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* From the Palliative Care Service, Detroit Receiving Hospital, and the Division of Pulmonary and Critical Care Medicine, Wayne State University, Detroit, MI.
Correspondence to: Jorge A. Guzman, MD, Room 3935, 3 Hudson, Harper University Hospital, 3990 John R, Detroit, MI 48201; e-mail: jguzman{at}intmed.wayne.edu.
| Abstract |
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Design: Comparative study of retrospective and prospective cohorts.
Setting: Medical ICU of a university hospital.
Interventions: Patterns of end-of life care for patients with MOSF and GCI obtained through a retrospective chart review were compared to proactive case finding facilitated by the inpatient palliative care service. Interventions included identification of patients advance directives or preferences about end-of life care, if any; assistance with discussion of the prognosis and treatment options with patients or their surrogates; and implementation of palliative care strategies when treatment goals changed to a focus on comfort measures.
Results: Although our retrospective data demonstrated a high percentage of do-not-resuscitate decisions for the patients under investigation, a considerable time lag elapsed between identification of the poor prognosis and the establishment of end-of-life treatment goals (4.7 ± 2.4 days and 3.5 ± 0.5 days for patients with MOSF and GCI, respectively [mean ± SE]). The proactive case finding approach decreased hospital length of stay (mean, 20.6 ± 4.1 days vs 15.1 ± 2.5 days and 8.6 ± 1.6 days vs 4.7 ± 0.6 days for MOSF and GCI patients, respectively; p = 0.063 and < 0.001, respectively). More importantly, a proactive palliative care intervention decreased the time between identification of the poor prognosis and the establishment of comfort care goals (7.3 ± 2.9 days vs 2.2 ± 0.8 days and 6.3 ± 1.2 days vs 3.5 ± 0.4 days for MOSF and GCI patients, respectively; p < 0.05 for both), decreased the time dying patients with MOSF remained in the ICU, and reduced the use of nonbeneficial resources, thus reducing the cost of care.
Conclusions: Proactive interventions from a palliative care consultant within this subset of patients decreased the use of nonbeneficial resources and avoided protracted dying.
Key Words: anoxic encephalopathy critical care multiple organ system failure palliative care
| Introduction |
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Some argue that the best method to improve ICU care at the end of life is to define the goals of care in advance of ICU admission. However, this strategy is limited by the fact that pre-ICU communications about preferences for cardiopulmonary resuscitation and prolonged mechanical ventilation are uncommon among seriously ill hospitalized adults.7 8 Moreover, even when the patient or surrogate wishes are known, clinicians may not abide by those prestated preferences.9 This strategy further assumes that reliable predictors for successful ICU outcomes exist, when it remains difficult to predict with certainty who will die,10 11 thus highlighting the importance of end-of-life care competence among ICU clinicians.
Although approaches to making improvements in hospital care of the dying have been proposed, the most extensive study to understand the prognosis and preferences for outcomes and risks of treatments (Study to Understand Prognoses and Preferences for Outcomes and Risks of Treatment [SUPPORT]) presented an unattractive picture of the care of seriously ill or dying persons.12 The SUPPORT trial led their principle investigators to conclude that perhaps more creative interventions and more proactive measures might be needed to improve the quality of end-of-life care for critically ill patients. Positive patient and institutional outcomes through consultation with an inpatient palliative care program and proactive ethics consultation for high-risk ICU populations offer promising approaches to improve decision making and communications and to reduce ICU length of stay (LOS) for dying patients.13 14 15 16 17
To date, most of the literature about end-of-life care in the ICU focuses on the whole ICU population, and little information exists about disease-specific care at the end of life. Conditions such as multiple organ system failure (MOSF) occurs in approximately 14% of the patients admitted to an ICU; and, although the presence of three organs failing simultaneously occurs less frequently, it is nearly always a fatal condition.18 19 However, despite the associated poor prognosis, the majority of these patients are treated aggressively until their death.18 19 Similarly, patients with persistent coma after cardiopulmonary resuscitation are frequently treated aggressively in ICU despite a dim prognosis for functional neurologic recovery.20 21 It would seem that based on the poor prognosis for recovery among these subgroups of patients, a compassionate approach focusing on comfort is more appropriate than protracted, aggressive ICU support. We studied the impact of a proactive case finding approach to end-of life care for hopelessly ill patients experiencing severe global cerebral ischemia (GCI) after cardiopulmonary resuscitation and advanced MOSF in comparison to historical control subjects.
