The frequency of withdrawal from acute care is impacted by severe acute renal failure

Advance Care Planning, Shared Decision Making, and Serious Illness Conversations in Onconephrology

Advance care planning, shared decision making, and serious illness conversations are communication processes designed to promote patient-centered care. In onconephrology, patients face a series of complex medical decisions regarding their care at the intersection of oncology and nephrology. Clinicians who aim to ensure that patient preferences and values are integrated into treatment planning must work within a similarly complex care team comprising multiple disciplines. In this review, we describe key decision points in a patient's care trajectory, as well as guidance on how and when to engage in advance care planning, shared decision making, and serious illness discussions. Further research on these processes in the complex context of onconephrology is needed.

Biomarkers upon discontinuation of renal replacement therapy predict 60-day survival and renal recovery in critically ill patients with acute kidney injury

INTRODUCTION

There is no consensus on the specific indications for weaning critically ill patients with acute kidney injury (AKI) off renal replacement therapy (RRT). This study aimed to explore the prognostic value of several biomarkers measured upon discontinuation of RRT for their value in predicting 60-day survival and renal recovery in an effort to add knowledge to the decision-making process regarding RRT withdrawal.

METHODS

We prospectively enrolled 102 patients with AKI who required RRT from the intensive care unit. Serum osteopontin (sOPN), serum interleukin 6 (sIL-6), serum cystatin C (sCysC), sIL-18, serum neutrophil gelatinase-associated lipocalin and urinary IL-18 and urinary neutrophil gelatinase-associated lipocalin were measured upon discontinuation of RRT. Patients were followed up at 60 days for survival and renal recovery.

FINDINGS

Patients who survived showed lower levels of all serum and urinary biomarkers. Serum OPN (OR 1.029, 95% CI 1.013-1.047, P = 0.001), diabetes (OR 23.157, 95% CI 4.507-118.981, P < 0.001) and APACHE II score (OR 1.308, 95% CI 1.121-1.527, P = 0.001) were independent predictors of 60-day mortality. Patients whose sOPN values fell within the highest and middle tertiles showed 5.25- and 2.31-fold increased risks of mortality, respectively, compared with that of patients in the lowest tertile. The addition of sOPN to the clinical model resulted in significant net reclassification improvement of 0.453 (P = 0.026) and an integrated discriminative index of 0.155 (P = 0.032). Lower levels of sOPN and sIL-6 were associated with greater odds of 60-day survival (AUC 0.812 and 0.741). The AUC value for predicting survival reached its highest level when all biomarkers were combined with urine output (UO) and urinary and serum creatinine upon discontinuation of RRT (0.882). Lower sCysC performed as well as higher UO in predicting 60-day renal recovery with the greatest AUC of 0.743.

DISCUSSION

Upon discontinuation of RRT, serum and urinary biomarkers, particularly sOPN, may predict 60-day survival and renal recovery in critically ill patients with AKI. The serum levels of OPN, IL-6 and CysC may be useful when considering withdrawal of RRT on the basis of conventional indicators.

The effects of advance care planning on end-of-life care: a systematic review

BACKGROUND

Advance care planning is the process of discussing and recording patient preferences concerning goals of care for patients who may lose capacity or communication ability in the future. Advance care planning could potentially improve end-of-life care, but the methods/tools used are varied and of uncertain benefit. Outcome measures used in existing studies are highly variable.

AIM

To present an overview of studies on the effects of advance care planning and gain insight in the effectiveness of different types of advance care planning.

DESIGN

Systematic review.

DATA SOURCES

We systematically searched PubMed, EMBASE and PsycINFO databases for experimental and observational studies on the effects of advance care planning published in 2000-2012.

RESULTS

The search yielded 3571 papers, of which 113 were relevant for this review. For each study, the level of evidence was graded. Most studies were observational (95%), originated from the United States (81%) and were performed in hospitals (49%) or nursing homes (32%). Do-not-resuscitate orders (39%) and written advance directives (34%) were most often studied. Advance care planning was often found to decrease life-sustaining treatment, increase use of hospice and palliative care and prevent hospitalisation. Complex advance care planning interventions seem to increase compliance with patients' end-of-life wishes.

CONCLUSION

The effects of different types of advance care planning have been studied in various settings and populations using different outcome measures. There is evidence that advance care planning positively impacts the quality of end-of-life care. Complex advance care planning interventions may be more effective in meeting patients' preferences than written documents alone. More studies are needed with an experimental design, in different settings, including the community.

Variation in the use of renal replacement therapy in patients with septic shock: a substudy of the prospective multicenter observational FINNAKI study

Introduction

Indications for renal replacement therapy (RRT) have not been generally standardized and vary among intensive care units (ICUs). We aimed to assess the proportion, indications, and modality of RRT, as well as the association between the proportion of RRT use and 90-day mortality in patients with septic shock in Finnish adult ICUs.

