Relationship of illness severity and length of stay to functional outcomes in the pediatric intensive care unit: a multi-institutional study

OBJECTIVE: The purpose of this study was to establish relationships between illness severity, length of stay, and functional outcomes in the pediatric intensive care unit (PICU) by using multi-institutional data. We hypothesized that a positive relationship exists between functional outcome scores, severity of illness, and length of stay. DESIGN: The study used a prospective multicentered inception cohort design. SETTING: The study was conducted in 16 PICUs across the United States that were member institutions of the Pediatric Critical Care Study Group of the Society of Critical Care Medicine. PATIENTS: In total, 11,106 patients were assessed, representing all admissions to these intensive care units for 12 consecutive months. MEASUREMENTS: Functional outcomes were measured by the Pediatric Overall Performance Category (POPC) and Pediatric Cerebral Performance Category (PCPC) scales. Both scales were assessed at baseline and discharge from the PICU. Delta scores were formed by subtracting baseline scores from discharge scores. Other measurements included admission Pediatric Risk of Mortality scores, age, operative status, length of stay in the PICU, and diagnoses. Interrater reliability was assessed by using a set of ten standardized cases on two occasions 6 months apart. MAIN RESULTS: Baseline, discharge, and delta POPC and PCPC outcome scores were associated with length of stay in the PICU and with predicted risk of mortality (p < .01). Incorporation of baseline functional status in multivariate length of stay analyses improved measured fit. Mild baseline cerebral deficits in children were associated with 18% longer PICU stays after controlling for other patient and institutional characteristics. Moderate and severe baseline deficits for both the POPC and PCPC score predict increased length of stay of between 30% and 40%. On the standardized cases, interrater consensus was achieved on 82% of scores with agreement to within one neighboring class for 99.7% of scores. CONCLUSIONS: These data establish current relationships for the POPC and PCPC outcome scales based on multi-institutional data. The reported relationships can be used as reference values for evaluating clinical programs or for clinical outcomes research.     

脓毒症/严重脓毒症患儿维生素D水平与预后

目的 了解儿童重症监护病房(pediatric intensive care unit,PICU)脓毒症/严重脓毒症患儿维生素D缺乏程度;分析患者入院时维生素D水平与预后之间的关系.方法 本研究为多中心、前瞻性、观察性研究.以2013年3月1日至2014年3月30日期间入住3家儿童医院PICU符合危重症标准的脓毒症/严重脓毒症患儿作为研究对象.入组患者入院24h内留取静脉血2 mL,采用酶联免疫法检测血清25 (OH)维生素D水平.根据维生素D水平,将患者分为维生素D充足、轻度维生素D缺乏和重度维生素D缺乏三组.分析入院时维生素D水平与PICU住院时间、总住院时间、出院病死率、28d病死率和经济费用之间的关系.结果 共纳入病例194例.其中男117例(60.3％),女77例(39.7％).脓毒症/严重脓毒症患分别为96例和98例.出院病死率和28 d病死率分别为6.7％和24.2％.入院时中位维生素D水平9.79 ng/mL (5.32,18.46) ng/mL,维生素D缺乏率77.8％ (151/194),其中重度维生素D缺乏率达50.5％ (98/194).入院时存在重度维生素D缺乏的患者出院病死率显著增加(P=0.011).维生素D水平与PICU住院时间、总住院时间和经济花费间没有进行相关分析.结论 PICU脓毒症/严重脓毒症儿童中维生素D缺乏率高达77.8％;重度维生素D缺乏患者,出院病死率更高.     

