Evaluation of Time-Limited Trials Among Critically Ill Patients With Advanced Medical Illnesses and Reduction of Nonbeneficial ICU Treatments

Abstract

Importance: For critically ill patients with advanced medical illnesses and poor prognoses, overuse of invasive intensive care unit (ICU) treatments may prolong suffering without benefit.

Objective: To examine whether use of time-limited trials (TLTs) as the default care-planning approach for critically ill patients with advanced medical illnesses was associated with decreased duration and intensity of nonbeneficial ICU care.

Design, setting, and participants: This prospective quality improvement study was conducted from June 1, 2017, to December 31, 2019, at the medical ICUs of 3 academic public hospitals in California. Patients at risk for nonbeneficial ICU treatments due to advanced medical illnesses were identified using categories from the Society of Critical Care Medicine guidelines for admission and triage.

Interventions: Clinicians were trained to use TLTs as the default communication and care-planning approach in meetings with family and surrogate decision makers.

Main outcomes and measures: Quality of family meetings (process measure) and ICU length of stay (clinical outcome measure).

Results: A total of 209 patients were included (mean [SD] age, 63.6 [16.3] years; 127 men [60.8%]; 101 Hispanic patients [48.3%]), with 113 patients (54.1%) in the preintervention period and 96 patients (45.9%) in the postintervention period. Formal family meetings increased from 68 of 113 (60.2%) to 92 of 96 (95.8%) patients between the preintervention and postintervention periods (P < .01). Key components of family meetings, such as discussions of risks and benefits of ICU treatments (preintervention, 15 [34.9%] vs postintervention, 56 [94.9%]; P < .01), eliciting values and preferences of patients (20 [46.5%] vs 58 [98.3%]; P < .01), and identifying clinical markers of improvement (9 [20.9%] vs 52 [88.1%]; P < .01), were discussed more frequently after intervention. Median ICU length of stay was significantly reduced between preintervention and postintervention periods (8.7 [interquartile range (IQR), 5.7-18.3] days vs 7.4 [IQR, 5.2-11.5] days; P = .02). Hospital mortality was similar between the preintervention and postintervention periods (66 of 113 [58.4%] vs 56 of 96 [58.3%], respectively; P = .99). Invasive ICU procedures were used less frequently in the postintervention period (eg, mechanical ventilation preintervention, 97 [85.8%] vs postintervention, 70 [72.9%]; P = .02).

Conclusions and relevance: In this study, a quality improvement intervention that trained physicians to communicate and plan ICU care with family members of critically ill patients in the ICU using TLTs was associated with improved quality of family meetings and a reduced intensity and duration of ICU treatments. This study highlights a patient-centered approach for treating critically ill patients that may reduce nonbeneficial ICU care.

Trial registration: ClinicalTrials.gov Identifier: NCT04181294.

Figure 1.. Patient Enrollment in Preintervention and Postintervention Study Periods

ICU indicates intensive care unit.

Figure 2.. Interrupted Time-Series Analysis of Intensive Care Unit (ICU) Length of Stay (LOS)

The solid line indicates trends in median ICU LOS by study weeks. The vertical dotted line separates the preintervention and postintervention periods. The dashed horizontal lines represent predicted values from segmented regression analysis (preintervention, β = −0.001; postintervention, β = 0.024). There was an abrupt decrease of 3.3 days at the start of the postintervention period (95% CI, –6.52 to –0.08 days; P = .045).