Ventilator-associated events in children: A multicentre prospective cohort study.

BACKGROUND: The Centres for Disease Control and Prevention (CDC) broadened the focus of surveillance from ventilator-associated pneumonia to ventilator-associated event (VAE) for quality purposes. No paediatric definition of VAE (PaedVAE) has been accurately validated. We aimed to analyse the incidence and impact on patient outcomes resulting from the application of the adult and two paediatric VAE (PaedVAE) criteria. SECONDARY OBJECTIVE: to evaluate VAE/PaedVAE as factors associated with increased duration of mechanical ventilation (MV) and Paediatric Intensive Care Unit (PICU) stay. METHODS: Multicentre observational prospective cohort study in 15 PICUs in Spain. VAEs were assessed using the 2013/2015 CDC classification. PaedVAE were assessed using the CDC definition based on mean airway pressure (MAP-PaedVAE) versus a paediatric definition based on positive end-expiratory pressure (PEEP-PaedVAE). Children who underwent MV ≥ 48 h were included. RESULTS: A total of 3626 ventilator-days in 391 patients were analysed. The incidence of VAE, MAP-PaedVAE and PEEP-PaedVAE was 8.55, 5.24 and 20.96 per 1000 ventilator-days, respectively. The median time [IQR] for VAE, MAP-PaedVAE and PEEP-PaedVAE development from the MV onset was 4 [3-12.5], 4 [3-14], and 5 [3-7.75] days, respectively. Among survivors, all three were associated with increased MV duration (> 7 days) and PICU stay (> 10 days) at univariate analysis. Multivariate analysis showed that PEEP-PaedVAE was the only definition independently associated with MV above 7 days [OR = 4.86, 95% CI (2.41-10.11)] and PICU stay [OR = 3.49, 95% CI (1.68-7.80)] above ten days, respectively. CONCLUSIONS: A VAE definition based on slight PEEP increases should be preferred for VAE surveillance in children.

Quality of life in home-ventilated children and their families.

HMV (home mechanical ventilation) in children has increased over the last years. The aim of the study was to assess perceived quality of life (QOL) of these children and their families as well as the problems they face in their daily life.We performed a multicentric cross-sectional study using a semi-structured interview about the impact of HMV on families and an evaluation questionnaire about perceived QOL by the patient and their families (pediatric quality of life questionnaire (PedsQL4.0)). We studied 41 subjects (mean age 8.2 years). Global scores in PedsQL questionnaire for subjects (median 61.4), and their parents (median 52.2) were below those of healthy children. 24.4% received medical follow-up at home and 71.8% attended school. Mothers were the main caregivers (75.6%), 48.8% of which were fully dedicated to the care of their child. 71.1% consider economic and healthcare resources insufficient. All families were satisfied with the care they provide to their children, even though it was considered emotionally overwhelming (65.9%). Marital conflict and neglect of siblings appeared in 42.1 and 36% of families, respectively. CONCLUSIONS: Perceived QOL by children with HMV and their families is lower than that of healthy children. Parents are happy to care for their children at home, even though it negatively affects family life. What is Known: • The use of home mechanical ventilation (HMV) in children has increased over the last years. • Normal family functioning is usually disrupted by HMV. What is New: • The aim of HMV is to provide a lifestyle similar to that of healthy children, but perceived quality of life by these patients and their parents is low. • Most of the families caring for children on HMV agree that support and resources provided by national health institutions is insufficient.

Infection in critically ill pediatric patients on continuous renal replacement therapy.

INTRODUCTION: Continuous renal replacement therapies (CRRT) are frequently used in critically ill children and may increase the risk of infection. However, the incidence, characteristics and prognosis of infection in critically ill children on CRRT have not been studied. METHODS: Data from a prospective, single-center register of critically ill children treated with CRRT was analyzed. RESULTS: 55 children (40% under 1 year of age) were treated with CRRT between June 2008 and January 2012; 43 patients (78.2%) presented 1 or more infections. The most common condition of patients requiring CRRT was heart disease (69%). Infection occurred a median of 11 days after the initiation of CRRT (IQ range: 4 to 21 days). A total of 21 patients (48.8 %) developed 1 infection, 7 (16.2%) developed 2 infections and 15 (34.9%) developed 3 or more infections. The most frequent infection was catheter-related bacteremia, with no differences in catheter location. CRRT duration longer than 4.5 days was the only risk factor for infection. Patients with infection had a longer length of stay (LOS) in the Pediatric Intensive Care Unit (PICU) than patients without it (37.8 vs. 17.6, p = 0.019), but there were no differences in mortality (30.2% vs. 33.3%; p = 0.84). CONCLUSIONS: Infection rate is high in critically ill children treated with CRRT. More than 4 days of CRRT increases the risk of infection. Infection in these patients entails a longer stay in the PICU but did not increase mortality.