Early indicators of prolonged intensive care unit stay: impact of illness severity,physician staffing,and pre-intensive care unit length of stay

OBJECTIVE: Scoring systems that predict mortality do not necessarily predict prolonged length of stay or costs in the intensive care unit (ICU). Knowledge of characteristics predicting prolonged ICU stay would be helpful, particularly if some factors could be modified. Such factors might include process of care, including active involvement of full-time ICU physicians and length of hospital stay before ICU admission. DESIGN: Demographic data, clinical diagnosis at ICU admission, Simplified Acute Physiology Score, and organizational characteristics were examined by logistic regression for their effect on ICU and hospital length of stay and weighted hospital days (WHD), a proxy for high cost of care. SETTING: A total of 34 ICUs at 27 hospitals participating in Project IMPACT during 1998. PATIENTS: A total of 10,900 critically ill medical, surgical, and trauma patients qualifying for Simplified Acute Physiology Score assessment. INTERVENTIONS: None. RESULTS: Overall, 9.8% of patients had excess WHD, but the percentage varied by diagnosis. Factors predicting high WHD include Simplified Acute Physiology Score survival probability, age of 40 to 80 yrs, presence of infection or mechanical ventilation 24 hrs after admission, male sex, emergency surgery, trauma, presence of critical care fellows, and prolonged pre-ICU hospital stay. Mechanical ventilation at 24 hrs predicts high WHD across diagnostic categories, with a relative risk of between 2.4 and 12.9. Factors protecting against high WHD include do-not-resuscitate order at admission, presence of coma 24 hrs after admission, and active involvement of full-time ICU physicians. CONCLUSIONS: Patients with high WHD, and thus high costs, can be identified early. Severity of illness only partially explains high WHD. Age is less important as a predictor of high WHD than presence of infection or ventilator dependency at 24 hrs. Both long ward stays before ICU admission and lack of full-time ICU physician involvement in care increase the probability of long ICU stays. These latter two factors are potentially modifiable and deserve prospective study.     

Post-intensive care unit pediatric hospital stay and estimated costs

OBJECTIVE: For pediatric intensive care unit (ICU) survivors, to determine the proportion of hospital stay and estimated hospital costs accounted for by post-ICU care. DESIGN: Prospective study. SETTING: University teaching hospital. PATIENTS: Pediatric patients who survive an ICU admission. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Estimated relative daily costs were assumed as follows: ICU, with ventilator/ICU, not on ventilator/intermediate care unit/general pediatric hospital day, at 2:1:0.7:0.3, respectively. Estimated costs were expressed in arbitrary units as (number of days at each level of care) x (relative cost per day). The ICU phase was defined as the patient's first ICU admission only, and the post-ICU phase included intermediate care unit and general pediatric hospital days, as well as ICU readmission during the same hospitalization. Pre-ICU hospital activity was excluded from analysis. For 341 ICU survivors, post-ICU days (median, 4 days per patient) accounted for 62% of the total hospital stay. Post-ICU care accounted for one third of the total estimated hospital costs for ICU survivors. Patients with longer post-ICU stays could not be reliably identified at the time of ICU discharge according to their ICU length of stay, duration of mechanical ventilation in the ICU, age, ICU day 1 mortality probability, or diagnostic group (p>.05). CONCLUSIONS: Post-ICU care accounts for a substantial proportion of hospital stay and estimated costs for ICU survivors. These observations suggest that developing strategies to optimize hospital utilization at the time of ICU discharge may be important for controlling costs of recovery from critical illness.     

Mortality prediction models for pediatric intensive care: comparison of overall and subgroup specific performance

Aim

To validate paediatric index of mortality (PIM) and pediatric risk of mortality (PRISM) models within the overall population as well as in specific subgroups in pediatric intensive care units (PICUs).

Methods

Variants of PIM and PRISM prediction models were compared with respect to calibration (agreement between predicted risks and observed mortality) and discrimination (area under the receiver operating characteristic curve, AUC). We considered performance in the overall study population and in subgroups, defined by diagnoses, age and urgency at admission, and length of stay (LoS) at the PICU. We analyzed data from consecutive patients younger than 16 years admitted to the eight PICUs in the Netherlands between February 2006 and October 2009. Patients referred to another ICU or deceased within 2 h after admission were excluded.

Results

A total of 12,040 admissions were included, with 412 deaths. Variants of PIM2 were best calibrated. All models discriminated well, also in patients <28 days of age (neonates), with overall higher AUC for PRISM variants (PIM = 0.83, PIM2 = 0.85, PIM2-ANZ06 = 0.86, PIM2-ANZ08 = 0.85, PRISM = 0.88, PRISM3-24 = 0.90). Best discrimination for PRISM3-24 was confirmed in 13 out of 14 subgroup categories. After recalibration PRISM3-24 predicted accurately in most (12 out of 14) categories. Discrimination was poorer for all models (AUC < 0.73) after LoS of >6 days at the PICU.

