Ta strona została przetłumaczona automatycznie i dokładność tłumaczenia nie jest gwarantowana. Proszę odnieść się do angielska wersja za tekst źródłowy.

Study of Survivors of Different Types of Cardiac Arrest and Their Neurological Recovery

9 stycznia 2014 zaktualizowane przez: Eyad AlThenayan, Lawson Health Research Institute

Neurological Outcomes After Cardiac Arrest in Pulseless Electrical Activity in Comparison to Asystole. Are All Non-shockable Rhythms the Same?

After successful resuscitation from certain types of cardiac arrest, total body cooling is now a well established treatment that improves the chances of the brain recovering. This however, has only been definitively proven after a certain type of cardiac arrest that is "ventricular fibrillation / ventricular tachycardia". The purpose of this study is to explore if total body cooling is beneficial for patients recovering from another type of cardiac arrest that is "pulseless electrical activity".

HYPOTHESIS:

Patients undergoing post-cardiac arrest therapeutic hypothermia have better neurological outcomes if their initial arrest rhythm is pulseless electrical activity (PEA) in comparison to asystole.

Przegląd badań

Szczegółowy opis

STUDY RATIONALE AND BACKGROUND INFORMATION:

After successful resuscitation from cardiac arrest the body experiences a period of global reperfusion. During this period, patients may show signs of myocardial stunning, lactic acidosis, neurological injury and reperfusion syndrome. This constellation of findings constitutes what is known as post-cardiac arrest syndrome. The brain appears to be one of the most vulnerable organs to injury during this reperfusion phase and varying degrees of cognitive impairment may be the end result. Inducing mild therapeutic hypothermia has been shown to be protective for the brain in this setting and has been demonstrated to improve neurological recovery. The evidence for this however, is only conclusive in cases where the arrest is in a shockable rhythm i.e. pulseless ventricular tachycardia and ventricular fibrillation.

In 2002, two randomized controlled trials were published showing an improvement in neurological outcomes in patients treated with mild therapeutic hypothermia post resuscitation from shockable cardiac arrest. Therapeutic hypothermia has since been widely adopted by most authorities as part of the comprehensive treatment bundle for post cardiac arrest syndrome. Whether there is any benefit for patients arrested in non-shockable rhythms however, is a matter of controversy. Some have reported improved mortality and better neurological outcomes with therapeutic hypothermia in this patient population. Others have reported no benefit or even a trend towards harm. And although the matter remains controversial, the recommendation still stands for therapeutic hypothermia to be offered for all comatose survivors of cardiac arrest whatever the arrest rhythm.

Most previous reports have examined the differences between shockable and non-shockable rhythms in terms of neurological outcome and mortality rates after therapeutic hypothermia. To our knowledge, no study has examined the differences in outcome between the two types of non-shockable rhythms, that is pulseless electrical activity (PEA) and asystole. We hypothesize that during PEA arrests, patients may retain some degree of cerebral perfusion and hence have better neurological outcomes post-resuscitation. That is in contrast to asystole where patients are likely to have no cerebral perfusion. In this study we attempt to detect any possible differences in neurological recovery (as indicated by the Cerebral Performance Category scale on hospital discharge) after therapeutic hypothermia, between patients arrested in PEA arrest and those arrested in asystole.

Typ studiów

Obserwacyjny

Zapisy (Oczekiwany)

400

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Lokalizacje studiów

    • Ontario
      • London, Ontario, Kanada, N6A 5A5
        • University Hospital, London Health Sciences Centre, University of Western Ontario
      • London, Ontario, Kanada, N6A 5W9
        • Victoria Hospital, London Health Sciences Centre, University of Western Ontario

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

18 lat do 90 lat (Dorosły, Starszy dorosły)

Akceptuje zdrowych ochotników

Nie

Płeć kwalifikująca się do nauki

Wszystko

Metoda próbkowania

Próbka bez prawdopodobieństwa

Badana populacja

All patients admitted to the intensive care unit (ICU) with a diagnosis of postcardiac arrest between Jan 2008 and Dec 2012 will be examined.

Opis

Inclusion Criteria:

  • Admission to adult ICU (age ≥18 years) at London Health Sciences Centre
  • Primary reason for ICU admission: postcardiac arrest
  • Both in-hospital and out-of-hospital cardiac arrest will be included
  • ICU admission between Jan 2008 and Dec 2012.

Exclusion Criteria:

- ICU admissions primarily for reasons other than cardiac arrest.

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Modele obserwacyjne: Kohorta
  • Perspektywy czasowe: Z mocą wsteczną

Kohorty i interwencje

Grupa / Kohorta
Interwencja / Leczenie
Shockable arrest
Initial arrest rhythm shockable. This is either pulseless ventricular tachycardia (pulseless VT) or ventricular fibrillation (VF).
No therapeutic hypothermia was induced.
Inne nazwy:
  • No therapeutic hypothermia.
  • Kontrola.
Hypothermia was induced after successful resuscitation from cardiac arrest.
Inne nazwy:
  • Hipotermia
  • Induced hypothermia
  • Mild therapeutic hypothermia
  • Chłodzenie
  • Targeted temperature management
Pulseless electrical activity
Initial arrest rhythm is pulseless electrical activity.
No therapeutic hypothermia was induced.
Inne nazwy:
  • No therapeutic hypothermia.
  • Kontrola.
Hypothermia was induced after successful resuscitation from cardiac arrest.
Inne nazwy:
  • Hipotermia
  • Induced hypothermia
  • Mild therapeutic hypothermia
  • Chłodzenie
  • Targeted temperature management
Asystole
Initial arrest rhythm is asystole.
No therapeutic hypothermia was induced.
Inne nazwy:
  • No therapeutic hypothermia.
  • Kontrola.
Hypothermia was induced after successful resuscitation from cardiac arrest.
Inne nazwy:
  • Hipotermia
  • Induced hypothermia
  • Mild therapeutic hypothermia
  • Chłodzenie
  • Targeted temperature management

