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Background:Infants with cyanotic congenital heart disease demonstrate wide fluctuations in hemoglobin (Hb), oxygen saturation, and cardiac output following palliation. Methemoglobin (Met-Hb), the product of Hb oxidation, may represent a compensatory mechanism during hypoxia and may be utilized as a biomarker.Methods:Arterial and venous Met-Hb levels were obtained from infants requiring palliation. The primary outcome was to describe the relationship between Met-Hb and other indices of tissue oxygenation (venous saturation, estimated arteriovenous oxygen difference [Est AV-Diff], and lactate). Secondary outcomes were to determine the impact of elevated Met-Hb levels ≥1.0% and the effect of red blood cell (RBC) transfusion on Met-Hb levels.Results:Fifty infants and 465 Met-Hb values were studied. Venous Met-Hb levels were significantly higher than arterial levels (venous: 0.84% ± 0.36% vs arterial: 0.45% ± 0.18%; P < .001). Venous Met-Hb demonstrated a significant inverse relationship with venous oxygen saturation ( R = −0.6; P < .001) and Hb ( R = −0.3, P < .001) and a direct relationship with the Est AV-Diff ( R = 0.3, P < .001). A total of 129 (29.6%) venous Met-Hb values were elevated (≥1.0%) and were associated with significantly lower Hb and venous saturation levels and higher Est AV-Diff and lactate levels. Methemoglobin levels decreased significantly following 65 RBC transfusions (0.94 ± 0.40 vs 0.77 ± 0.34; P < .001). Linear mixed models demonstrated that higher venous Met-Hb levels were associated with lower measures of tissue oxygenation and not related to any preoperative clinical differences.Conclusion:Methemoglobin may be a clinically useful marker of tissue oxygenation in infants following surgical palliation.

Background The optimal hemoglobin for infants after cardiac operation is unknown. Red blood cells (RBCs) are commonly transfused to maintain high hemoglobin concentrations in the absence of a clinical indication. We hypothesized that infants can be managed with a postoperative conservative RBC transfusion strategy, resulting in lower daily hemoglobin concentrations, without evidence of impaired oxygen delivery (ie, lactate, arteriovenous oxygen difference [avO 2 diff]), or adverse clinical outcomes. Methods Infants weighing 10 kg or less undergoing biventricular repair or palliative (nonseptated) operation were randomly assigned to either a postoperative conservative or liberal transfusion strategy. Conservative group strategy was RBC transfusion for a hemoglobin less than 7.0 g/dL for biventricular repairs or less than 9.0 g/dL for palliative procedures plus a clinical indication. Liberal group strategy was RBC transfusion for hemoglobin less than 9.5 g/dL for biventricular repairs or less than 12 g/dL for palliative procedures regardless of clinical indication. Results After the operation of 162 infants (82 conservative [53 biventricular, 29 palliative], 80 liberal [52 biventricular, 28 palliative]), including 12 Norwood procedures (6 conservative, 6 liberal), daily hemoglobin concentrations were significantly lower within the conservative group than the liberal group by postoperative day 1 and remained lower for more than 10 days. The percentage of patients requiring a RBC transfusion, number of transfusions, and volume of transfusions were all significantly lower within the conservative group. Despite lower hemoglobin concentrations within the conservative group, lactate, avO 2 diff, and clinical outcomes were similar. Conclusions Infants undergoing cardiac operation can be managed with a conservative RBC transfusion strategy. Clinical indications should help guide the decision for RBC transfusion even in this uniquely vulnerable population. Larger multicenter trials are needed to confirm these results, and focus on the highest risk patients would be of great interest.

