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Hemodynamic Changes and Trigeminocardiac Reflex During Bimaxillary Orthognathic Surgery

24. juli 2026 opdateret af: 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.

Studieoversigt

Status

Rekruttering

Betingelser

Detaljeret beskrivelse

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.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

18

Kontakter og lokationer

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

Studiekontakt

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

Undersøgelse Kontakt Backup

Studiesteder

    • Kırıkkale
      • Kirikkale, Kırıkkale, Tyrkiet (Türkiye), 71450
        • Rekruttering
        • Kırıkkale Univesity Faculty of Dentistry
        • Kontakt:
        • Ledende efterforsker:
          • Elif Çoban, DDS
        • Kontakt:

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

  • Voksen

Tager imod sunde frivillige

Ingen

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

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.

Beskrivelse

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.

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
Patients undergoing bimaxillary orthognathic surgery
Patients undergoing bimaxillary orthognathic surgery under routine intraoperative monitoring.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Number of Participants With Trigeminocardiac Reflex (TCR)
Tidsramme: 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

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Systolic Blood Pressure
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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

Samarbejdspartnere og efterforskere

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

Sponsor

Efterforskere

  • Ledende efterforsker: Elif Çoban, DDS, Kırıkkale University Faculty of Dentistry

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 (Faktiske)

20. juni 2026

Primær færdiggørelse (Anslået)

20. juni 2027

Studieafslutning (Anslået)

20. juli 2027

Datoer for studieregistrering

Først indsendt

21. juli 2026

Først indsendt, der opfyldte QC-kriterier

21. juli 2026

Først opslået (Faktiske)

24. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

28. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

24. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • Decision No: 2026.04.66

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

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.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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