Prognostic factors in pediatric sepsis study, from the Spanish Society of Pediatric Intensive Care.

BACKGROUND: Sepsis and septic shock represent up to 30% of admitted patients in pediatric intensive care units, with a mortality that can exceed 10%. The objective of this study is to determine the prognostic factors for mortality in sepsis. METHODS: Multicenter prospective descriptive study with patients (aged 7 days to 18 years) admitted to the pediatric intensive care units for sepsis, between January 2011 and April 2012. RESULTS: Data from 136 patients were collected. Eighty-seven were male (63.9%). The median age was a year and a half (P25-75 0.3-5.5 years). In 41 cases (30.1%), there were underlying diseases. The most common etiology was Neisseria meningitidis (31 cases, 22.8%) followed by Streptococcus pneumoniae (16 patients, 11.8%). Seventeen cases were fatal (12.5%). In the statistical analysis, the factors associated with mortality were nosocomial infection (P = 0.004), hypotension (P <0.001) and heart and kidney failure (P < 0.001 and P = 0.004, respectively). The numbers of leukocytes, neutrophils and platelets on admission were statistically lower in the group that died (P was 0.006, 0.013 and <0.001, respectively). Multivariate analysis showed that multiple organ failure, neutropenia, purpura or coagulopathy and nosocomial infection were independent risk factors for increased mortality (odds ratio: 17, 4.9, 9 and 9.2, respectively). CONCLUSIONS: Patients with sepsis and multiorgan failure, especially those with nosocomial infection or the presence of neutropenia or purpura, have a worse prognosis and should be monitored and treated early.

Nutritional status and clinical outcome of children on continuous renal replacement therapy: a prospective observational study.

BACKGROUND: No studies on continuous renal replacement therapy (CRRT) have analyzed nutritional status in children. The objective of this study was to assess the association between mortality and nutritional status of children receiving CRRT. METHODS: Prospective observational study to analyze the nutritional status of children receiving CRRT and its association with mortality. The variables recorded were age, weight, sex, diagnosis, albumin, creatinine, urea, uric acid, severity of illness scores, CRRT-related complications, duration of admission to the pediatric intensive care unit, and mortality. RESULTS: The sample comprised 174 critically ill children on CRRT. The median weight of the patients was 10 kg, 35% were under percentile (P) 3, and 56% had a weight/P50 ratio of less than 0.85. Only two patients were above P95. The mean age for patients under P3 was significantly lower than that of the other patients (p = 0.03). The incidence of weight under P3 was greater in younger children (p = 0.007) and in cardiac patients and in those who had previous chronic renal insufficiency (p = 0.047). The mortality analysis did not include patients with pre-existing renal disease. Mortality was 38.9%. Mortality for patients with weight < P3 was greater than that of children with weight > P3 (51% vs 33%; p = 0.037). In the univariate and multivariate logistic regression analyses, the only factor associated with mortality was protein-energy wasting (malnutrition) (OR, 2.11; 95% CI, 1.067-4.173; p = 0.032). CONCLUSIONS: The frequency of protein-energy wasting in children who require CRRT is high, and the frequency of obesity is low. Protein-energy wasting is more frequent in children with previous end-stage renal disease and heart disease. Underweight children present a higher mortality rate than patients with normal body weight.

Cardiac output and blood volume parameters using femoral arterial thermodilution.

