TY - JOUR
T1 - Early acid-base and blood pressure effects of continuous renal replacement therapy intensity in patients with metabolic acidosis
AU - Bellomo, Rinaldo
AU - Lipcsey, Miklos
AU - Calzavacca, Paolo
AU - Haase, Michael
AU - Haase-Fielitz, Anja
AU - Licari, Elisa
AU - Tee, Augustine
AU - Cole, Louise
AU - Cass, Alan
AU - Finfer, Simon R
AU - Gallagher, Martin Patrick
AU - Lee, Joanne
AU - Lo, Serigne
AU - McArthur, Colin
AU - McGuinness, Shay P
AU - Myburgh, John A
AU - Scheinkestel, Carlos D
PY - 2013
Y1 - 2013
N2 - Purpose: In acute kidney injury patients, metabolic acidosis is common. Its severity, duration, and associated changes in mean arterial pressure (MAP) and vasopressor therapy may be affected by the intensity of continuous renal replacement therapy (CRRT). We aimed to compare key aspects of acidosis and MAP and vasopressor therapy in patients treated with two different CRRT intensities. Methods: We studied a nested cohort of 115 patients from two tertiary intensive care units (ICUs) within a large multicenter randomized controlled trial treated with lower intensity (LI) or higher intensity (HI) CRRT. Results: Levels of metabolic acidosis at randomization were similar [base excess (BE) of -8 ? 8 vs. -8 ? 7 mEq/l; p = 0.76]. Speed of BE correction did not differ between the two groups. However, the HI group had a greater increase in MAP from baseline to 24 h (7 ? 3 vs. 0 ? 3 mmHg; p <0.01) and a greater decrease in norepinephrine dose (from 12.5 to 3.5 vs. 5 to 2.5 ?g/min; p <0.05). The correlation (r) coefficients between absolute change in MAP and norepinephrine (NE) dose versus change in BE were 0.05 and -0.37, respectively. Conclusions: Overall, LI and HI CRRT have similar acid-base effects in patients with acidosis. However, HI was associated with greater improvements in MAP and vasopressor requirements (clinical trial no. NCT00221013).
AB - Purpose: In acute kidney injury patients, metabolic acidosis is common. Its severity, duration, and associated changes in mean arterial pressure (MAP) and vasopressor therapy may be affected by the intensity of continuous renal replacement therapy (CRRT). We aimed to compare key aspects of acidosis and MAP and vasopressor therapy in patients treated with two different CRRT intensities. Methods: We studied a nested cohort of 115 patients from two tertiary intensive care units (ICUs) within a large multicenter randomized controlled trial treated with lower intensity (LI) or higher intensity (HI) CRRT. Results: Levels of metabolic acidosis at randomization were similar [base excess (BE) of -8 ? 8 vs. -8 ? 7 mEq/l; p = 0.76]. Speed of BE correction did not differ between the two groups. However, the HI group had a greater increase in MAP from baseline to 24 h (7 ? 3 vs. 0 ? 3 mmHg; p <0.01) and a greater decrease in norepinephrine dose (from 12.5 to 3.5 vs. 5 to 2.5 ?g/min; p <0.05). The correlation (r) coefficients between absolute change in MAP and norepinephrine (NE) dose versus change in BE were 0.05 and -0.37, respectively. Conclusions: Overall, LI and HI CRRT have similar acid-base effects in patients with acidosis. However, HI was associated with greater improvements in MAP and vasopressor requirements (clinical trial no. NCT00221013).
UR - http://www-scopus-com.ezproxy.lib.monash.edu.au/record/display.url?eid=2-s2.0-84884211331&origin=resultslist&sort=plf-f&src=s&st1=Early+acid-base+and+
U2 - 10.1007/s00134-012-2800-0
DO - 10.1007/s00134-012-2800-0
M3 - Article
SN - 0342-4642
VL - 39
SP - 429
EP - 436
JO - Intensive Care Medicine
JF - Intensive Care Medicine
ER -