The relationship between inferior vena cava diameter measured by bedside ultrasonography and central venous pressure value.
OBJECTIVE
We aimed to present inferior vena cava (IVC) diameter as a guiding method for detection of relationship between IVC diameter measured noninvasively with the help of ultrasonography (USG) and central venous pressure (CVP) and evaluation of patient's intravascular volume status.


METHODS
Patients over the age of 18, to whom a central venous catheter was inserted to their subclavian vein or internal jugular vein were included in our study. IVC diameter measurements were recorded in millimeters following measurement by the same clinician with the help of USG both at the end-inspiratory and end-expiratory phase. CVP measurements were viewed on the monitor by means of piezoelectric transducer and recorded in mmHg. SPSS 18.0 package program was used for statistical analysis of data.


RESULTS
Forty five patients were included in the study. The patients had the diagnosis of malignancy (35.6%), sepsis (13.3%), pneumonia, asthma, chronic obstructive pulmonary disease (11.1%). 11 patients (24.4%) required mechanical ventilation while 34 (75.6%) patients had spontaneous respiration. In patients with spontaneous respiration, a significant relationship was found between IVC diameters measured by ultrasonography at the end of expiratory and inspiratory phases and measured CVP values at the same phases (for expiratory p = 0.002, for inspiratory p= 0.001). There was no statistically significant association between IVC diameters measured by ultrasonography at the end of expiration and inspiration and measured CVP values at the same phases in mechanically ventilated patients.


CONCLUSIONS
IVC diameter measured by bedside ultrasonography can be used for determination of the intravascular volume status of the patients with spontaneous respiration.
Serenat Citilcioglu, MD, Emergency Medicine Service, Cukurova Dr. Askim Tufekci State Hospital, Adana, Turkey.
Serenat
S
Citilcioglu
Ahmet Sebe, MD, Department of Emergency Medicine, Cukurova University, School of Medicine, Adana Turkey.
Ahmet
A
Sebe
Mehmet Oguzhan Ay, MD, Department of Emergency Medicine, Adana Numune Education and Research Hospital, Adana, Turkey.
Mehmet Oguzhan
MO
Ay
Ferhat Icme, MD, Department of Emergency Medicine, Ankara Numune Education and Research Hospital, Ankara, Turkey.
Ferhat
F
Icme
Akkan Avci, MD, Department of Emergency Medicine, Adana Numune Education and Research Hospital, Adana, Turkey.
Akkan
A
Avci
Muge Gulen, MD, Emergency Medicine Service, Eskisehir Yunus Emre State Hospital, Eskisehir, Turkey.
Muge
M
Gulen
Mustafa Sahan, MD, Department of Emergency Medicine, Elazig Education and Research Hospital, Elazig, Turkey.
Mustafa
M
Sahan
Salim Satar, MD, Department of Emergency Medicine, Adana Numune Education and Research Hospital, Adana, Turkey.
Salim
S
Satar
CVP; Emergency; Ultrasonography; Vena cava inferior diameter