BACKGROUND: The pulse-induced continuous cardiac output (PiCCO) system is a less invasive method than pulmonary thermodilution for the measurement of cardiac output and estimating blood volume parameters. The normal values in children have not been defined. The purpose of the present paper was therefore to evaluate cardiac output and parameters of blood volume using femoral arterial thermodilution in critically ill children. METHODS: A prospective study was performed in 17 critically ill children aged between 2 months and 14 years. Two measurements were taken for each determination of cardiac output, global end diastolic volume (GEDVI), intrathoracic blood volume index (ITBI), extravascular lung water index (ELWI), systolic volume index (SVI), stroke volume variation (SVV), cardiac function index (CFI), left ventricular contractility (dp/dt max), and the systemic vascular resistance index (SVRI). RESULTS: One hundred and seventeen measurements were performed. The mean cardiac index (CI) was 3.5 +/- 1.3 L/min per m(2). The GEDVI (399.7 +/- 349.1 mL/m(2)), ITBI (574.5 +/- 212.2 mL/m(2)) and dp/dt max (804.6 +/- 372.1 mmHg/s) were lower than reported in adults, whereas ELWI (18.9 +/- 9.3 mL/m2) and CFI (8 +/- 2.5 L/min) where higher. The GEDVI, SVI, dp/dt max and CI increased with the weight of the patients whereas the ELWI values decreased. CONCLUSIONS: Femoral arterial thermodilution is a suitable technique for the measurement of cardiac output in critically ill children. The intrathoracic and intracardiac volumes are lower than in adults, whereas extrapulmonary water is higher; these values are related to the weight of the patient.

Postpyloric enteral nutrition in the critically ill child with shock: a prospective observational study.

BACKGROUND: Tolerance to enteral nutrition in the critically ill child with shock has not been studied. The purpose of the study was to analyze the characteristics of enteral nutrition and its tolerance in the critically ill child with shock and to compare this with non-shocked patients. METHODS: A prospective, observational study was performed including critically ill children with shock who received postpyloric enteral nutrition (PEN). The type of nutrition used, its duration, tolerance, and gastrointestinal complications were assessed. The 65 children with shock who received PEN were compared with 461 non-shocked critically ill children who received PEN. RESULTS: Sixty-five critically ill children with shock, aged between 21 days and 22 years, received PEN. 75.4% of patients with shock received PEN exclusively. The mean duration of the PEN was 25.2 days and the maximum calorie intake was 79.4 kcal/kg/day. Twenty patients with shock (30.7%) presented gastrointestinal complications, 10 (15.4%) abdominal distension and/or excessive gastric residue, 13 (20%) diarrhoea, 1 necrotising enterocolitis, and 1 duodenal perforation due to the postpyloric tube. The frequency of gastrointestinal complications was significantly higher than in the other 461 critically ill children (9.1%). PEN was suspended due to gastrointestinal complications in 6 patients with shock (9.2%). There were 18 deaths among the patients with shock and PEN (27.7%). In only one patient was the death related to complications of the nutrition. CONCLUSION: Although most critically ill children with shock can tolerate postpyloric enteral nutrition, the incidence of gastrointestinal complications is higher in this group of patients than in other critically ill children.

Transpyloric enteral nutrition in the critically ill child with renal failure.

OBJECTIVE: To study the efficacy and tolerance of transpyloric enteral nutrition (TEN) in the critically ill child with acute renal failure (ARF). DESIGN: Prospective observational study. SETTING: Paediatric intensive care unit. PATIENTS: Critically ill children with ARF who received TEN were included in the study. They were compared with the remaining 473 critically ill children receiving TEN in this period. Tolerance of nutrition and gastrointestinal complications were assessed. INTERVENTION: Transpyloric enteral nutrition. MEASUREMENTS AND RESULTS: Fifty-three critically ill children with ARF aged between 3 days and 17 years received TEN. Children with ARF more frequently received parenteral nutrition before TEN (56.6%) than the other patients (17.5%). The incidence of shock, hepatic alterations and mortality was significantly higher in patients with ARF than in the remaining children. In children with ARF the mean duration of the TEN was 16.5-27.3 days and the maximum caloric intake was 77-26.7 kcal/kg/day. Thirteen patients (24.5%) presented gastrointestinal complications, 9 (17%) abdominal distension and/or excessive gastric residue, 5 (9.4%) diarrhoea, 1 necrotising enterocolitis and 1 duodenal perforation. The frequency of gastrointestinal complications was significantly higher in children with ARF. TEN was definitive suspended in five patients due to gastrointestinal complications. Four of these patients were treated with continuous renal replacement therapy. Thirty percent of patients died during TEN. In only one patient was the death related to complications of the nutrition. CONCLUSIONS: Critically ill children with ARF tolerate TEN, although the incidence of gastrointestinal complications is higher than in other critically ill children.