Objective: To examine the impact of a restrictive vs. liberal transfusion strategy on arterial lactate and oxygen content differences in children with single-ventricle physiology post cavopulmonary connection. Children with single-ventricle physiology are routinely transfused postoperatively to increase systemic oxygen delivery, and transfusion thresholds in this population have not been studied. Design: Prospective, randomized, controlled, clinical trial. Setting: Pediatric cardiac intensive care unit in a teaching hospital. Patients: Infants and children (n 60) with variations of singleventricle physiology presenting for cavopulmonary connection. Interventions: Subjects were randomized to a restrictive (hemoglobin of 13.0 g/dL) transfusion strategy for 48 hrs post operation. Primary outcome measures were mean and peak arterial lactate. Secondary end points were arteriovenous (C(a-v)O2) and arteriocerebral oxygen content (C(a-c)O2) differences and clinical outcomes. Measurements and Main Results: A total of 30 children were in each group. There were no significant preoperative differences. Mean hemoglobin in the restrictive and liberal groups were 11 1.3 g/dL and 13.9 0.5 g/dL, respectively (p < .01). No differences in mean (1.4 0.5 mmol/L [Restrictive] vs. 1.4 0.4 mmol/L [Liberal]) or peak (3.1 1.5 mmol/L [Restrictive] vs. 3.2 1.3 mmol/L [Liberal]) lactate between groups were found. Mean number of red blood cell transfusions were 0.43 0.6 and 2.1 1.2 (p < .01), and donor exposure was 1.2 0.7 and 2.4 1.1 to (p < .01), for each group, respectively. No differences were found in C(a-v)O2, C(a-c)O2, or clinical outcome measures. Conclusion: Children with single-ventricle physiology do not benefit from a liberal transfusion strategy after cavopulmonary connection. A restrictive red blood cell transfusion strategy decreases the number of transfusions, donor exposures, and potential risks in these children. Larger studies with clinical outcome measures are needed to determine the transfusion threshold for children post cardiac repair or palliation for congenital heart disease. (Pediatr Crit Care Med 2011; 12: 39‐45)

Thrombotic events cause significant morbidity and mortality in children who undergo surgery for complex congenital cardiac disease. We prospectively evaluated the incidence of thrombosis and examined preoperative and postoperative laboratory tests of coagulation and inflammation in neonates experiencing initial surgical palliation for variations of single ventricle physiology.Neonates (30 days) requiring initial surgical palliation were studied. All subjects received aspirin from postoperative day 1 onward. Thromboses were diagnosed by serial transthoracic echocardiograms, vascular imaging, and interstage cardiac catheterizations according to predefined criteria.Twenty-two neonates, age 1 to 11 days (mean 4 +/- 2.5) were studied. Follow-up ranged from three hours to 18 months (median, 212 days). Eight infants died. Four of the 14 subjects who survived (28%), and one of the eight who died (12.5%), had evidence of thrombosis identified over a range of four hours to nine months postoperatively (median 14 days). When compared with reference values established in healthy children, preoperative subject hematocrit (Hct), platelet count, factors II, V, VII, VIII, and X, antithrombin, protein C, and soluble CD40 ligand measures were significantly lower, and the prothrombin time and partial thromboplastin time were significantly higher. Postoperative C reactive protein (CRP) was significantly higher, and Hct and platelet count significantly lower, than preoperative values. Thrombotic events were significantly related to high preoperative CRP (p = 0.02).Thrombotic complications occur frequently in neonates undergoing initial palliative surgery, suggesting that aspirin therapy alone may constitute inadequate protection. Elevated preoperative CRP appears to be associated with increased thrombotic risk.

Objective. Acute asphyxial asthma (AAA) is well described in adult patients and is characterized by a sudden onset that may rapidly progress to a near-arrest state. Despite the initial severity of AAA, mechanical ventilation often restores gas exchange promptly, resulting in shorter durations of ventilation. We believe that AAA can occur in children and can lead to respiratory failure that requires mechanical ventilation. Furthermore, children with rapid-onset respiratory failure that requires intubation in the emergency department (ED) are more likely to have AAA and a shorter duration of mechanical ventilation than those intubated in the pediatric intensive care unit (PICU).Methods. An 11-year retrospective chart review (1991-2002) was conducted of all children who were aged 2 through 18 years and had the primary diagnosis of status asthmaticus and required mechanical ventilation.Results. During the study period, 33 (11.4%) of 290 PICU admissions for status asthmaticus required mechanical ventilation. Thirteen children presented with rapid respiratory failure en route, on arrival, or within 30 minutes of arrival to the ED versus 20 children who progressed to respiratory failure later in their ED course or in the PICU. Mean duration of mechanical ventilation was significantly shorter in the children who presented with rapid respiratory failure versus those with progressive respiratory failure (29 ± 43 hours vs 88 ± 72 hours). Children with rapid respiratory failure had greater improvements in ventilation and oxygenation than those with progressive respiratory failure as measured by pre- and postintubation changes in arterial carbon dioxide pressure, arterial oxygen pressure/fraction of inspired oxygen ratio, and alveolar-arterial gradient. According to site of intubation, 23 children required intubation in the ED, whereas 10 were intubated later in the PICU. Mean duration of mechanical ventilation was significantly shorter in the ED group versus the PICU group (42 ± 63 hours vs 118 ± 46 hours). There were significantly greater improvements in ventilation and oxygenation in the ED group versus the PICU group as measured by pre- and postintubation changes in arterial carbon dioxide pressure and arterial oxygen pressure/fraction of inspired oxygen ratio.Conclusions. AAA occurs in children and shares characteristics seen in adult counterparts. Need for early intubation is a marker for AAA and may not represent a failure to maximize preintubation therapies. AAA represents a distinct form of life-threatening asthma and requires additional study in children.