Conclusion

All models discriminated well, also in most subgroups including neonates, but had difficulties predicting mortality for patients >6 days at the PICU. In a western European setting both the PIM2(-ANZ06) or a recalibrated version of PRISM3-24 are suited for overall individualized risk prediction.     

Mortality in very long-stay pediatric intensive care unit patients and incidence of withdrawal of treatment

Background

The mortality for children with prolonged stay in pediatric intensive care units (PICU) is much higher than overall mortality. The incidence of withdrawal or limitation of therapy in this group is unknown.

Purpose

To assess mortality and characteristics of children admitted for ≥28 days to our ICU, and to describe the extent to which limitations of care were involved in the terminal phase preceding death.

Methods

For the period 2003 to 2005 clinical data were collected retrospectively for children with prolonged stay (defined as ≥28 days) in a medical/surgical PICU of a university children’s hospital.

Results

In the PICU, 4.4% of the children (116/2,607, equal gender, mean age 29 days) had a prolonged stay. Median (range) stay was 56 (28–546) days. These children accounted for 3% of total admissions and occupied 63% of total admission days. Mortality during admission for this group was five times higher (22%) than the average PICU mortality rate of 4.6%. Withdrawal or limitation of therapy preceded 70% of deaths.

Conclusions

Children with prolonged stay in the PICU have a significantly high risk of mortality. Death is typically preceded by limitation of care.     

Psychiatric nurses' views on criteria for psychiatric intensive care: acute and intensive care staff compared

AIM: To explore and investigate differences between the views of qualified nurses working in psychiatric intensive care units (PICUs) and acute care wards on which patients are appropriate for PICU care. BACKGROUND: Previous research on the area of psychiatric intensive care highlights the great differences that exist in all aspects of service provision, from unit size and staffing levels to treatment approaches and physical environment. One of the most common areas of controversy is the type of client behaviour that warrants admission to the PICU. METHOD: Structured interviews of 100 qualified nursing staff (in the London area, England) working on either acute or PICU wards were used to gather data on appropriate and inappropriate referral to PICUs. Comments made during the course of the interviews were also collected and subjected to content analysis. FINDINGS: There was evidence to support the hypothesis that acute ward staff considered patients suitable for PICU care at a lower level of risk than PICU staff thought appropriate. In comparison to acute ward nurses, those working in PICUs attended to a broader range of factors when considering suitability for admission to PICU. Appropriate reasons for transfer fell into five groups: risk to others; risk of intentional harm to self; risk of unintentional harm to self; therapeutic benefit from the PICU environment; and legitimate acute ward care problem. Inappropriate reasons for transfer fell into four groups: low risk to others and/or self; illegitimate acute admission care problems; patient belongs elsewhere; policy issues. CONCLUSION: The study opens up a range of issues not previously studied in relation to the use of PICUs and the intricate relationship of this use with the available acute care wards and other services. These findings and their implications for the care of acute and disturbed psychiatric patients are discussed.     

The impact of eligibility for primary attendings and nurses on PICU length of stay

PurposeTo examine whether primary attendings and/or nurses impact pediatric intensive care unit (PICU) length of stay (LOS) in long-stay patients (LSP).Materials and methodsRetrospective observational cross-sectional study from 2012 to 2016 of 29,170 LSP (LOS ≥ 10 days) admitted to 64 PICUs that participated in the Virtual Pediatric Systems, LLC. Generalized linear mixed models were used to examine the association between being eligible for primary practices and LOS. Secondary outcomes of proportions of limitations and withdrawal of aggressive, life-sustaining interventions were also explored.ResultsAfter controlling for several factors, being eligible for primary nurses and for primary attendings and nurses were associated with significantly lower mean LOS (8.9% and 9.7% lower, respectively), compared to not being eligible for any primary practice. Being eligible for primary attendings was associated with significantly higher mean LOS (9.6% higher). When the primary attendings were used for larger proportions of LSP, the practice was associated with significantly lower mean LOS. Limitations and withdrawal of aggressive interventions were more common in LSPs cared for in PICUs that utilized primary attendings.ConclusionsThe findings of lower LOS in LSP who were eligible for primary practices should induce more rigorous research on the impact of these primary practices.     

