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Efekty afektywne przedoperacyjnych opioidów: randomizowana, podwójnie ślepa próba kontrolowana placebo (AFFECT2)

21 września 2026 zaktualizowane przez: Harald Lenz, Oslo University Hospital

Zrozumienie używania opioidów przed i po operacji w Norwegii: prospektywne badanie wieloośrodkowe i randomizowane badanie kontrolowane metodą podwójnie ślepej próby

  1. To investigate and compare the affective short-term effects of opioid drugs: morphine, oxycodone and fentanyl, administered to the patients before the induction of general anesthesia.
  2. Charting opioid use after surgery in patients treated at hospitals in Norway
  3. Identify predictors for postoperative opioid use and persistent pain

Przegląd badań

Szczegółowy opis

The aim of the present study is to assess and compare, with a randomized, double-blind placebo-controlled trial, the affective effects of three commonly used opioid analgesics (Morphine, oxycodone and fentanyl) administered in three different doses before surgery in a clinical setting associated with physiological and psychological stress.

As a starting point, we have conducted an observational quality control study on peri-operative opioid pain management in day surgery patients.

Quality control study - a pilot study In this observational quality control study, we measured acute effects of the opioid agonist Remifentanil (effect site concentration 5ng/ml, Minto model) in day surgery patients on the operating table at Kongsberg hospital. Patients rated their levels of "feeling good" and "anxious" on a 0-10 numerical rating scale (NRS) immediately before and 1 minute after receiving remifentanil infusion. They also rated drug-specific effects such as "feeling high", "liking the drug effects" and their "level of drug-related discomfort". Moreover, we collected data on postoperative opioid use and pain during recovery through a telephone interview on the day following the surgery. The study was conducted with the usual standard hospital treatment and as such, did not interfere with the patients' medical procedures. All the procedures were approved by the data protection officer at Kongsberg Hospital, and all included patients signed informed consent on the day of surgery.

In the weeks prior to surgery participants received a questionnaire to assess their pain levels, nervousness and demographics as part of the hospital's standard procedure. On the day of surgery, approximately 30 min before surgery (T2) patients were asked to fill in questionnaires to assess mood, pain and prior opioid use. One minute before and one minute after opioid ( administration (T3), the patient was asked to rate mood, anxiety, drug liking and drug related discomfort. On the day following surgery patients were contacted by phone to assess their mood, pain and pain interference, as well as their pain relief strategies in the last 24h (e.g. use of provided analgesics).

160 patients were included in the pilot quality control study. The results of the pilot study show that patients report a clear feeling of 'drug high' after remifentanil infusion. Surprisingly, however, the opioid analgesic induced only a weak reduction of anxiety, and the majority of patients reported feeling worse or equally good, but not better, after the infusion. In the postoperative phone interview, many patients tell us they have not used any of the opioid drugs prescribed for at-home pain relief during the first 24 hours are recovering at home. Stated reasons include a fear of addiction, as well as a wish to keep the analgesics in case of breakthrough/peak pain at a later stage. These preliminary results do not support the opioid pre-induction procedure as an effective manner to produce pre-surgery stress relief. It might be possible that the subjective perception of stress relief does not match the physiological relief reaction to stress.

On the basis of these intriguing, preliminary findings, we will now conduct a more comprehensive randomized double-blind controlled study comparing different classes of pre-surgical opioid analgesics on the subjective and physiological affective reactions in an acute stress clinical situation in Norway.

Possible participants of the AFFECT2 RCT (randomized controlled trial) will also be asked if they wish to join a parallel longitudinal study conducted in collaboration with the University of Oslo (UiO) in which we will collect and analyse data on relevant pre-surgery risk factors for problematic opioid use, and to quantify opioid-induced analgesia before and after surgery using prescription registry data.

Typ studiów

Interwencyjne

Zapisy (Rzeczywisty)

1014

Faza

  • Faza 4

Kontakty i lokalizacje

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

Lokalizacje studiów

    • Oslo
      • Oslo, Oslo, Norwegia
        • Harald Lenz

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 i starsze (Dorosły, Starszy dorosły)

Akceptuje zdrowych ochotników

Nie

Płeć kwalifikująca się do nauki

Wszystko

Opis

Inclusion Criteria:

- Health status ASA1 (American Society of Anesthesiologists physical status) or ASA2 as categorised by a medical doctor at the hospital based on medical history, physical examination, laboratory test etc. unrelated to the current study.

ASA1 and ASA2 (ASA1 is defined as "Healthy, non-smoking, no or minimal alcohol use" and ASA2 is defined as "Mild diseases only without substantive functional limitations). Being eligible for day surgery means participants are overtly healthy as determined by clinical staff.