Transpyloric enteral feeding in the postoperative of cardiac surgery in children.

PURPOSE: The aim of this study is to assess the utility of transpyloric enteral nutrition in the postoperative period of cardiac surgery in children. METHODS: A prospective, observational study was performed on children receiving transpyloric enteral nutrition in the postoperative period of cardiac surgery. The type of nutrition, duration, tolerance, and complications were studied. RESULTS: Children (212) between the ages of 3 days and 17 years received transpyloric enteral nutrition in the postoperative period of cardiac surgery. The duration of the transpyloric feeding was 16 +/- 23.8 days, and the maximum calorie delivery was 85.1 +/- 25.7 kcal/kg/d. Tolerance to nutrition was good and was not affected by the infusion of vasoactive drugs, sedatives, or muscle relaxants. Of the study population, 14.6% presented with gastrointestinal complications, 9.4% with abdominal distension and/or excessive gastric residue, and 7.5% with diarrhea. Nutrition was withdrawn in 2.4% of the patients because of gastrointestinal complications. Mortality was not related to any characteristic of the nutrition or to gastrointestinal complications. CONCLUSIONS: Transpyloric enteral nutrition is useful and is a simple feeding method that enables a high calorie delivery to be provided with few complications in the postoperative period of cardiac surgery in children, including those receiving high doses of sedatives and muscle relaxants.

Severe ischemia of the lower limb and of the intestine associated with systemic vasoconstrictor therapy and femoral arterial catheterization.

OBJECTIVE: To report a case of peripheral and intestinal ischemia associated with arterial catheterization and terlipressin treatment in a child. DESIGN: Case report. SETTING: Pediatric intensive care unit of a university hospital. PATIENT: The patient was a 2-month-old female infant with shock refractory to treatment with catecholamines, who received treatment with terlipressin (20 microg/kg/4 hrs). In order to monitor her cardiac output, the right femoral artery was catheterized with a 4-Fr PiCCO catheter. At 60 hrs, the patient presented progressive ischemia of the right lower limb and intestinal ischemia. The ischemia did not improve despite withdrawal of the catheter and interruption of the terlipressin administration; it progressed to massive intestinal ischemia, and the patient died. CONCLUSIONS: Arterial catheterization combined with the administration of vasoconstrictor drugs, particularly vasopressin or terlipressin, can lead to local ischemic complications and severe intestinal ischemia in infants in shock.

Elevated carboxyhemoglobin associated with sodium nitroprusside treatment.

OBJECTIVE: To report four cases of carboxyhemoglobinemia associated with high doses of sodium nitroprusside after cardiac transplant in children. PATIENTS: Four children in the pediatric care unit of a university hospital aged 6 months-4 years. Carboxyhemoglonemia developed at levels of 5.5-7.7% in patients receiving high doses of sodium nitroprusside (7-16 microg/kg per minute and no other medication that could caused elevated carboxyhemoglobin). One patient died, and three recovered with no sequelae after discontinuation of sodium nitroprusside. CONCLUSIONS: High doses of sodium nitroprusside can induce carboxyhemoglobinemia in children after heart transplant, probably by inducing hemeoxygenase, with no other secondary effects.

Prognosis in critically ill children requiring continuous renal replacement therapy.

We performed an observational prospective study in 53 critically ill children to analyze the prognostic factors of children requiring continuous renal replacement therapy. Pediatric index of mortality (PIM), pediatric risk of mortality score (PRISM), multi-organ failure score, serum lactate levels, blood pressure, vasoactive drugs, renal function and characteristics of renal replacement therapy were analyzed. The mortality was 32.1%, with multi-organ failure being the most frequent cause of death (59%). The children who died presented a significantly lower blood pressure and required more doses of vasoactive drugs, dopamine and epinephrine than did the survivors. The PRISM and PIM scores and the serum lactate levels and the number of organs suffering failure were significantly higher in the patients who died than in the survivors. However, the PRISM and PIM scores underestimated the risk of mortality. The age, sex, urea and creatinine levels, type of pump and volume of ultrafiltrate did not affect the prognosis. The association of a mean BP<55 mmHg and epinephrine dose >0.6 mug/kg/min was predictive of mortality in 76% of the patients. We conclude that the prognosis in children requiring renal replacement therapy depends on the severity of the clinical state at the time of starting therapy, principally on the hemodynamic situation.