Systemic candidiasis in intensive care units: a multicenter,matched-cohort study

OBJECTIVE: To determine the impact of systemic candidiasis on the mortality and length of hospital stay of intensive care unit (ICU) patients and the associated workload. DESIGN: Multicenter, retrospective, matched-cohort study. SETTING: Data were retrieved from a computerized database that prospectively collected clinical data submitted by 32 ICUs in the Paris, France area. PATIENTS: A total of 149 stays with systemic candidiasis, including 104 candidemia, on ICU admission were identified in a 3-year period (1995-1997) among 49,063 admissions (3 per 1,000 admission). A total of 121 cases were matched with patients with no evidence of systemic Candida infection during the hospitalization period under study (same ICU, date of ICU admission, age, sex, simplified acute physiology score (SAPS II), location of the patient before admission, type of admission). RESULTS: Patients with systemic candidiasis had longer ICU length of stays than controls (25 vs 10 d; P =.001) with a relative risk for death of 2.27 (95% confidence interval, 1.64-3.11; P =.001). There was no difference between patients with systemic candidiasis with or without positive blood culture. CONCLUSIONS: Systemic Candida infections increased mortality and morbidity in severely ill patients. Optimizing management of such infections is imperative.     

Intensive care unit survivors have fewer hospital readmissions and readmission days than other hospitalized patients in British Columbia

OBJECTIVE: Intensive care unit (ICU) patients who survive their hospital admission have a long-term survival that is similar to that of hospitalized patients who do not require ICU admission. The risk of future readmission to the hospital for these two patient groups is unknown. The objective of this study was to determine the association between ICU admission and number of readmissions to the hospital and number of readmission days. DESIGN: Cohort study for 3 yrs between 1994 and 1997. SETTING: All acute care hospitals in British Columbia, Canada. PATIENTS: A total of 23,859 patients admitted to the ICU and 40,052 patients admitted to the hospital but not the ICU (5% random sample of total). INTERVENTION: None. MEASUREMENTS AND MAIN RESULTS: We measured the number of readmissions to the hospital and the number of readmission days after discharge from the first admission to the hospital during the study period. For survivors to the end of the study period, patients who had been in the ICU had 0.66 readmissions per year and 5.29 readmission days per year compared with 0.73 readmissions per year and 5.48 readmission days per year for control subjects. After controlling for age, sex, socioeconomic status, number of previous ICU and hospital admissions, major clinical category during index admission, comorbidity score during index admission, length of hospital stay during index admission, size of index hospital, and period of follow-up, ICU admission was associated with fewer readmissions (survivors: rate ratio, 0.80; 95% confidence interval, 0.77-0.82; nonsurvivors: rate ratio, 0.85; 95%, confidence interval, 0.82-0.89) and readmission days (survivors: rate ratio, 0.91; 95% confidence interval, 0.87-0.95; nonsurvivors: rate ratio, 0.87; 95%, confidence interval, 0.81-0.92) than admission to the hospital but not the ICU. CONCLUSIONS: Survivors of a hospital stay that includes admission to an ICU have fewer hospital readmissions and readmission days after their discharge than do survivors of a hospital stay without intensive care.     

