- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT07665645
Postoperative Cognitive Function After Different Anesthetic Techniques in Obese Patients
Effects of Low-Flow Sevoflurane, Normal-Flow Sevoflurane, and Total Intravenous Anesthesia on Postoperative Cognitive Function in Obese Patients Undergoing Laparoscopic Abdominal Surgery
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
Obesity is associated with physiological alterations that may increase the risk of postoperative cognitive dysfunction (POCD). The influence of anesthetic techniques on postoperative cognitive outcomes in obese patients remains uncertain.
This prospective randomized study was conducted in obese patients (BMI ≥30 kg/m²) aged 18-65 years undergoing elective laparoscopic abdominal surgery under general anesthesia. Patients were randomly assigned to one of three groups: low-flow sevoflurane anesthesia, normal-flow sevoflurane anesthesia, or total intravenous anesthesia (TIVA). Anesthetic depth was monitored using bispectral index (BIS) monitoring and maintained between 40 and 60 in all groups.
The primary objective was to compare postoperative cognitive function among the three anesthetic techniques using the Mini-Mental State Examination (MMSE). MMSE scores were evaluated preoperatively, at postoperative 30 minutes, and on postoperative day 3.
Secondary objectives included comparison of recovery characteristics, including eye-opening time, extubation time, Modified Aldrete Recovery Scores, and perioperative hemodynamic parameters.
The study was approved by the Marmara University Faculty of Medicine Clinical Research Ethics Committee (Approval No. 09.2022.744) and written informed consent was obtained from all participants before enrollment.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
-
-
Istanbul
-
Istanbul, Istanbul, Türkei (türkiye), 34899
- Marmara University Faculty of Medicine Pendik Training and Research Hospital
-
-
Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Beschreibung
Inclusion Criteria:
- Age between 18 and 65 years
- Body mass index (BMI) ≥30 kg/m²
- ASA physical status I-III
- Scheduled for elective laparoscopic abdominal surgery
- Provision of written informed consent
Exclusion Criteria:
- History of psychiatric disease
- Dementia or known cognitive impairment
- Hearing or language disorders preventing MMSE assessment
- Refusal to participate
- Conversion from laparoscopic to open surgery
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Doppelt
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
|
Experimental: Low-Flow Sevoflurane
Patients received sevoflurane anesthesia with a fresh gas flow of 1 L/min during maintenance of anesthesia.
Anesthetic depth was maintained with BIS values between 40 and 60.
|
Maintenance of general anesthesia with sevoflurane inhalation.
Patients were assigned to either low-flow (1 L/min) or normal-flow (3 L/min) fresh gas flow anesthesia protocols.
|
|
Experimental: Normal-Flow Sevoflurane
Patients received sevoflurane anesthesia with a fresh gas flow of 3 L/min during maintenance of anesthesia.
Anesthetic depth was maintained with BIS values between 40 and 60.
|
Maintenance of general anesthesia with sevoflurane inhalation.
Patients were assigned to either low-flow (1 L/min) or normal-flow (3 L/min) fresh gas flow anesthesia protocols.
|
|
Experimental: Total Intravenous Anesthesia (TIVA)
Patients received total intravenous anesthesia with propofol and remifentanil infusion.
Anesthetic depth was maintained with BIS values between 40 and 60.
|
Maintenance of total intravenous anesthesia using continuous propofol infusion under BIS monitoring.
Continuous remifentanil infusion was administered during maintenance of anesthesia according to study protocol.
|
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Mini-Mental State Examination (MMSE) Score
Zeitfenster: Preoperative, postoperative 30 minutes, and postoperative day 3
|
Postoperative cognitive function assessed using the Mini-Mental State Examination (MMSE).
|
Preoperative, postoperative 30 minutes, and postoperative day 3
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Eye Opening Time
Zeitfenster: End of surgery
|
Time from discontinuation of anesthetic administration to spontaneous eye opening
|
End of surgery
|
|
Extubation Time
Zeitfenster: End of surgery
|
Time from discontinuation of anesthetic administration to tracheal extubation.
|
End of surgery
|
|
Modified Aldrete Recovery Score
Zeitfenster: Postoperative recovery period
|
Recovery status assessed using the Modified Aldrete Score.
|
Postoperative recovery period
|
|
heart rate
Zeitfenster: During surgery
|
patient's intraoperative measured heart rate
|
During surgery
|
|
mean arterial pressure
Zeitfenster: during surgery
|
patient's intraoperative measured mean arterial pressure
|
during surgery
|
|
oxygen saturation
Zeitfenster: During surgery
|
oxygen saturation of the patient will be recorded
|
During surgery
|
|
end-tidal carbon dioxide
Zeitfenster: During surgery
|
end-tidal carbon dioxide of the patient will be recorded
|
During surgery
|
Mitarbeiter und Ermittler
Sponsor
Ermittler
- Hauptermittler: Ahmet Tunca, MD, Department of Anesthesiology and Reanimation, Gaziantep City Hospital
- Studienstuhl: Seniyye Ü Zengin, MD, Department of Anesthesiology and Reanimation, Marmara University Faculty of Medicine, Pendik Training and Research Hospital
- Studienleiter: Meliha O Ergün, MD, Department of Anesthesiology and Reanimation, Marmara University Faculty of Medicine, Pendik Training and Research Hospital
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Ernährungsstörungen
- Überernährung
- Körpergewicht
- Übergewicht
- Pathologische Zustände, Anzeichen und Symptome
- Ernährungs- und Stoffwechselerkrankungen
- Anzeichen und Symptome
- Fettleibigkeit
- Organische Chemikalien
- Heterocyclische Verbindungen, 1-Ring
- Heterocyclische Verbindungen
- Ethers
- Kohlenwasserstoffe
- Kohlenwasserstoffe, zyklisch
- Säuren, acyclisch
- Carboxylsäuren
- Kohlenwasserstoffe, aromatisch
- Piperidine
- Phenole
- Benzolderivate
- Kohlenwasserstoffe, halogeniert
- Kohlenwasserstoffe, fluoriert
- Propionate
- Methylether
- Remifentanil
- Sevofluran
- Propofol
Andere Studien-ID-Nummern
- MU-09.2022.744
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