  • The participant is considered as eligible for the use of fentanyl, morphine and oxycodone by a medical doctor at the hospital, based on an overall assessment of the psychiatric and somatic condition, used medical drugs, regarding possible interactions and contraindications for the use of the study medicaments.
  • Body weight and body mass index (BMI) within the range 18-35 kg/m2 (inclusive).
  • Capable of giving signed informed consent as which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.
  • Having good verbal communication skills in Norwegian.
  • Patients undergoing planned day surgery with general anesthesia (outpatient sample).
  • Orthopedic, rectal, gynecological, hand and foot surgery, and minor vascular procedures.
  • Inpatients undergoing planned gynecological and orthopedic surgery.
  • Hysterectomy, laparoscopic ovariectomy, lumbal herniotomy and other related procedures.
  • Minor gastrointestinal surgery

Exclusion Criteria:

  1. Known allergic reactions to morphine, oxycodone,or fentanyl. Known allergic reactions to any of the incredients described in the SPC, pt 6.1.
  2. Severe chronic obstructive lung disease,
  3. Cor pulmonale,
  4. Severe bronchial asthma,
  5. Severe respiratory failure with hypoxemia and hypercapnia
  6. Moderate to severe hepatic impairment,
  7. Moderate to severe kidney failure
  8. Acute abdomen
  9. Increased brain pressure
  10. Head trauma
  11. Use of MAO blockers in the last two weeks
  12. Hypovolemia
  13. Hypotension
  14. Myasthenia gravis
  15. Any other health status not corresponding to ASA1 or ASA2. This includes patients with severe disease burden, major psychiatric disorders that could interfere with the procedures and communication.
  16. Pregnancy. Women of childbearing potential defined as all premenopausal female (a postmenopausal state is defined as no menses for 12 months without an alternative medical cause) will be asked if they are pregnant.
  17. Breastfeeding women.
  18. Illegal drugs use like opioids, cocaine and amphetamine

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

  • Główny cel: Inny
  • Przydział: Randomizowane
  • Model interwencyjny: Przydział równoległy
  • Maskowanie: Podwójnie

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Komparator placebo: Placebo

The patient is given standardized questions about their well-being and affective state before and after the administration of placebo (0.9% NaCl intravenously). This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of placebo intravenously. This is carried out on the operating table right before anesthesia

Inne nazwy:
  • 0,9% NaCl, Natriumklorid 9 mg/ml, Hameln (kod ATC: B05B B01)
Aktywny komparator: Morphine 2.5 mg

The patient is given standardized questions about their well-being and affective state before and after the administration of morphine 2.5 mg intravenously. This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of 2.5 mg morphine intravenously. This is carried out on the operating table right before anesthesia

Inne nazwy:
  • Morfina, Orion (kod ATC: N02A A01)
Aktywny komparator: Morphine 5 mg

The patient is given standardized questions about their well-being and affective state before and after the administration of morphine 5 mg intravenously. This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of morphine 5 mg intravenously . This is carried out on the operating table right before anesthesia

Inne nazwy:
  • Morfina, Orion (kod ATC: N02A A01)
Aktywny komparator: Morphine 10 mg

The patient is given standardized questions about their well-being and affective state before and after the administration of morphine 10 mg intravenously. This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of morphine 10 mg intravenously . This is carried out on the operating table right before anesthesia

Inne nazwy:
  • Morfina, Orion (kod ATC: N02A A01)
Aktywny komparator: Oxycodone 2.5 mg

The patient is given standardized questions about their well-being and affective state before and after the administration of oxycodone 2.5 mg intravenously. This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of oxycodone 2.5 mg intravenously . This is carried out on the operating table right before anesthesia

Inne nazwy:
  • Oksykodon, Hameln (kod ATC: N02A A05)
Aktywny komparator: Oxycodone 5 mg

The patient is given standardized questions about their well-being and affective state before and after the administration of oxycodone 5 mg intravenously. This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of oxycodone 5 mg intravenously . This is carried out on the operating table right before anesthesia

Inne nazwy:
  • Oksykodon, Hameln (kod ATC: N02A A05)
Aktywny komparator: Oxycodone 10 mg

The patient is given standardized questions about their well-being and affective state before and after the administration of oxycodone 10 mg intravenously. This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of oxycodone 10 mg intravenously . This is carried out on the operating table right before anesthesia

Inne nazwy:
  • Oksykodon, Hameln (kod ATC: N02A A05)
Aktywny komparator: Fentanyl 0.025 mg

The patient is given standardized questions about their well-being and affective state before and after the administration of fentanyl 0.025 mg intravenously. This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of fentanyl 0.025 mg intravenously . This is carried out on the operating table right before anesthesia

Inne nazwy:
  • Fentanyl, Hameln (kod ATC: N01A H01)
Aktywny komparator: Fentanyl 0.05 mg