Methods

We identified patients with septic shock from the prospective observational multicenter FINNAKI study conducted between 1 September 2011 and 1 February 2012. We divided the ICUs into high-RRT and low-RRT ICUs according to the median of the proportion of RRT-treated patients with septic shock. Differences in indications, and modality of RRT between ICU groups were assessed. Finally, we performed an adjusted logistic regression analysis to evaluate the possible association of the ICU group (high vs. low-RRT) with 90-day mortality.

Results

Of the 726 patients with septic shock, 131 (18.0%, 95% CI 15.2 to 20.9%) were treated with RRT. The proportion of RRT-treated patients varied from 3% up to 36% (median 19%) among ICUs. High-RRT ICUs included nine ICUs (354 patients) and low-RRT ICUs eight ICUs (372 patients). In the high-RRT ICUs patients with septic shock were older (P = 0.04), had more cardiovascular (P <0.001) and renal failures (P = 0.003) on the first day in the ICU, were more often mechanically ventilated, and received higher maximum doses of norepinephrine (0.25 μg/kg/min vs. 0.18 μg/kg/min, P <0.001) than in the low-RRT ICUs. No significant differences in indications for or modality of RRT existed between the ICU groups. The crude 90-day mortality rate for patients with septic shock was 36.2% (95% CI 31.1 to 41.3%) in the high-RRT ICUs compared to 33.9% (95% CI 29.0 to 38.8%) in the low-RRT ICUs, P = 0.5. In an adjusted logistic regression analysis the ICU group (high-RRT or low-RRT ICUs) was not associated with 90-day mortality.

Conclusions

Patients with septic shock in ICUs with a high proportion of RRT had more severe organ dysfunctions and received more organ-supportive treatments. Importantly, the ICU group (high-RRT or low-RRT group) was not associated with 90-day mortality.

Palliative medicine referral in patients undergoing continuous renal replacement therapy for acute kidney injury

BACKGROUND

Referral patterns for palliative medicine consultation (PMC) by intensivists for patients requiring continuous renal replacement therapy (CRRT) have not been studied.

METHODS

We retrospectively analyzed clinical data on patients who received CRRT in a tertiary referral center between 1999 and 2006 to determine timeliness and effectiveness of PMC referrals and mortality rate as a surrogate for safety among patients receiving CRRT for acute kidney injury.

RESULTS

Over one-fifth (21.1%) of the 230 CRRT patients studied were referred for PMC (n = 55). PMC was requested on average after median of 15 hospital and 13 intensive care unit (ICU) days. Multivariate regression analysis revealed no association between mortality risk and PMC. Total hospital length of stay for patients who died after PMC referral was 18.5 (95% CI = 15-25) days compared with 12.5 days (95% CI = 9-17) for patients who died without PMC referral. ICU care for patients who died and received PMC was longer than for patients with no PMC [11.5 (95% CI = 9-15) days vs. 7.0 (95% CI = 6-9) days, p < 0.01]. CRRT duration was longer for patients who died and received PMC referral than for those without PMC [5.5 (95% CI = 4-8) vs. 3.0 (95% CI = 3-4) days; p < 0.01].

CONCLUSIONS

PMC was safe, but referrals were delayed and ineffective in optimizing the utilization of intensive care in patients receiving CRRT. A proactive, "triggered" referral process will likely be necessary to improve timeliness of PMC and reduce duration of non-beneficial life-sustaining therapies.

A systematic review of factors influencing decision-making in adults living with chronic kidney disease

OBJECTIVE

To identify factors influencing patient involvement in decision-making in the context of chronic kidney disease (CKD) and effective interventions to support their decision-making needs.

METHODS

A systematic review included studies and decision support tools that involved: (1) adults with CKD, (2) studies published from 1998-2008; and (3) a focus on patient decision-making needs, and/or barriers and facilitators to shared decision-making. Studies were quality appraised.

RESULTS

Forty studies were appraised. These studies mainly focused on the decisions patients with CKD faced around the choice of renal replacement therapy and withholding/withdrawing dialysis. Moreover, studies typically focused on health care professional's provision of information about the decision rather than identifying decisional conflict and supporting patients in decision-making. No studies were found that identified the patient's point of view about factors that might influence or inhibit quality decision-making. Factors influencing CKD patient's participation in decision included: (1) interpersonal relationships; (2) preservation of current well being, normality and quality of life; (3) need for control; and (4) personal importance on benefits and risks. Of the four patient decision aids identified, none had been evaluated for effectiveness.

CONCLUSION

Patients with CKD face decisions that are likely to cause decisional conflict. Most studies focused on information needs related to renal replacement therapy and withdrawing or withholding dialysis. There was less focus on other decision-making needs in the context of those choices and across the trajectory of CKD. Although patient decision aids and implementation of shared decision-making have been evaluated in patients with other medical conditions, little is known about interventions to support patients with CKD making quality decisions.

PRACTICE IMPLICATIONS

Patients with CKD have decision-making needs across the trajectory of their illness. Although little is known about supporting patients with CKD decision-making, support could be provided with protocols and tools that have been developed for other chronic illness situations. Development of CKD-specific clinical practice guidelines that include decision support best practices could benefit CKD patients. Research priorities include development and evaluation of CKD focused decision support tools and processes.

Long-term outcomes of acute kidney injury

Acute kidney injury (AKI) is common in the intensive care unit and is associated with significant morbidity and mortality. Based on the RIFLE criteria, AKI occurs in up to 67% of patients in the intensive care unit (ICU), with approximately 4% of critically ill patients requiring renal replacement therapy (RRT). It is well known that this subset of AKI patients who require RRT have an in-hospital mortality rate exceeding 50%. However, long-term outcomes of survivors of AKI requiring RRT remain poorly described. Long-term mortality is greater in those patients who survived AKI when compared with critically ill patients without AKI. Long-term morbidity, renal and extrarenal, is a frequent and underappreciated complication of AKI. Among survivors of AKI at long-term follow-up (1-10 years), approximately 12.5% are dialysis dependent (wide range of 1%-64%, depending on the patient population) and 19% to 31% have chronic kidney disease. According to the United States Renal Data System, "acute tubular necrosis without recovery" as a cause of end-stage kidney disease increased from 1.2% in 1994 to 1998 to 1.7% in 1999 to 2003. The incidence will likely continue to rise with the aging population, increase in comorbidities, and expansion of intensive care unit capabilities. AKI is an underrecognized cause of chronic kidney disease (CKD) and patients who survive should be followed closely for new CKD and/or progression of underlying CKD.

Do-not-resuscitate orders in the critically ill patient--an observational study with special emphasis on withholding of renal replacement therapy

We examined the process, consequences and impact of writing a Do-Not-Resuscitate (DNR) order in a cohort of critically-ill ICU patients. Special emphasis was given to the DNR order including withholding renal replacement therapy. A DNR code was mainly written in the first week following ICU admission and more often given to medical, older and sicker patients. Patients never actively participated in the decision and in only half of the cases the DNR order was discussed with relatives. Mortality of all patients studied was 21% of whom 67% died with a DNR order. In our population, the final in-hospital mortality rate of DNR-coded patients was 100%, because the DNR status was ordered when the patients were already very sick. DNR-coded patients died after a longer mean length of ICU stay than patients without a code. Withholding renal replacement therapy was commonly added to the DNR order even if renal failure either was not present or never developed.

The long-term outcome after acute renal failure

PURPOSE OF REVIEW

Research priorities in critical care are increasingly focusing on long-term outcomes and prognosis for survivors of critical illness. This review will focus on long-term outcomes after acute renal failure.

RECENT FINDINGS

Few studies have described the long-term outcomes after acute renal failure. Rates of survival are variable and range from 46 to 74%, 55 to 73%, 57 to 65% and 65 to 70% at 90 days, 6 months, 1 year and 5 years, respectively. All of older age, co-morbid illness, illness severity, septic shock, and renal replacement therapy after cardiac surgery have been associated with reduced survival. Recovery to independence from renal replacement therapy is expected in 60-70% of survivors by 90 days. Health-related quality of life is generally good and perceived as acceptable. Survivors often experience difficulty with mobility and limitations in activities of daily living. Renal replacement therapy is costly and achieves marginal cost-effectiveness in terms of quality-adjusted survival for those with a higher probability of survival.

SUMMARY

The long-term survival after acute renal failure is poor. Yet, most survivors recover sufficient function to become independent from renal replacement therapy. While perceived health-related quality of life is good, survivors have a lower health-related quality of life compared with the general population. Further research is needed to explore the relationship between survival, markers of morbidity and costs after acute renal failure.

Peer mentoring: a culturally sensitive approach to end-of-life planning for long-term dialysis patients

BACKGROUND

This study is designed to explore the impact of peer mentoring on end-of-life decision making.

METHODS

A controlled randomized intervention study with 203 patients from 21 dialysis centers across Michigan explored the impact of peer mentors, dialysis patients trained to help other patients, on end-of-life planning.

RESULTS

Communicating information on advance directives (ADs) through peer mentoring significantly influenced the completion of ADs overall compared with distributing standard printed material or no specific designed intervention. However, the influence was most prominent among African Americans, not only increasing actual completion of ADs (P < 0.001) and comfort discussing ADs (P < 0.01), but also improving subjective well-being (P < 0.05) and anxiety (P < 0.05) during the study period. These effects of peer mentoring did not appear among white patients, although printed material on ADs decreased reported suicidal ideation (P < 0.05).

CONCLUSION

These results suggest the importance of addressing specific cultural factors in the process of AD education. Common practice assumes that printed materials are effective in educating patients about health care and decision making. However, peer mentoring, a relationship-centered person-to-person approach, may be more effective in some cultural groups because it partakes of oral, rather than written, traditions. Acknowledging cultural differences and tailoring our approach could be powerful in enhancing trust and participation and decreasing potential disparities in health care outcomes.