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Hemodynamic Changes and Trigeminocardiac Reflex During Bimaxillary Orthognathic Surgery

24 juli 2026 bijgewerkt door: Elif Çoban, Kırıkkale University

Observational Evaluation of Hemodynamic Parameters Using Routine Intraoperative Monitoring Data in Patients Undergoing Bimaxillary Orthognathic Surgery

This observational study aims to evaluate hemodynamic changes occurring during bimaxillary orthognathic surgery using routinely collected intraoperative monitoring data. Heart rate, systolic and diastolic blood pressure, mean arterial pressure, and oxygen saturation will be recorded during different stages of surgery as part of standard clinical care.

The study will also evaluate the occurrence of the trigeminocardiac reflex (TCR) and its association with patient characteristics and surgical stages. No additional interventions, laboratory tests, or procedures will be performed beyond routine clinical practice. The findings may contribute to the early recognition and management of intraoperative hemodynamic changes during orthognathic surgery.

Studie Overzicht

Toestand

Werving

Conditie

Gedetailleerde beschrijving

This study will use a prospective observational cohort design. Patients undergoing bimaxillary orthognathic surgery at the Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Kırıkkale University, will be included. Intraoperative hemodynamic data routinely collected as part of standard clinical monitoring will be recorded and analyzed. Hemodynamic parameters, including systolic blood pressure, diastolic blood pressure, heart rate, and peripheral oxygen saturation, will be recorded at 5-minute intervals throughout the surgical procedure.Hemodynamic parameters will be evaluated according to the different stages of surgery. The maxillary surgical stages will include anesthesia induction, incision, bone cutting, pterygoid intraoral incision, right and left lateral wall osteotomies, medial and lateral nasal wall osteotomies, maxillary down-fracture, maxillary mobilization, plate fixation, and suturing. The mandibular surgical stages will include anesthesia induction, incision, lingula incision, external oblique incision, osteotomy, mandibular separation, mandibular mobilization, plate fixation, and suturing.The occurrence of trigeminocardiac reflex (TCR) will be assessed simultaneously with the hemodynamic parameters recorded at each surgical stage. TCR will be classified as mild when heart rate and/or blood pressure decreases by 10-20% from baseline values and as severe when the decrease exceeds 20% and/or is accompanied by cardiac rhythm disturbances. Patients with and without TCR will be compared with respect to demographic characteristics and intraoperative hemodynamic changes observed during different surgical stages. No additional interventions, laboratory tests, or invasive procedures will be performed beyond routine clinical care. The findings of this study are expected to improve the understanding of intraoperative hemodynamic responses and contribute to the early recognition and management of TCR during bimaxillary orthognathic surgery.

Studietype

Observationeel

Inschrijving (Geschat)

18

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

  • Naam: Elif Assistant Professor, DDS
  • Telefoonnummer: 71 +90 318 224 4927
  • E-mail: elifcoban@kku.edu.tr

Studie Contact Back-up

Studie Locaties

  • Turkije (Türkiye)
    • Kırıkkale
      • Kirikkale, Kırıkkale, Turkije (Türkiye), 71450
        • Werving
        • Kırıkkale Univesity Faculty of Dentistry
        • Contact:
        • Hoofdonderzoeker:
          • Elif Çoban, DDS
        • Contact:

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen

Accepteert gezonde vrijwilligers

Nee

Bemonsteringsmethode

Niet-waarschijnlijkheidssteekproef

Studie Bevolking

The study population will consist of adult patients aged 18-40 years who are scheduled to undergo bimaxillary orthognathic surgery at the Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Kırıkkale University. Eligible participants who provide written informed consent will be enrolled in this prospective observational cohort study. During surgery, routinely monitored intraoperative hemodynamic parameters and the occurrence of the trigeminocardiac reflex (TCR) will be evaluated according to the different stages of the surgical procedure.

Beschrijving

Inclusion Criteria:

  • Adults aged 18-40 years.
  • Patients with an indication for bimaxillary orthognathic surgery.
  • Patients with complete routine intraoperative hemodynamic monitoring data.
  • Patients who provide written informed consent to participate in the study.

Exclusion Criteria:

  • Patients without an indication for bimaxillary orthognathic surgery.
  • Individuals younger than 18 years or older than 40 years.
  • Patients with known cardiovascular disease, including arrhythmia, heart failure, coronary artery disease, or other significant cardiovascular disorders.
  • Patients with systemic diseases, including diabetes mellitus, hypertension, thyroid disorders, or other significant systemic conditions.
  • Patients with diagnosed psychiatric disorders.
  • Patients with incomplete or irregularly recorded intraoperative hemodynamic monitoring data.
  • Individuals who refuse to participate or do not provide written informed consent.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

Cohorten en interventies

Groep / Cohort
Patients undergoing bimaxillary orthognathic surgery
Patients undergoing bimaxillary orthognathic surgery under routine intraoperative monitoring.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Number of Participants With Trigeminocardiac Reflex (TCR)
Tijdsspanne: During surgery
The occurrence of trigeminocardiac reflex (TCR) during surgery will be assessed, and the number of participants who experience TCR will be reported
During surgery

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Systolic Blood Pressure
Tijdsspanne: During surgery
Systolic blood pressure will be recorded at 5-minute intervals during surgery and evaluated according to the different stages of bimaxillary orthognathic surgery.
During surgery
Diastolic Blood Pressure
Tijdsspanne: During surgery
Diastolic blood pressure will be recorded at 5-minute intervals during surgery and evaluated according to the different stages of bimaxillary orthognathic surgery.
During surgery
Heart Rate
Tijdsspanne: During surgery
Heart rate will be recorded at 5-minute intervals during surgery and evaluated according to the different stages of bimaxillary orthognathic surgery.
During surgery
Peripheral Oxygen Saturation
Tijdsspanne: During surgery
Peripheral oxygen saturation (SpO₂) will be recorded at 5-minute intervals during surgery and evaluated according to the different stages of bimaxillary orthognathic surgery.
During surgery

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Kırıkkale University

Onderzoekers

  • Hoofdonderzoeker: Elif Çoban, DDS, Kırıkkale University Faculty of Dentistry

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

20 juni 2026

Primaire voltooiing (Geschat)

20 juni 2027

Studie voltooiing (Geschat)

20 juli 2027

Studieregistratiedata

Eerst ingediend

21 juli 2026

Eerst ingediend dat voldeed aan de QC-criteria

21 juli 2026

Eerst geplaatst (Werkelijk)

24 juli 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

28 juli 2026

Laatste update ingediend die voldeed aan QC-criteria

24 juli 2026

Laatst geverifieerd

1 juli 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • Decision No: 2026.04.66

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Beschrijving IPD-plan

De-identified individual participant data, including demographic characteristics, intraoperative hemodynamic parameters (systolic blood pressure, diastolic blood pressure, heart rate, and peripheral oxygen saturation), surgical stage data, and trigeminocardiac reflex (TCR) data, will be made available upon reasonable request to the corresponding author after publication of the study results.

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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