Intensive care unit length of stay: recent changes and future challenges

OBJECTIVE: To compare case-mix adjusted intensive care unit (ICU) length of stay for critically ill patients with a variety of medical and surgical diagnoses during a 5-yr interval. DESIGN: Nonrandomized cohort study. SETTING: A total of 42 ICUs at 40 US hospitals during 1988-1990 and 285 ICUs at 161 US hospitals during 1993-1996. PATIENTS: A total of 17,105 consecutive ICU admissions during 1988-1990 and 38,888 consecutive ICU admissions during 1993-1996. MEASUREMENTS AND MAIN RESULTS: We used patient demographic and clinical characteristics to compare observed and predicted ICU length of stay and hospital mortality. Outcomes for patients studied during 1993-1996 were predicted using multivariable models that were developed and cross-validated using the 1988-1990 database. The mean observed hospital length of stay decreased by 3 days (from 14.8 days during 1988-1990 to 11.8 days during 1993-1996), but the mean observed ICU length of stay remained similar (4.70 vs. 4.53 days). After adjusting for patient and institutional differences, the mean predicted 1993-1996 ICU stay was 4.64 days. Thus, the mean-adjusted ICU stay decreased by 0.11 days during this 5-yr interval (T-statistic, 4.35; p < .001). The adjusted mean ICU length of stay was not changed for patients with 49 (75%) of the 65 ICU admission diagnoses. In contrast, the mean observed hospital length of stay was significantly shorter for 47 (72%) of the 65 admission diagnoses, and no ICU admission diagnosis was associated with a longer hospital stay. Aggregate risk-adjusted hospital mortality during 1993-1996 (12.35%) was not significantly different during 1988-1990 (12.27%, p = .54). CONCLUSIONS: For patients admitted to ICUs, the pressures associated with a decrease in hospital length of stay do not seem to have influenced the duration of ICU stay. Because of the high cost of intensive care, reduction in ICU stay may become a target for future cost-cutting efforts.     

The core characteristics and nursing care activities in psychiatric intensive care units in Sweden

Internationally, research on psychiatric intensive care units (PICUs) commonly reports results from demographic studies such as criteria for admission, need for involuntary treatment, and the occurrence of violent behaviour. A few international studies describe the caring aspect of the PICUs based specifically on caregivers' experiences. The concept of PICU in Sweden is not clearly defined. The aim of this study is to describe the core characteristics of a PICU in Sweden and to describe the care activities provided for patients admitted to the PICUs. Critical incident technique was used as the research method. Eighteen caregivers at a PICU participated in the study by completing a semistructured questionnaire. In-depth interviews with three nurses and two assistant nurses also constitute the data. An analysis of the content identified four categories that characterize the core of PICU: the dramatic admission, protests and refusal of treatment, escalating behaviours, and temporarily coercive measure. Care activities for PICUs were also analysed and identified as controlling - establishing boundaries, protecting - warding off, supporting - giving intensive assistance, and structuring the environment. Finally, the discussion put focus on determining the intensive aspect of psychiatric care which has not been done in a Swedish perspective before. PICUs were interpreted as a level of care as it is composed by limited structures and closeness in care.     

Hypernatremia in the intensive care unit: an indicator of quality of care?

OBJECTIVE: To assess the frequency of hypernatremia in patients who were admitted to an intensive care unit (ICU) and to determine the correlation of hypernatremia with the clinical outcomes, durations of the patients' stays in the ICU, and other clinical variables. DESIGN: Retrospective survey. SETTING: University teaching hospital. PATIENTS: All patients (total, 389) who were admitted to the medical ICU of the department of internal medicine during 1 yr. MEASUREMENTS: The database of our hospital's mainframe computer was searched for sodium values > or = 150 mmol/L that were registered in the year 1995. These data were then matched with the registration numbers of all patients who were admitted to our medical ICU between January 1 and December 31, 1995. In this way, we identified all patients in whom hypernatremia was present at admission or those who developed hypernatremia in the course of their stay in our ICU. The prevalence and duration of hypernatremia (defined as a serum sodium concentration of > or = 150 mmol/L or more) were determined; the correlation of hypernatremia with clinical outcome, duration of ICU stay, Acute Physiology and Chronic Health Evaluation II scores, and other clinical variables were evaluated; and changes in fluid administration in response to hypernatremia and fluid regimens in the period preceding hypernatremia were examined. MAIN RESULTS: Of a total of 389 patients who were admitted in 1995, hypernatremia was present at admission in 34 patients (8.9%). The average duration of hypernatremia in these patients was 16.2 (range, 4-56) hrs. A total of 22 patients (5.7%) developed hypernatremia in the course of their stay in the ICU. The average duration of hypernatremia in this group was 34.7 (range, 4-89) hrs. Moderately elevated levels of sodium had been detected in most of these patients (n = 21) in the days before the development of severe hypernatremia; however, adjustments in fluid infusion aimed at preventing the occurrence of hypernatremia were either lacking (n = 7) or inadequate (n = 11). Hospital-acquired hypernatremia vs. hypernatremia present at admission to the ICU was associated with a higher mortality rate (32% vs. 20.3%, respectively; p < .01). CONCLUSIONS: Despite frequent measurement of sodium levels in patients in the ICU, hypernatremia is a relatively common occurrence. Initial treatment of hypernatremia is often inadequate, and sometimes treatment is delayed. The development of hypernatremia is associated with adverse outcomes for patients developing hypernatremia in the ICU. Hypernatremia could potentially be used as an indicator of quality of care in the medical ICU.     

