title: Brief report: effects of positive end-expiratory pressure on internal jugular vein cross-sectional area in anesthetized adults.
abstract: We tested whether positive end-expiratory pressure (PEEP) increases right internal jugular vein (RIJV) cross-sectional area (CSA) in 45 ASA physical status I and II adults. All patients received a standardized IV fluid bolus, induction of general anesthesia, tracheal intubation, and mechanical ventilation. We evaluated the CSA of the RIJV using ultrasound without PEEP (control) and with PEEP (10 cm H(2)O) in the supine, level position. Addition of PEEP increased RIJV CSA 0.42 + or - 0.41 cm(2) (mean + or - SD, median 0.34 cm(2), P < 0.001), which represented a 41% mean increase in CSA.
authors.affiliation: Department of Anesthesiology, Naval Medical Center San Diego, 34800 Bob Wilson Dr., San Diego, CA 92134, USA. kerry.hollenbeck@med.navy.mi
authors.forename: Kerry J
authors.initials: KJ
authors.lastname: Hollenbeck
authors.forename: Bryan M
authors.initials: BM
authors.lastname: Vander Schuur
authors.forename: Matthew R
authors.initials: MR
authors.lastname: Tulis
authors.forename: Brian W
authors.initials: BW
authors.lastname: Mecklenburg
authors.forename: Cory P
authors.initials: CP
authors.lastname: Gaconnet
authors.forename: Scott C
authors.initials: SC
authors.lastname: Wallace
authors.forename: Eugenio
authors.initials: E
authors.lastname: Lujan
authors.forename: Ivan K
authors.initials: IK
authors.lastname: Lesnik
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000768:Anesthesia, General; D005260:Female; D006801:Humans; D007442:Intubation, Intratracheal; D007601:Jugular Veins / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011175:Positive-Pressure Respiration; D016683:Supine Position / Q000502:physiology; D014463:Ultrasonography; D055815:Young Adult