Hemodynamics and metabolic studies on septic shock in patients with acute liver failure☆
Abstract
Backgrounds
Acute liver failure is often accompanied by hyperdynamic circulation, which is also a characteristic of septic shock. Pre-existing acute liver failure may worsen the hemodynamic impairment and prognosis in sepsis.
Aims
To evaluate the hemodynamic and metabolic characteristics and clinical outcomes of septic shock in patients with acute liver failure.
Methods
Twenty patients with acute liver failure and 19 patients without preexisting liver disease were evaluated. Systemic hemodynamics, arterial and mixed vein blood gases, arterial lactate levels, plasma renin activity, and plasma aldosterone levels were checked during the early phase of septic shock.
Results
In acute liver failure group, cardiac index (4.92 ± 1.13 vs 3.69 ± 1.06 L/min per square meter, P < .001) and oxygen delivery (604.7 ± 139.7 vs 485.4 ± 137.3 mL/min per square meter, P = .011) were significantly higher than those without preexisting liver diseases, while systemic vascular resistance index (1041.2 ± 503.3 vs 1409 ± 505.25 dyne·s/cm5·m2), oxygen consumption (119.1 ± 29.2 vs 162.4 ± 49.4 mL/min per square meter) and oxygen extraction ratio (20% ± 6% vs. 32% ± 8%) were significantly higher in the latter group. Furthermore, the patients with acute liver failure had higher arterial lactate (P = .026), plasma renin activity (P = .03), plasma aldosterone levels (P < .001), and intensive care unit as well as hospital mortality rates (P = .005, and 0.02 respectively).
Conclusions
In patients with acute liver failure, septic shock was characterized by an accentuated hyperdynamic circulation, hyperlactatemia and an augmented renin-angiotensin-aldosterone system activity. Pre-existing liver failure has a significant impact on the disease severity of septic shock and portends a grave prognosis.
Keywords: Hemodynamics, Tissue oxygenation, Septic shock, Acute liver failure
To access this article, please choose from the options below
☆ This work is partially supported by a grant from the Chang Gung Medical Research Fund CMRPG32064, Chang Gung Memorial Hospital, Taiwan.
PII: S0883-9441(08)00195-0
doi:10.1016/j.jcrc.2008.04.006
© 2008 Elsevier Inc. All rights reserved.