The impact of prematurity: a perspective of pediatric intensive care units

OBJECTIVE: To evaluate the relative resource use of pediatric intensive care unit (PICU) patients who had been born prematurely. DESIGN: Nonconcurrent cohort study. SETTING: Consecutive admissions to 16 voluntary PICUs. PATIENTS: A total of 431 formerly premature patients (FPP) and 5,319 nonpremature patients. INTERVENTIONS: None METHODS: Patients with a history of prematurity and a prematurity-related complication or an anatomical deformity were compared for demographic and resource requirements to a group of non-premature patients by a bivariable logistic regression analysis that controlled for age as a co-morbid factor. RESULTS: Compared with other patients, FPP were younger (34.9 +/- 2.2 months vs. 72.4 +/- 1.0 months; p < .001), readmitted to the PICU more often during the same hospitalization (11.1% vs. 5.5%; p < .001), used more chronic technologies (ventilators, gastrostomy tubes, tracheostomy tubes, and parenteral nutrition; 30.3% vs. 5.6%; p < .001), and had longer lengths of stay (5.98 +/-0.59 days vs. 3.56 +/- 0.12 days; p = .004). FPP had significantly higher use of ventilators (45.5% vs. 35.0%; p < .007) and lower use of arterial catheters (27.8% vs. 35.9%, p = .006) and central venous catheters (16.9% vs. 20.9%, p = .026) than nonprematures. The need for other PICU resources, including vasopressors, were similar. CONCLUSIONS: FPP used more chronic and acute care resources than patients who were not prematurely born. Continued improvements in neonatal care will influence change in many aspects of the health care system. This will also affect the delivery of care to the current patient base of the PICU.     

Characteristics and outcomes for critically ill patients with prolonged intensive care unit stays

OBJECTIVE: Prolonged stay in the intensive care unit (ICU) is associated with high mortality, morbidity, and costs. Identifying those patients who are most likely to benefit from an extended ICU stay would be helpful in guiding clinical decisions. We sought to describe the characteristics and outcomes for a heterogeneous group of patients who required a prolonged ICU stay. DESIGN: Observational study. SETTING: Adult ICUs of three teaching and five community hospitals. PATIENTS: The study group comprised 5,881 patients consecutively admitted to the ICUs during a 10-month period. MEASUREMENTS AND MAIN RESULTS: A prolonged stay was defined as one >21 days at teaching hospitals and >10 days at community hospitals. For patients meeting the criteria of prolonged stay, Therapeutic Intervention Scoring System (TISS) score and Multiple Organ Dysfunction Score (MODS) were measured prospectively from days 10 and 21 in community and teaching hospitals, respectively, and retrospectively before this. Prolonged-stay patients represented 5.6% of ICU admissions and 39.7% of ICU bed-days. Compared with short-stay patients, they were significantly older and had higher admission Acute Physiology and Chronic Health Evaluation (APACHE) II scores (p < .01). ICU and hospital mortality for prolonged-stay patients were 24.4% and 35.2%, respectively, compared with 11% and 15.9% for short-stay patients (p < .001). Mean admission TISS and MODS scores for prolonged-stay patients were 30.8 (sd, 11.1) and 4.8 (sd, 3.3) respectively. For prolonged-stay patients the dominant reason for ICU care was multiple organ failure (37.8%), ventilator support (30.7%), or nonventilated single organ failure (31.5%). Hospital mortality was highest in the group with multiple organ failure (53%). CONCLUSIONS: We developed a method to broadly classify a heterogeneous population of prolonged-stay ICU patients on the basis of MODS and the ICU interventions received. Mortality among prolonged-stay patients was highest for those with multiple organ failure. Future research should evaluate whether the proposed classification system can be used to influence the delivery of ICU care.     