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Cerebral performance category score on hospital discharge
Ramy czasowe: Upon discharge from hospital, assessed up to 36 months postcardiac arrest

Neurological outcome on discharge from hospital as defined by the cerebral performance category (CPC) scale. The CPC scale is a 5 point scale. The outcome measure will be dichotomized into good or bad. Good outcome will be equivalent to CPC scores of 1 & 2 (where the patient is independent), and bad outcome will be equivalent to CPC scores of 3, 4 & 5 (where the patient is either dependent or dead).

CPC Scale:

  1. Functioning normally and independent, possibly with a minor disability.
  2. Moderately disabled, still independent.
  3. Conscious but with a severe disability, dependent.
  4. Unconscious (comatose or in a persistent vegetative state).
  5. Brain dead or dead by traditional criteria.
Upon discharge from hospital, assessed up to 36 months postcardiac arrest

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Hospital length of stay postcardiac arrest
Ramy czasowe: Days spent in hospital after successful resuscitation from cardiac arrest, assessed up to 36 months from the date of cardiac arrest
Hospital length of stay (LOS) post-cardiac arrest will be calculated from the day of the cardiac arrest to the day of hospital discharge. If prior to the arrest the patient was an inpatient, we will only count the days from the arrest to discharge. Days spent in hospital prior to the arrest will not be included.
Days spent in hospital after successful resuscitation from cardiac arrest, assessed up to 36 months from the date of cardiac arrest
Intensive care unit length of stay postcardiac arrest
Ramy czasowe: Days spent in the intensive care unit after successful resuscitation from cardiac arrest, assessed up to 36 months from the date of cardiac arrest
The length of stay (LOS) in the intensive care unit (ICU) in days, after successful resuscitation from cardiac arrest.
Days spent in the intensive care unit after successful resuscitation from cardiac arrest, assessed up to 36 months from the date of cardiac arrest
Neurological status after hospital discharge
Ramy czasowe: Assessed up to 12 months from hospital discharge
Neurological status as documented on the patient's first outpatient clinic visit, assessed up to 12 months from hospital discharge. This will be analyzed as a secondary outcome only if enough data is generated on chart review.
Assessed up to 12 months from hospital discharge

Inne miary wyników

Miara wyniku
Opis środka
Ramy czasowe
Time to obeying commands
Ramy czasowe: Assessed up to 21 days postcardiac arrest
Total time in days from the cardiac arrest until the patient is able to obey commands, as documented in the patient's chart.
Assessed up to 21 days postcardiac arrest
Documented negative neurological prognosticators
Ramy czasowe: Upon withdrawal of life support, assessed up to 3 months postcardiac arrest

For patient's in which the reason for withdrawal of life support is poor neurological outcome, the number of negative neurological prognosticators recorded in the chart will be examined.

Examples of negative prognosticators include: negative somatosensory evoked potentials on post arrest day 3, post arrest status epilepticus, absent brain stem reflexes beyond post arrest day 2... etc.

Upon withdrawal of life support, assessed up to 3 months postcardiac arrest
Post arrest neurological investigations (including imaging studies)
Ramy czasowe: Performed within 21 days from cardiac arrest
All neurological investigations done within 21 days from cardiac arrest will be examined including electroencephalograms, somatosensory evoked potentials, brain magnetic resonance imaging, brain computerized tomography (CT) scans... etc.
Performed within 21 days from cardiac arrest

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Śledczy

  • Główny śledczy: Eyad Althenayan, MD, Western University, Canada
  • Dyrektor Studium: Philip Jones, MD, FRCPC, Western University, Canada
  • Krzesło do nauki: Bryan Young, MD, FRCPC, Western University, Canada
  • Dyrektor Studium: Ahmed F Hegazy, MD, FRCPC, Western University, Canada
  • Dyrektor Studium: Ana Igric, MD, FRCSC, Western University, Canada
  • Dyrektor Studium: Carolyn Benson, MD, Western University, Canada

Publikacje i pomocne linki

Osoba odpowiedzialna za wprowadzenie informacji o badaniu dobrowolnie udostępnia te publikacje. Mogą one dotyczyć wszystkiego, co jest związane z badaniem.

Publikacje ogólne

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów

1 stycznia 2014

Zakończenie podstawowe (Oczekiwany)

1 grudnia 2014

Ukończenie studiów (Oczekiwany)

1 lutego 2015

Daty rejestracji na studia

Pierwszy przesłany

4 stycznia 2014

Pierwszy przesłany, który spełnia kryteria kontroli jakości

9 stycznia 2014

Pierwszy wysłany (Oszacować)

13 stycznia 2014

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Oszacować)

13 stycznia 2014

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

9 stycznia 2014

Ostatnia weryfikacja

1 stycznia 2014

Więcej informacji

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .

Badania kliniczne na No treatment

Subskrybuj