The patient is given standardized questions about their well-being and affective state before and after the administration of fentanyl 0.05 mg intravenously. This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of fentanyl 0.05 mg intravenously . This is carried out on the operating table right before anesthesia

Inne nazwy:
  • Fentanyl, Hameln (kod ATC: N01A H01)
Aktywny komparator: Fentanyl 0.1 mg

The patient is given standardized questions about their well-being and affective state before and after the administration of fentanyl 0.1 mg intravenously. This is carried out on the operating table right before anesthesia

The patient is given standardized questions about their well-being and affective state before and after the administration of fentanyl 0.1 mg intravenously . This is carried out on the operating table right before anesthesia

Inne nazwy:
  • Fentanyl, Hameln (kod ATC: N01A H01)

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Anxious
Ramy czasowe: 8-10 minutes

Asking the patient of feeling anxious; Numeric rating scale 0 -10 prior opioid and post opioid intravenously (or placebo). 0=not anxious and 10=feeling extremely anxious

8-10 minutes
Relaxed
Ramy czasowe: 8-10 minutes

Asking the patient of feeling relaxed. Numeric rating scale 0 -10 prior opioid and post opioid intravenously (or placebo). 0=not relaxed and 10=very relaxed.

8-10 minutes
Pain level
Ramy czasowe: 8-10 minutes

Asking the patient of pain level. Numeric rating scale 0 -10 prior opioid and post opioid intravenously (or placebo). 0=no pain and 10= worst pain imaginable

8-10 minutes
Good
Ramy czasowe: 8-10 minutes

Asking the patient of feeling good. Numeric rating scale 0 -10 prior opioid and post opioid intravenously (or placebo). 0=feeling no good and 10= feeling very good.

8-10 minutes
Dizzy
Ramy czasowe: 2-4 minutes

Asking the patient of feeling dizzy. Numeric rating scale 0-10 post opioid intravenously (or placebo). 0=feeling not dizzy and 10=feeling very dizzy.

2-4 minutes
Sedated
Ramy czasowe: 2-4 minutes

Asking the patient of feeling sedated. Numeric rating scale 0-10 post opioid intravenously (or placebo). 0=feeling not sedated and 10=feeling very sedated.

2-4 minutes
Feeling high, Numeric rating scale 0 -10
Ramy czasowe: 2-4 minutes

Asking the patient of feeling high. Numeric rating scale 0-10 post opioid intravenously (or placebo). 0=feeling not high and 10=feeling very high.

2-4 minutes
Euphoric
Ramy czasowe: 2-4 minutes

Asking the patient of feeling high. Numeric rating scale 0-10 post opioid intravenously (or placebo). 0=feeling not euphoric and 10=feeling very euphoric.

2-4 minutes
Drug liking
Ramy czasowe: 2-4 minutes

Asking the patient of drug liking. Numeric rating scale 0-10 post opioid intravenously (or placebo). 0=feeling not drug liking and 10=feeling very drug liking.

2-4 minutes
Drug disliking
Ramy czasowe: 2-4 minutes

Asking the patient of drug disliking. Numeric rating scale 0-10 post opioid intravenously (or placebo). 0=feeling not drug disliking and 10=feeling very drug disliking.

2-4 minutes

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Onset time
Ramy czasowe: Subjective onset time of the three opioids during the 2 minutes observation time before anaesthesia induction

Determine onset time of subjective drug effect of the three opioids (each at three different doses) and proportion of participants that report feeling a drug effect within 0-2 minutes

Subjective onset time of the three opioids during the 2 minutes observation time before anaesthesia induction

Inne miary wyników

Miara wyniku
Opis środka
Ramy czasowe
Heart rate
Ramy czasowe: 10 min

beats/min prior opioid and post opioid intravenously

10 min
Heart rate variability
Ramy czasowe: 10 min

Heart rate variability (HRV) prior opioid and post opioid intravenously

10 min

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Śledczy

  • Główny śledczy: Gernot Ernst, MD,PhD, Kongsberg Hospital, Vestre Viken Health Trust Norway

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 (Rzeczywisty)

13 grudnia 2022

Zakończenie podstawowe (Rzeczywisty)

27 maja 2025

Ukończenie studiów (Rzeczywisty)

27 czerwca 2025

Daty rejestracji na studia

Pierwszy przesłany

17 listopada 2022

Pierwszy przesłany, który spełnia kryteria kontroli jakości

28 listopada 2022

Pierwszy wysłany (Rzeczywisty)

6 grudnia 2022

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

24 września 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

21 września 2026

Ostatnia weryfikacja

1 września 2026

Więcej informacji

Terminy związane z tym badaniem

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

NIE

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

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 .

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