| Materials and Methods |
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Study Population
GCI:
Patients with cerebral ischemia after cardiac arrest with any of the following physical findings 24 h after cardiac arrest were included in the study: coma, absent pupillary and/or corneal reflexes, posturing or absent response to deep painful stimuli, and tonic-clonic seizures or myoclonic jerks attributed to cerebral ischemia. Patients were excluded if they were < 18 years old, were receiving barbiturates or neuromuscular blocking agents, or had clinical criteria for brain death.
MOSF:
MOSF was defined according to the classic criteria of Knaus et al,18
and patients were included in the study when they had three or more organ systems simultaneously in failure for
3 days.
Study Design
Retrospective Cohort:
Patients with GCI were identified by the medical record coding system using the words ICU and cardiac arrest. The medical records were then reviewed, and subjects with GCI meeting inclusion criteria were included in the study. Patients with MOSF were identified by MICU discharge diagnosis-related groups for organ failures. The diagnosis-related group was only used as a filter to identify potential study subjects. Once identified, the charts were reviewed and the medical records of patients discharged from the MICU with three or more organs in failure were selected for subsequent analysis.
Proactive Palliative Care: During the period of July 1, 1999, to June 30, 2000, members of the palliative care service of Detroit Receiving Hospital (M.L.C. and J.A.G.) screened the MICU census daily for any patient meeting the study criteria with the following aims: (1) early involvement of the palliative care service in the process of communicating prognostic news to the family; (2) assistance in identifying patients advance directives or preferences for end-of life care, if any; (3) assistance with discussion of the prognosis and treatment options with patients or their surrogates; (4) implementation of palliative care strategies when goals changed to "comfort measures only" (CMO); and (5) provision of consultation and education to the primary team regarding palliative care strategies. The MICU team at Detroit Receiving Hospital is comprised of a faculty intensivist who rotates every 2 weeks, and two fellows in critical care and four residents in internal medicine who rotate every month. A clinical pharmacist, a respiratory therapist, and a clinical dietician are also part of the ICU team. The palliative care service consists of a dedicated nurse practitioner and two rotating physicians (an internist and an intensivist) with interest and training in end-of-life care.13 15
Proactive Interventions
GCI:
On the day of MICU admission, patients were identified for study inclusion. As part of routine clinical care for patients after cardiac arrest, an EEG was ordered on the morning of the second day and families or surrogates were informed of the probability of a poor prognosis based on the duration of cardiopulmonary resuscitation and the physical findings.20
21
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On the second MICU day, a family meeting was convened and changes in the patients medical condition were communicated, and their understanding of the previous discussion was ascertained and clarified as needed. On the third MICU day, the poor prognosis was confirmed with the MICU team based on physical findings and EEG report before that daily family meeting. Based on prognosis, a change of treatment goals to a focus on comfort-oriented care was recommended, and ventilator withdrawal was discussed as an option. On subsequent MICU days, meetings were held if the family was still undecided or unwilling to accept the recommended treatment goals. When treatment goals were changed to CMO, the palliative care service remained involved to facilitate implementation of palliative care interventions, facilitate withdrawal of support if indicated, and to move the patient from the ICU if death was not imminent.
MOSF: Once patients were identified and included in the study, members of the palliative care service were updated by the primary MICU team about the family or surrogate understanding of disease severity and anticipated outcome. Subsequent daily family meetings were held to confirm the poor prognosis and recommend a change in treatment goals to CMO. As with the patients with GCI, if goals changed to CMO the palliative care service remained involved in the patients terminal care.
Data Collection
Age, gender, APACHE (acute physiology and chronic health evaluation) II score25
and Therapeutic Intervention Scoring System (TISS)26
values on admission to the MICU were recorded. In addition, TISS points 24 h before and after a change in DNR status, hospital and MICU LOS, frequency and goals of DNR orders, time from admission or development of MOSF to a change in DNR status and from a DNR status to death were recorded. Daily resource use in dollars was calculated from TISS points assigning $300 per point that adjusts to $350 for inflation.27
28
To ensure accuracy of data abstraction, the data collection protocol and data collectors remained the same throughout the study. DNR goals were classified as "withhold" if one or more life-sustaining measures were to be withheld from the patients treatment plan, or as CMO if the emphasis of ongoing treatment was the patients comfort and/or withdrawal of life support.
