Document Detail

Improvement of left ventricular relaxation as assessed by tissue Doppler imaging in fluid-responsive critically ill septic patients.
MedLine Citation:
PMID:  22717694     Owner:  NLM     Status:  MEDLINE    
PURPOSE: Left ventricular (LV) diastolic function is often impaired in critically ill septic patients. The peak velocity of the mitral annulus early wave during diastole (E'), measured by Doppler echocardiography, is a major tool to evaluate LV relaxation, the ATP-dependent part of diastole. The authors hypothesized that if volume expansion (VE) is followed by an increase in stroke volume (SV) ("adequate" VE), LV relaxation and consequently E' may be increased.
METHODS: This was a prospective study in which 83 mechanically ventilated septic patients with circulatory failure were enrolled. Doppler echocardiography was performed before and after the infusion of 500 ml of saline over 20 min. Patients were then classified into two groups according to their response to VE: responders (R) were those in whom SV increased by at least 15 %; all others were considered to be non-responders (NR). SV, mitral flow early wave velocity (E), E' and the E/E' ratio were measured before and after VE. VE-induced variations (∆) in all parameters were compared in R and NR. Patients with an E' < 0.12 m/s were considered to have LV diastolic dysfunction.
RESULTS: Fifty-nine patients (71 %) were R and 24 (29 %) were NR. Fifty-six percent of R patients and 58 % of NR patients had LV diastolic dysfunction. For patients with LV diastolic dysfunction (n = 47), ∆E' was significantly higher in the R group (29 ± 5 vs. 5 ± 8 %; p = 0.01) whilst ∆E/E' was higher in the NR group (35 ± 9 vs. 2 ± 6 %; p = 0.02).
CONCLUSIONS: E' maximal velocity increased with adequate VE, suggesting an improvement of LV relaxation with the correction of hypovolaemia in patients with septic shock.
Yazine Mahjoub; Hélène Benoit-Fallet; Norair Airapetian; Emmanuel Lorne; Mélanie Levrard; Abdoul-Aziz Seydi; Nacim Amennouche; Michel Slama; Hervé Dupont
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Publication Detail:
Type:  Journal Article     Date:  2012-06-21
Journal Detail:
Title:  Intensive care medicine     Volume:  38     ISSN:  1432-1238     ISO Abbreviation:  Intensive Care Med     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-08-21     Completed Date:  2013-01-02     Revised Date:  2013-05-03    
Medline Journal Info:
Nlm Unique ID:  7704851     Medline TA:  Intensive Care Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1461-70     Citation Subset:  IM    
Medical and Surgical Intensive Care Unit, Department of Anaesthesia and Intensive Care, Amiens University Medical Centre, Amiens, France.
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MeSH Terms
Blood Flow Velocity
Critical Illness*
Echocardiography, Doppler*
Intensive Care Units
Middle Aged
Sepsis / pathology,  ultrasonography*
Stroke Volume*
Ventricular Function, Left*
Comment In:
Intensive Care Med. 2013 Apr;39(4):792   [PMID:  23340815 ]
Intensive Care Med. 2013 Apr;39(4):793   [PMID:  23340816 ]

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