagus, sub-lingual space, nasopharynx, or central blood vessel).

• Comatose state before the cardiac arrest due to the administration of drugs that depress the central nervous system.

• Known pregnancy.

• Response to verbal commands after ROSC (but before enrollment).

• Known terminal illness that preceded the arrest.

• Known enrollment in another study of a device, drug, or biologic.

• Major trauma or other co-morbidity requiring urgent surgery.

• Improving neurologic status.

• > 8 hours since return of spontaneous circulation.

• Unknown time of arrest.

• Severe or known coagulopathy (with active bleeding).

• Hemodynamic instability despite vasopressors (SBP < 90 mmHg or MAP < 60 mmHg for > 30 minutes after ROSC and before enrollment).

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Coma
• Heart Arrest

Intervention

Device:
• ThermoSuit(R) System
The LRS ThermoSuit System is used to cool patients using direct contact of the skin with cold water.

Locations

Country	Name	City	State
Canada	Kingston General Hospital	Kingston	Ontario
Canada	St. Michael's Hospital	Toronto	Ontario

Sponsors (3)

Lead Sponsor	Collaborator
Life Recovery Systems	Kingston General Hospital, St. Michael's Hospital, Toronto

Country where clinical trial is conducted

Canada, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Time from collapse to achieving desired range of cooling (32.0 to 34.0°C)		Day of treatment	No
Primary	Time from deployment of the ThermoSuit™ (start of cooled water flow to patient) to core temperature < 34.0°C		Day of treatment	No
Primary	Total time during the first 24 hours after cooling is initiated that the core temperature is between 32.0 and 34.0°C.		First day after treatment	No
Primary	Protocol compliance: This is defined as the proportion of patients in whom compliance (i.e. target temperature range) is achieved 85% of the time.		First day after treatment	No
Primary	Ease of use of the TSS (evaluated by clinical staff using the Product Performance Assessment questionnaire, Appendix 7)		Day of treatment	No
Primary	Duration of maintenance of hypothermia without supplemental cooling		First day after treatment	No
Primary	Ease of maintenance of hypothermia for 24 hours (whether or not supplemental cooling is needed)		First day after treatment	No
Secondary	Total number of days in ICU		Time that patient is in ICU	No
Secondary	Barriers to compliance		First day after treatment	No
Secondary	Neurologic and physical status during in-hospital recovery		Time that patient is in hospital	Yes
Secondary	Neurologic and physical status at discharge		Time that patient is discharged from hospital	Yes
Secondary	Neurologic and physical status at 30 ± 7 days follow-up for surviving patients		30 ± 7 days after hospital discharge	Yes
Secondary	Incidence of shivering during cooling and maintenance of hypothermia		First day after treatment	No
Secondary	Requirements for use of paralysis to control shivering		First day after treatment	No
Secondary	Neurologic and physical status at 6 month ± 15 days follow-up.		6 months ± 15 days after hospital discharge	Yes

External Links

•   Website for Life Recovery Systems