Statistical Analysis
Summary values are expressed as percentage, mean ± SE, and median and range. Unpaired Student t test was used when comparing variables between groups, and paired Student t test was used for intragroup comparisons. Fisher exact test was used to compare frequency of DNR orders between groups. Probability values (two-tailed) of < 0.05 were considered statistically significant. Statistical calculations were performed using SPSS for Windows (version 9.0; SPSS; Chicago, IL) software.
| Results |
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| Discussion |
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Even though our sample is relatively small, the incidence of severe MOSF, as defined in our study, is comparable to other reports.18 19 In addition, the similar number of patients enrolled retrospectively and prospectively diminishes the possibility of selection bias, which could otherwise be raised as a limitation in a before/after study. In spite of less available data evaluating the incidence of CGI after cardiac arrest in a general MICU, the comparable number of patients with CGI in both study phases make us believe that the above is true for this subset of patients too.
Although our retrospective data demonstrates that the percentage of designated DNR patients is higher than previously described,31 32 a considerable time lag elapsed between the identification of the patients prognosis and designation of DNR. Furthermore, judging by the type and frequency of DNR orders observed in the retrospective cohort, there was more ease in establishing goals to withhold resuscitation and other interventions than for establishing goals directed at comfort measures only. In spite of a population that has a nearly always fatal outcome, such as patients with severe GCI after cardiopulmonary resuscitation and prolonged MOSF, physicians were likely to consider withdrawing treatment from these patients only later in the course of the illness. Delayed recognition of the poor prognosis by clinicians and/or patient surrogates opposing to recommendations to change treatment goals could potentially explain the above.
A proactive palliative care approach significantly decreased the time between identification of MOSF and the establishment of a DNR order. More importantly, this approach decreased the time hopelessly ill patients spent in the ICU before a change in treatment goals to a focus on comfort was decided, compared to the retrospective group. These findings are different from those reported by the SUPPORT trial.12 Early collaborative interventions after the patients prognosis was identified, and involvement throughout the ICU course between the palliative care consultants and intensivists at our institution resulting in timelier decisions about life-sustaining treatment, may explain our positive results.33
Although the study was not powered or intended to show a decrease in ICU resources or costs, judging by TISS scores, reduction in intensive care support did not occur when the DNR goals were to withhold resuscitation. This is in contrast to previously published concerns that DNR orders may lead to a diminished level of care.34 In the retrospective cohort, a reduction in the use of resources (TISS) and costs of care was appreciated when the goals changed to CMO. However, a more substantial and significant reduction was seen with the proactive interventions of the palliative care consultants. This illustrates the usefulness of a palliative care perspective in assisting the ICU staff to recognize which interventions have lost their benefit when the context of care changes to a focus on comfort care only.
Interestingly, the increased presence of a proactive case finding approach not only increased utilization for the study protocol but also contributed to an increase in consultation about other patients with a poor prognosis who were not in the populations being studied. The increased presence in the ICU also contributes to bridging the educational gap of clinicians and sets grounds for incorporating palliative care into the critical care culture and curriculum.
Potential limitations to our study exist. Our sample is relatively small, temporal changes in a before/after study cannot be controlled, and it is a study conducted in a single institution with unique characteristics, such as the existence of an in-hospital palliative care program; therefore, our results may not be generalizable to other institutions.
In summary, our results suggest that a gap between what needs to be known and practiced, and what is currently demonstrated about end-of-life care in the ICU persists. Until this gap is bridged, the interventions of a proactive palliative care consultant will produce measurable improvements in patient care with regard to early identification of a poor prognosis, facilitation of changing treatment goals to comfort measures only, and implementation of palliative care interventions. These improvements result in a reduction in hospital and ICU length of stay, a reduction in the use of nonbeneficial resources with a concomitant savings in the cost of care.
| Footnotes |
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Received for publication November 9, 2001. Accepted for publication May 21, 2002.
| References |
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