Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

28 September 2012

Correlation Between Bispectral Index, Observational Sedation Scale, and Lower Esophageal Sphincter Pressure in Volunteers Using Dexmedetomidine or Propofol

Alparslan TuranABDEF, Jarrod E. DaltonCD, Yusuke KasuyaBF, Ozan AkçaABE, Daniel I. SesslerDE, Stefan RauchABDEF

DOI: 10.12659/MSM.883484

Med Sci Monit 2012; 18(10): CR593-596

Abstract

BACKGROUND: Many anesthetics reduce lower esophageal sphincter pressure (LESP) and consequently the gastroesophageal pressure gradient (GEPG); thus they may promote gastro-esophageal reflux and contribute to aspiration pneumonia. Our goals were to evaluate the association between LESP and 2 measures of sedation: bispectral index (BIS) and the responsiveness component of the Observer’s Assessment of Alertness score (OAA/S).

MATERIAL AND METHODS: Eleven healthy volunteers were each sedated on 2 separate days. Subjects were given sedative infusions of increasing target plasma concentrations of dexmedetomidine or propofol. LESP and GEPG were recorded after starting each infusion phase. Generalized estimating equation modeling was used to assess the relationship between LESP and, respectively, BIS and OAA/S. The existence of a drug-dependent association was evaluated within these models by testing an interaction term. Wald tests were used to evaluate the relationships within the models.

RESULTS: We found a significant relationship between LESP and BIS (P=0.0043) after adjusting for the main effect of sedative type – a deepening of sedation as measured by a decrease in BIS of 10% was associated with a decrease [Bonferroni-adjusted 95% CI] in LESP of –1.34 [–2.39, –0.29] mmHg. After adjusting for the main effect of sedative drug, LESP significantly declined with declining OAA/S (P=0.001); a unit decrease of OAA/S was associated with a decrease [Bonferroni-adjusted 95% CI] in LESP of –2.01 [–3.20, –0.81] mmHg.

CONCLUSIONS: Deeper sedation, as measured by either BIS or OAA/S, significantly reduces LESP.

Keywords: Hypnotics and Sedatives - pharmacology, Pressure, Esophageal Sphincter, Lower - physiology, Dexmedetomidine - pharmacology, Consciousness Monitors, Conscious Sedation, Propofol - pharmacology, young adult

Add Comment 0 Comments

Editorial

01 February 2025 : Editorial  

Editorial: Current Approaches to Screening for Lung Cancer in Smokers and Non-Smokers

Dinah V. Parums

DOI: 10.12659/MSM.948255

Med Sci Monit 2025; 31:e948255

0:00

In Press

Clinical Research  

Correlation Descriptive Study on Nurses' Professional Values and Job Satisfaction and the Ethical Climate o...

Med Sci Monit In Press; DOI: 10.12659/MSM.945639  

Clinical Research  

Pre- and Post-Surgical MRI Analysis of Levator Ani in Pelvic Organ Prolapse Patients: A Single-Center Study

Med Sci Monit In Press; DOI: 10.12659/MSM.945993  

Clinical Research  

Comparative Impact of Kinesio Taping and Post-Isometric Muscle Relaxation on Pain and Myofascial Mechanics ...

Med Sci Monit In Press; DOI: 10.12659/MSM.945376  

Clinical Research  

Surgical Efficacy in Varicocele Ligation with Ephedrine-Assisted Blood Pressure Control

Med Sci Monit In Press; DOI: 10.12659/MSM.946234  

Most Viewed Current Articles

17 Jan 2024 : Review article   6,968,210

Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron Variant

DOI :10.12659/MSM.942799

Med Sci Monit 2024; 30:e942799

0:00

16 May 2023 : Clinical Research   701,772

Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...

DOI :10.12659/MSM.940387

Med Sci Monit 2023; 29:e940387

0:00

01 Mar 2024 : Editorial   25,357

Editorial: First Regulatory Approvals for CRISPR-Cas9 Therapeutic Gene Editing for Sickle Cell Disease and ...

DOI :10.12659/MSM.944204

Med Sci Monit 2024; 30:e944204

0:00

28 Jan 2024 : Review article   19,972

A Review of IgA Vasculitis (Henoch-Schönlein Purpura) Past, Present, and Future

DOI :10.12659/MSM.943912

Med Sci Monit 2024; 30:e943912

0:00

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750