Therapeutic Hypothermia to Improve Survival After Cardiac Arrest in Pediatric Patients-THAPCA-IH [In Hospital] Trial



Status:Completed
Conditions:Cardiology, Hospital
Therapuetic Areas:Cardiology / Vascular Diseases, Other
Healthy:No
Age Range:Any - 18
Updated:6/17/2018
Start Date:September 2009
End Date:February 2016

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Therapeutic Hypothermia After Pediatric Cardiac Arrest (In Hospital)

Cardiac arrest is a sudden, unexpected loss of heart function. Therapeutic hypothermia, in
which the body's temperature is lowered and maintained several degrees below normal for a
period of time, has been used to successfully treat adults who have experienced cardiac
arrest. This study will evaluate the efficacy of therapeutic hypothermia at increasing
survival rates and reducing the risk of brain injury in infants and children who experience a
cardiac arrest while in the hospital.

Cardiac arrest occurs when the heart suddenly stops beating and blood flow to the body is
halted. It can occur while people are in the hospital because of a medical condition or while
people are out of the hospital as a result of an accident or other cause. Cardiac arrest is a
serious event that is associated with high rates of death and long-term disability. When a
person experiences cardiac arrest,insufficient amount of blood flow and oxygen can result in
brain injury.

Therapeutic hypothermia is a therapy that involves a controlled lowering of the body
temperature and then maintenance of this lower temperature for a period of time. Therapeutic
hypothermia has been successfully used in adults who experience cardiac arrest to improve
survival rates and health outcomes, and it has also been studied in newborn infants who have
suffered from perinatal asphyxia. The purpose of this study is to evaluate the efficacy of
therapeutic hypothermia at improving survival rates and reducing brain injury in infants and
children who experience cardiac arrest while in the hospital.

Study researchers will conduct this study in collaboration with the following two pediatric
clinical research networks: the Pediatric Emergency Care Applied Research Network (PECARN),
funded by the Emergency Medical Services for Children (EMSC) program, and the National
Institute of Child Health and Human Development (NICHD) Collaborative Pediatric Critical Care
Research Network (CPCCRN).

The study will enroll infants and children who have suffered a cardiac arrest while in the
hospital. Randomization must occur within 6 hours of return of spontaneous circulation.
Participants will be randomly assigned to receive either therapeutic hypothermia or
therapeutic normothermia. Participants receiving therapeutic hypothermia will have their body
temperature reduced to between 32° and 34° Celsius (C) and will remain at this temperature
for 2 days. Their body temperature will then be slowly increased to the normal temperature of
36° to 37.5° C, which will be maintained until 5 days after the cardiac arrest. Participants
receiving therapeutic normothermia will have their normal temperature maintained between 36°
and 37.5° C for 5 days after the cardiac arrest. Special temperature control blankets will be
placed to maintain their body temperature in the assigned range. After 5 days, each
participant's temperature will be managed by their medical care team.

While participants are in the hospital, they will undergo frequent blood and urine
collections, chest x-rays, and temperature measurements; parents of participants will
complete questionnaires. When participants are ready to leave the hospital, study researchers
will perform a physical and functional assessment. Twenty-eight days after the cardiac
arrest, researchers will contact parents of participants to gather information on the
participants' health and medical condition. At Months 3 and 12, a child development expert
will contact parents to gather medical information. At Month 12, participants will attend a
study visit for a neurologic examination and testing with a psychologist trained in
rehabilitation.

Inclusion Criteria:

- Patient suffered cardiac arrest requiring chest compressions for at least 2 minutes
(120 seconds) with ROSC/ROC; AND

- Age greater than 48 hours (with a corrected gestational age of at least 38 weeks) and
less than 18 years; AND

- Patient requires continuous mechanical ventilation; AND

- The cardiac arrest was unplanned (i.e., not part of cardiac surgical procedure)

Exclusion Criteria:

- The parent or legal guardian does not speak English or Spanish (the only two languages
in which VABS II is standardized)

- Randomization is impossible within six hours of ROSC; OR

- Patient is on extracorporeal membrane oxygenation (ECMO) when arrest occurs; OR

- Continuous infusion of epinephrine or norepinephrine at very high doses (≥2
ug/kg/minute) received immediately prior to randomization; OR Glasgow Coma Scale motor
response of five (localizing pain or for infants less than two years, withdraws to
touch) or six (obeys commands, or for infants, normal spontaneous movement) prior to
randomization; OR

- History of a prior cardiac arrest with chest compressions for at least two minutes
during the current hospitalization but outside the 6 hour window for randomization; OR

- Pre-existing terminal illness with life expectancy < 12 months; OR

- Lack of commitment to aggressive intensive care therapies including do not resuscitate
orders and other limitations to care; OR

- Cardiac arrest was associated with severe brain, thoracic, or abdominal trauma; OR

- Active and refractory severe bleeding prior to randomization; OR

- Near drowning in ice water with patient core temperature ≤32 °C on presentation; OR

- Patient is pregnant; OR

- Patient participation in a concurrent interventional trial whose protocol, in the
judgment of the THAPCA investigators, prevents effective application of one or both
THAPCA therapeutic treatment arms, or otherwise significantly interferes with carrying
out the THAPCA protocol; OR

- Patient is newborn with acute birth asphyxia; OR

_ Patient cared for in a neonatal intensive care unit (NICU) after arrest (ie, would
not be admitted to PICU); OR

- Patient has sickle cell anemia; OR

- Patient known to have pre-existing cryoglobulinemia; OR

- Central nervous system tumor with ongoing chemotherapy or radiation therapy; OR

- Chronic hypothermia secondary to hypovolemic, pituitary, or related condition for
which body temperature is consistently below 37 °C ; OR progressive degenerative
encephalopathy; OR

- Any condition in which direct skin surface cooling would be contraindicated, such as
large burns, decubitus ulcers, cellulitis, or other conditions with disrupted skin
integrity (NOTE: patients with open chest CPR should be included but placement of
cooling mattresses will be modified as needed); OR

- Previous enrollment in the THAPCA Trials.
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San Francisco, California 94143
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4650 Sunset Blvd
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3901 Beaubien St
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4800 Sand Point Way NE
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555 University Avenue
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