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Cerebral Blood Flow During CPB During Cardiac Surgery and the Presence of Post op Delirium

5. februar 2016 opdateret af: Dr Kaushik Mandal, Johns Hopkins University

Non Invasive Monitoring of Cerebral Blood Flow During and After Cardiopulmonary Bypass to Assess and Compare for the Presence of Delirium in Post Operative Patients (DELIRIUM)

Cardiac surgery is associated with multiple events and issues that increase risk for adverse postoperative neurological outcomes including postoperative cognitive dysfunction. The risk for postoperative delirium is generally thought to result from some previous health factors added to the susceptibility of the cardiac surgery process.

Studieoversigt

Status

Afsluttet

Betingelser

Detaljeret beskrivelse

Cardiac surgery is associated with multiple perturbations that increase risk for adverse postoperative neurological outcomes including postoperative cognitive dysfunction. These same perturbations likely also increase the risk for postoperative delirium although there are little data that have evaluated this hypothesis.

As the subject is prepared for surgery 2 contact probes will be placed on the forehead to monitor the rSO2 and cerebral blood flow. This monitor can also measureblood flow velocity in blood vessels in the forehead.

This will only be done while the subject is on the cardiac bypass machine during the surgery and end shortly after entering the intensive care unit.Prior to surgery and then once a day on three of the first four postoperative days, patients will be assessed for the presence and severity of delirium with brief standard psychological exams. We will compare rSO2 and CBF changes between patients with and without delirium

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

110

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Maryland
      • Baltimore, Maryland, Forenede Stater, 21287
        • Johns Hopkins Hospital

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

50 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Subjects who are under going cardiac bypass surgery with the use of cardiac perfusion

Beskrivelse

Inclusion Criteria:

  • Patients in the study will be 50 or older undergoing elective cardiovascular surgery using cardiopulmonary bypass.
  • Patients who can speak, read and understand the English language.
  • Patients who understand the nature of the study and are willing to sign the consent form

Exclusion Criteria:

  • Emergency surgery or patients intubated before surgery and, thus, cannot give informed consent.
  • Patients diagnosed with neurocognitive disorders (e.g. Alzheimer's, Dementia)
  • MMSE score greater than 21 Patients taking antipsychotic drugs A history of drug abuse
  • Patients with an implant in the brain underneath the CerOx probes
  • Women who are pregnant.
  • History of significant, prohibitive skin allergies or reactions-

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
no intervention
Contact with enrolled subjects requires application of ceberal oximetry electrodes and the concommittent ultrasound of the temporal artery. Deemed interventional by JHUIRB but no actual intervention done to subject.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
To evaluate whether rSO2 and/or CBF during CPB is lower in patients who experience delirium within three days after cardiac surgery compared with patients without delirium
Tidsramme: 3 days post op
To evaluate whether rSO2 and/or CBF during CPB is lower in patients who experience delirium within three days after cardiac surgery compared with patients without delirium.
3 days post op

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
recovery pattern of rSO2
Tidsramme: 3 post op days
To evaluate the recovery pattern of rSO2 and CBF for up to 6 hrs after CPB for ICU patients who experience delirium within three days after cardiac surgery compared with patients without delirium.
3 post op days

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Can CBF autoregulation can be monitored using ultrasound compared with TCD
Tidsramme: 3 days post op
To assess whether CBF autoregulation can be monitored using ultrasound tagged light methodology compared with TCD
3 days post op
To evaluate the incidence of delirium in patients with impaired autoregulation
Tidsramme: 3 days post op
To evaluate the incidence of delirium in patients with impaired autoregulation
3 days post op

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Samarbejdspartnere

Efterforskere

  • Ledende efterforsker: Kaushik Mandal, MD, Johns Hopkins University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. juni 2013

Primær færdiggørelse (Faktiske)

1. oktober 2015

Studieafslutning (Faktiske)

1. februar 2016

Datoer for studieregistrering

Først indsendt

25. februar 2014

Først indsendt, der opfyldte QC-kriterier

7. marts 2014

Først opslået (Skøn)

12. marts 2014

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

9. februar 2016

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

5. februar 2016

Sidst verificeret

1. februar 2016

Mere information

Begreber relateret til denne undersøgelse

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Delirium

Abonner