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. 2017 Mar;21(3):117-121.
doi: 10.4103/ijccm.IJCCM_318_16.

Changes in B-type Natriuretic Peptide and Related Hemodynamic Parameters Following a Fluid Challenge in Critically Ill Patients with Severe Sepsis or Septic Shock

Shahed Omar  1 , Ahmad Ali  1 , Yahya Atiya  1 , Rudo Lufuno Mathivha  1 , Joel M Dulhunty  2
Affiliations

Changes in B-type Natriuretic Peptide and Related Hemodynamic Parameters Following a Fluid Challenge in Critically Ill Patients with Severe Sepsis or Septic Shock

Shahed Omar et al. Indian J Crit Care Med. 2017 Mar.

Erratum in

Abstract

Context: Severe sepsis or septic shock.

Aims: The aim of this study is to examine the effect of a fluid challenge on the B-type natriuretic peptide (BNP) and the hemodynamic state.

Settings and design: This observational study was conducted in an intensivist-led academic, mixed medical-surgical Intensive Care Unit.

Subjects and methods: Focused transthoracic echocardiogram, plasma BNP, and hemodynamic measurements were recorded at baseline and following a 500 ml fluid challenge in thirty patients. Independent predictors of the percentage (%) change in stroke volume (SV) were sought. Next, these independent predictors were assessed for a relationship with the percentage change in BNP.

Statistical analysis used: Multiple linear regressions, Wilcoxon rank-sum test, t-test, and Pearson's correlation were used. Data analysis was carried out using SAS. The 5% significance level was used.

Results: Using a multiple regression models, the percentage increase in SV was independently predicted by the percentage increase in mean arterial pressure, left ventricular end-diastolic volume/dimension (LVEDV/LVEDd), ejection fraction, and a decrease in Acute Physiology and Chronic Health Evaluation II score (P < 0.0001). Preload, measured using LVEDV1 (before the fluid challenge) was significantly larger in the fluid nonresponders (%SV increase <15%) vs. the responders (%SV increase ≥15%). Finally, the percentage change in BNP was positively correlated with left ventricular size at end diastole LVEDd, r = 0.4, P < 0.035).

Conclusions: An increase in BNP soon after a fluid challenge may have some predictive utility of a large LVEDd, which in turn can be used to independently predict the SV response to a fluid challenge.

Keywords: B-type natriuretic peptide; critically ill; fluid challenge; hemodynamic; intensive care; sepsis; severe sepsis; shock.

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Conflict of interest statement

Shahed Omar received ± Rs. 12,000 from Alere SA and Ilex SA and BD for lectures given on unrelated topics.

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