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Randomized Controlled Trial
. 2017 Sep;14(9):1443-1449.
doi: 10.1513/AnnalsATS.201611-906OC.

Relationship between Race and the Effect of Fluids on Long-term Mortality after Acute Respiratory Distress Syndrome. Secondary Analysis of the National Heart, Lung, and Blood Institute Fluid and Catheter Treatment Trial

Sarah E Jolley  1 , Catherine L Hough  2 , Gilles Clermont  3 , Douglas Hayden  4 , Suqin Hou  4 , David Schoenfeld  4 , Nicholas L Smith  5 , Boyd Taylor Thompson  6 , Gordon R Bernard  7 , Derek C Angus  3 ; ARDS Network Investigators
Affiliations
Randomized Controlled Trial

Relationship between Race and the Effect of Fluids on Long-term Mortality after Acute Respiratory Distress Syndrome. Secondary Analysis of the National Heart, Lung, and Blood Institute Fluid and Catheter Treatment Trial

Sarah E Jolley et al. Ann Am Thorac Soc. 2017 Sep.

Abstract

Rationale: Short-term follow-up in the Fluid and Catheter Treatment Trial (FACTT) suggested differential mortality by race with conservative fluid management, but no significant interaction.

Objective: In a post hoc analysis of FACTT including 1-year follow-up, we sought to estimate long-term mortality by race and test for an interaction between fluids and race.

Methods: We performed a post hoc analysis of FACTT and the Economic Analysis of Pulmonary Artery Catheters (EAPAC) study (which included 655 of the 1,000 FACTT patients with near-complete 1-year follow up). We fit a multistate Markov model to estimate 1-year mortality for all non-Hispanic black and white randomized FACTT subjects. The model estimated the distribution of time from randomization to hospital discharge or hospital death (available on all patients) and estimated the distribution of time from hospital discharge to death using data on patients after hospital discharge for patients in EAPAC. The 1-year mortality was found by combining these estimates.

Results: Non-Hispanic black (n = 217, 25%) or white identified subjects (n = 641, 75%) were included. There was a significant interaction between race and fluid treatment (P = 0.012). One-year mortality was lower for black subjects assigned to conservative fluids (38 vs. 54%; mean mortality difference, 16%; 95% confidence interval, 2-30%; P = 0.027 between conservative and liberal). Conversely, 1-year mortality for white subjects was 35% versus 30% for conservative versus liberal arms (mean mortality difference, -4.8%; 95% confidence interval, -13% to 3%; P = 0.23).

Conclusions: In our cohort, conservative fluid management may have improved 1-year mortality for non-Hispanic black patients with ARDS. However, we found no long-term benefit of conservative fluid management in white subjects.

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Figures

Figure 1.
Figure 1.
Cohort derivation. FACTT = Fluids and Catheters Treatment Trial; EAPAC = Economic Analysis of Pulmonary Artery Catheters study.
Figure 2.
Figure 2.
Cumulative mortality stratified by race and fluid strategy. The estimated 1-year mortality was greatest for black subjects assigned to the liberal fluid group. There was a significant interaction between identified race and fluid treatment group (P = 0.012).
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References

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