Characteristics and immediate outcome of childhood meningitis treated in the pediatric intensive care unit

Objective To describe patient characteristics, use of technology and mortality in children with meningitis admitted to the pediatric intensive care unit (PICU).Design Retrospective cohort study.Setting Fifteen US PICUs.Patients All admissions with a diagnosis of meningitis between 1995 and 2000 in the Pediatric Intensive Care Unit Evaluations (PICUEs) database.Measurements and results Of 559 patients with meningitis, 58% were male. The median age was 19 months and the median length of PICU stay was 2 days. The crude PICU mortality rate was 7%. Three hundred thirty-four (60%) patients had bacterial meningitis. Non-survivors had significantly higher Pediatric Risk of Mortality (PRISM) III scores and also constituted a larger proportion of the patients with bacterial meningitis, coma and shock upon PICU admission. The use of invasive devices was higher among non-survivors, patients with bacterial meningitis or those who were in coma or shock upon PICU admission. There was significant variation in the use of intracranial pressure (ICP) monitors by coma status and by institution. In multivariate analysis, patients had 1.26 higher odds of mortality for each unit increase in PRISM III score (odds ratio 1.26, 95% confidence interval: 1.19–1.34), while adjusting for other variables.Conclusion In a large cohort of children admitted to the PICU with meningitis, severity of illness, particularly the presence of shock or coma, was significantly associated with both the higher use of invasive medical devices and higher mortality. There was significant variation in the use of ICP monitors among the various PICUs without statistical association with survival.Presented, in part, at the 14^th Pediatric Critical Care Colloquium, San Diego, CA, USA, October 2002     

Admission patterns and outcomes in a paediatric intensive care unit in South Africa over a 25-year period (1971–1995)

Objective: To describe admission and outcome patterns of diseases managed at a paediatric intensive care unit (PICU) in a developing country between 1971 and 1995, in order to provide data which will assist in improving the management of diseases and the rational allocation of health resources. Method: This study is based on data collated from annual audits conducted by the head of the PICU, King Edward VIII Hospital, Durban, South Africa. This unit serves a childhood population of about 3–4 million aged from 0–12 years. Results: The proportion of children admitted to the ICU as a percentage of the general paediatric admission has increased from 1.5 % in 1971 to 7 % in 1995. During this period, 7580 children were admitted to the unit, an average of 303 cases per annum. The overall mortality rate was 35.44 % (range 29.9 to 45.4 %); over 90 % of the children admitted were intubated and 80 % required intermittent positive pressure ventilation. Common childhood vaccine preventable infections have declined substantially and have been replaced by HIV related syndromes, lower respiratory tract infections, metabolic disorders, septicaemia and hyaline membrane disease. The mean duration of ICU stay per survivor over the study period 1991–1995 was 13.891 days. Tetanus, septicaemia and HIV related diseases required the longest ICU stay per survivor ( > 20 days), while accidental injuries, neonatal apnoea and asthma required the shortest duration of ICU stay per survivor ( < 6 days); 23.9 % of all deaths occurred in the first 24 h. Conclusion: The profile of diseases in children admitted to this PICU has changed considerably over 25 years. Some of these changes can be attributed to the shift in emphasis to primary health care, especially higher vaccination coverage rates. Profitable utilisation of limited ICU facilities would probably be enhanced by the use of outcome measures such as mortality and mean number of ICU days of stay per survivor. Received: 28 October 1997 Final revision received: 27 June 1998 Accepted: 31 July 1998