Inferior vena cava diameter and central venous pressure correlation during cardiac surgery.
OBJECTIVE
The purpose of this study was to determine whether a relationship exists between the inferior vena cava diameter (IVCD) or the superior vena cava diameter (SVCD) measured at the point of entry into the right atrium using transesophageal echocardiography (TEE) and the central venous pressure (CVP) under different experimental conditions.


METHODS
Prospective study.


METHODS
University hospital, single institution.


METHODS
Seventy patients undergoing elective cardiac surgery.


METHODS
CVP, IVCD, and SVCD were measured in a 2-dimensional, long-axis midesophageal bicaval view at end-diastole with electrocardiographic synchronization. Data were recorded during suspended ventilation, before and after leg elevation, and at different levels of positive end-expiratory pressure (0, 5, and 10 cmH(2)O).


RESULTS
The relationship between IVCD and CVP had 2 portions: A first (CVP <or=11 mmHg) in which the IVCD showed a strong correlation with the CVP (R = 0.801, p < 0.001; CVP = 2.009 + [0.312 * IVCD]) and a second (CVP >11 mmHg) in which the correlation was poor (R = 0.272, p = 0.065). No correlation between SVCD and CVP was observed.


CONCLUSIONS
A strong correlation between TEE-derived IVCD measured at the point of entry into the right atrium and CVP was observed in cardiac surgical patients when CVP was <or=11 mmHg.
Department of Anesthesiology, University Hospital Antwerp, Edegem, Belgium.
Suraphong
S
Lorsomradee
Sratwadee
S
Lorsomradee
Stefanie
S
Cromheecke
Pieter W
PW
ten Broecke
Stefan G
SG
De Hert
D000368:Aged; D006348:Cardiac Surgical Procedures / Q000379:methods*; D002496:Central Venous Pressure / Q000502:physiology*; D017548:Echocardiography, Transesophageal / Q000379:methods; D017558:Elective Surgical Procedures / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006331:Heart Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008991:Monitoring, Physiologic / Q000379:methods*; D011175:Positive-Pressure Respiration; D011446:Prospective Studies; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging*