Development of a bedside tool to predict time to death after withdrawal of life-sustaining therapies in infants and children.

OBJECTIVES: To generate a preliminary bedside predictor of rapid time-to-death after withdrawal of support in children to help identify potential candidates for organ donation after circulatory death. DESIGN: Retrospective chart review. SETTING: Pediatric intensive care unit of an academic children's hospital. PATIENTS: All deaths in the pediatric intensive care unit from May 1996 to April 2007. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Among 1389 deaths, 634 patients underwent withdrawal of support and 518 with complete data regarding demographics, life-supportive therapies, and end-of-life circumstances were analyzed. Three hundred seventy-three (72%) patients died within 30 mins of withdrawal and 452 (87%) died within 60 mins. Using multiple logistic regression, significant predictors of death within 30 or 60 mins (typical cut-off times for organ donation) were identified and a predictor score was generated. Significant predictors included: age 1 month or younger; norepinephrine, epinephrine, or phenylephrine >0.2 µg/kg/min; extracorporeal membrane oxygenation; and positive end-expiratory pressure >10 cmH2O; and spontaneous ventilation. Possible scores for the 30-min predictor ranged from -17 to 67; a score ≤-9 predicted a 37% probability of death ≤ 30 mins, whereas a score ≥ 38 predicted an 85% probability of death within 30 mins. For the 60-min predictor, scores ranged from -21 to 38; score ≤-10 predicted a 59% probability of death within 60 mins and a score ≥ 16 predicted a 98% probability of death within 60 mins. CONCLUSIONS: This tool is a reasonable preliminary predictor for death within 30 or 60 mins after withdrawal of support in terminally ill or injured children and might assist in identifying potential pediatric candidates for donation after circulatory death, although prospective validation is required.

Withdrawal from multiple sedative agent therapy in an infant: is dexmedetomidine the cause or the cure?

OBJECTIVE: To report withdrawal symptoms experienced by an infant following the prolonged use of dexmedetomidine. DESIGN: Case report. SETTING: Pediatric intensive care unit at a freestanding tertiary care children's hospital. PATIENTS: One pediatric patient with respiratory failure following pertussis infection that required prolonged intubation and sedation. The patient required dexmedetomidine to maintain optimal sedation before ventilator weaning. Subsequent to receiving dexmedetomidine the patient developed withdrawal symptoms. CONCLUSION: In patients who fail to achieve adequate sedation with the use of traditional medications, dexmedetomidine is an adequate alternative. However, abrupt discontinuation of dexmedetomidine may result in withdrawal symptoms that may be avoided with a dexmedetomidine taper.

Improving Reliability to a Care Goal Rounding Template in the Pediatric Intensive Care Unit.

BACKGROUND: Effective pediatric intensive care requires addressing many important aspects of care delivery during morning rounds, often achieved using a rounding checklist. Our objective was to develop a care goal rounding template and then double the reliability of discussion of rounding topics during morning rounds without the use of a checklist. METHODS: The Institute for Healthcare Improvement Model for Improvement was used for this initiative. A care goal rounding template was established through discussions and consensus with pediatric intensive care unit (PICU) faculty. Rounds were audited in a blinded fashion over a 3-month period to obtain baseline data on rounding topic discussion. Three interventions were then trialed (plan, do, study, act cycles) over a 12-month period. Weekly reliability in rounding topic discussion was tracked. RESULTS: Baseline reliability with discussion of rounding topics was 36%. The first intervention included the use of a standardized progress note in the electronic health record, which contained topics and served to prompt the discussion on rounds. The second intervention was implementation of laminated cards provided to PICU fellows highlighting the elements of the care goal rounding template. The third intervention addressed a standardized handoff sheet often used during rounds. Mean reliability for discussion of rounding topics improved to 52% shortly following the second intervention. Reliability was sustained more than 1 year later. CONCLUSIONS: Following the establishment of a PICU care goal rounding template and various interventions, the reliability in discussing important care goal elements on patient rounds improved.

Inpatient bronchiolitis guideline implementation and resource utilization.

BACKGROUND: Provider-dependent practice variation in children hospitalized with bronchiolitis is not uncommon. Clinical practice guidelines (CPGs) can streamline practice and reduce utilization however, CPG implementation is complex. METHODS: A multidisciplinary team developed and implemented CPGs for management of bronchiolitis for children <2 years old. Children with comorbidities, ICU admissions, and outside hospital transfers were excluded. Implementation involved teamwork and collaboration, provider education, online access to CPGs, order sets, data sharing, and monthly team meetings. Resource utilization was defined as use of chest x-rays (CXRs), antibiotics, steroids, and more than 2 doses of inhaled bronchodilator use. Outcome metrics included length of stay (LOS) and readmission rate. Bronchiolitis season was defined as September to April. Data were collected for 2 seasons post implementation. RESULTS: The number CPG-eligible patients in the pre- and 2 postimplementation periods were similar (1244, preimplementation; 1159, postimplementation season 1; 1283 postimplementation season 2). CXRs decreased from 59.7% to 45.1% (P < .0001) in season 1 to 39% (P < .0001) in season 2. Bronchodilator use decreased from 27% to 20% (P < .01) in season 1 to 14% (P < .002) in season 2. Steroid use significantly reduced from 19% to 11% (P < .01). Antibiotic use did not change significantly (P = .16). LOS decreased from 2.3 to 1.8 days (P < .0001) in season 1 and 1.9 days (P < .05) in season 2. All-cause 7-day readmission rate did not change (P = .45). CONCLUSIONS: Bronchiolitis CPG implementation resulted in reduced use of CXRs, bronchodilators, steroids, and LOS without affecting 7-day all-cause readmissions.

Potential for liver and kidney donation after circulatory death in infants and children.

OBJECTIVE: To determine the potential effect of organ donation after circulatory death (DCD) on the number of kidney and liver donors in a PICU. PATIENTS AND METHODS: All deaths in the PICU of an academic, tertiary care children's hospital from May 1996 to April 2007 were retrospectively reviewed. Patient demographics, premortem physiology, and end-of-life circumstances were recorded and compared with basic criteria for potential organ donation. A sensitivity analysis was performed to examine the effect of more strict physiologic and time criteria as well as 3 different rates of consent for donation. RESULTS: There were 1389 deaths during 11 years; 634 children (46%) underwent withdrawal of life support, of whom 518 had complete data and were analyzed. There were 131 children (25% of those withdrawn, 9% of all deaths) who met basic physiologic and time criteria for organ donation (80 kidney; 107 liver). Consideration of consent rates in sensitivity analysis resulted in an estimated 24 to 85 organ donors, an increase of 28% to 99% over the 86 actual brain-dead donors during the same time period. Assuming historical rates of organ recovery, these DCD donors might have produced 30 to 88 additional kidneys and 8 to 56 additional livers, an increase of 21% to 60% in kidney donation and 13% to 80% in livers above the number of organs recovered from brain-dead donors. CONCLUSIONS: Although relatively few children may have been eligible for DCD, they might have increased the number of organ donors from our institution, depending greatly on consent rates. DCD merits additional discussion and exploration.

Effect of low-dose naloxone infusion on fentanyl requirements in critically ill children.

OBJECTIVE: Sedating critically ill patients often involves prolonged opioid infusions causing opioid tolerance. Naloxone has been hypothesized to limit opioid tolerance by decreasing adenylate cyclase/cyclic adenosine monophosphate activation. The study purpose was to investigate the effect of low-dose naloxone on the maximum cumulative daily fentanyl dose in critically ill children. METHODS: We conducted a double-blinded, randomized, placebo-control trial from December 2002 through July 2004 in a university PICU. We enrolled 82 children age 1 day to 18 years requiring mechanical ventilation and fentanyl infusions anticipated to last for >4 days were eligible for enrollment. Those receiving additional oral analgesia or sedation, having a history of drug dependence or withdrawal, or having significant neurologic, renal, or hepatic disease were excluded. In addition to fentanyl infusions, patients received low-dose naloxone or placebo infusions. Medications were adjusted using the Modified Motor Activity Assessment Scale. Withdrawal was monitored using the Modified Narcotic Withdrawal Scale. Intervention was a low-dose naloxone infusion (0.25 microg/kg per hour) and the main outcome variable was the maximum cumulative daily fentanyl dose (micrograms per kilogram per day). RESULTS: There was no difference in the maximum cumulative daily fentanyl dose between patients treated with naloxone (N = 37) or those receiving placebo (N = 35). Adjustment for the starting fentanyl dose also failed to reveal group differences. Total fentanyl dose received throughout the study in the naloxone group (360 microg/kg) versus placebo (223 microg/kg) was not statistically different. Placebo patients trended toward fewer rescue midazolam boluses (10.7 vs 17.8), lower total midazolam dose (11.6 mg/kg vs 23.9 mg/kg), and fewer rescue fentanyl boluses (18.5 vs 23.9). CONCLUSIONS: We conclude that administration of low-dose naloxone (0.25 microg/kg per hour) does not decrease fentanyl requirements in critically ill, mechanically ventilated children.