Format

Send to

Choose Destination
See comment in PubMed Commons below
J Gastroenterol. 2005 Jan;40(1):57-63.

Pulmonary blood transit time and impaired arterial oxygenation in patients with chronic liver disease.

Author information

1
First Department of Internal Medicine, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan.

Abstract

BACKGROUND:

Contrast-enhanced echocardiography (CEE) using agitated saline can detect intrapulmonary vasodilatation (IPVD) in patients with hepatopulmonary syndrome (HPS). We estimated the pulmonary transit time of erythrocytes (PTT) by CEE, using microbubbles, and studied its relationship to arterial oxygenation in chronic liver disease.

METHODS:

Sixteen patients with chronic liver disease and seven healthy subjects were studied. PTT was defined as the time between opacification of the right atrium and left atrium on CEE, using human serum albumin-air microbubble complexes with a mean diameter of 4 microm (Albunex). IPVD was detected by CEE with agitated saline. Arterial blood gases were analyzed with patients in the supine position, and while they were seated. Cardiac output (CO) was determined by Doppler echocardiography.

RESULTS:

The mean PTT value for all of the patients was 4.0 +/- 1.4 s. One of the 3 patients who showed IPVD was normoxemic. Mild orthodeoxia was observed in the patients with abnormal alveolar-arterial oxygen difference (A-aDO2) values (>15 mmHg), but not in those with normal A-aDO2 values, or in the healthy subjects. PTT was correlated with PaO2 (r = 0.52; P < 0.05; n = 16) and A-aDO2 (r = -0.54; P < 0.05; n = 16) in the seated position. CO was significantly correlated with PTT (r = -0.62; P < 0.05; n = 15), but not with PaO2 and A-aDO2, in both positions.

CONCLUSIONS:

PTT may be a useful parameter for evaluating arterial oxygenation in patients with chronic liver disease with early HPS.

PMID:
15692790
DOI:
10.1007/s00535-004-1495-6
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Springer
    Loading ...
    Support Center