Objective. Increasing numbers of children in the United States (ie, ∼200 children per 100 000 population) require intensive care annually, because of advances in pediatric therapeutic techniques and a changing spectrum of pediatric disease. These children are especially vulnerable to a multitude of short- and long-term negative emotional, behavioral, and academic outcomes, including a higher risk of posttraumatic stress disorder (PTSD) and a greater need for psychiatric treatment, compared with matched hospitalized children who do not require intensive care. In addition, the parents of these children are at risk for the development of PTSD, as well as other negative emotional outcomes (eg, depression and anxiety disorders). There has been little research conducted to systematically determine the effects of interventions aimed at improving psychosocial outcomes for critically ill children and their parents, despite recognition of the adverse effects of critical care hospitalization on the nonphysiologic well-being of patients and their families. The purpose of this study was to evaluate the effects of a preventive educational-behavioral intervention program, the Creating Opportunities for Parent Empowerment (COPE) program, initiated early in the intensive care unit hospitalization on the mental health/psychosocial outcomes of critically ill young children and their mothers. Design. A randomized, controlled trial with follow-up assessments 1, 3, 6, and 12 months after hospitalization was conducted with 174 mothers and their 2- to 7-year-old children who were unexpectedly hospitalized in the pediatric intensive care units (PICUs) of 2 children’s hospitals. The final sample of 163 mothers ranged in age from 18 to 52 years, with a mean of 31.2 years. Among the mothers reporting race/ethnicity, the sample included 116 white (71.2%), 33 African American (20.3%), 3 Hispanic (1.8%), and 2 Indian (1.2%) mothers. The mean age of the hospitalized children was 50.3 months. Ninety-nine children (60.7%) were male and 64 (39.3%) were female. The major reasons for hospitalization were respiratory problems, accidental trauma, neurologic problems, and infections. Fifty-seven percent (n = 93) of the children had never been hospitalized overnight, and none had experienced a previous PICU hospitalization. Interventions. Mothers in the experimental (COPE) group received a 3-phase educational-behavioral intervention program 1) 6 to 16 hours after PICU admission, 2) 2 to 16 hours after transfer to the general pediatric unit, and 3) 2 to 3 days after their children were discharged from the hospital. Control mothers received a structurally equivalent control program. The COPE intervention was based on self-regulation theory, control theory, and the emotional contagion hypothesis. The COPE program, which was delivered with audiotapes and matching written information, as well as a parent-child activity workbook that facilitated implementing the audiotaped information, focused on increasing 1) parents’ knowledge and understanding of the range of behaviors and emotions that young children typically display during and after hospitalization and 2) direct parent participation in their children’s emotional and physical care. The COPE workbook, which was provided to parents and children after transfer from the PICU to the general pediatric unit, contained 3 activities to be completed before discharge from the hospital, ie, 1) puppet play to encourage expression of emotions in a nonthreatening manner, 2) therapeutic medical play to assist children in obtaining some sense of mastery and control over the hospital experience, and 3) reading and discussing Jenny’s Wish, a story about a young child who successfully copes with a stressful hospitalization. Outcome Measures. Primary outcomes included maternal anxiety, negative mood state, depression, maternal beliefs, parental stress, and parent participation in their children’s care, as well as child adjustment, which was assessed with the Behavioral Assessment System for Children (parent form). Results. COPE mothers reported significantly less parental stress and participated more in their children’s physical and emotional care on the pediatric unit, compared with control mothers, as rated by nurses who were blinded with respect to study group. In comparison with control mothers, COPE mothers reported less negative mood state, less depression, and fewer PTSD symptoms at certain follow-up assessments after hospitalization. In addition, COPE mothers reported stronger beliefs regarding their children’s likely responses to hospitalization and how they could enhance their children’s adjustment, compared with control mothers. COPE children, in comparison with control children, exhibited significantly fewer withdrawal symptoms 6 months after discharge, as well as fewer negative behavioral symptoms and externalizing behaviors at 12 months. COPE mothers also reported less hyperactivity and greater adaptability among their children at 12 months, compared with control mothers. One year after discharge, a significantly higher percentage of control group children (25.9%) exhibited clinically significant behavioral symptoms, compared with COPE children (2.3%). In addition, 6 and 12 months after discharge, significantly higher percentages of control group children exhibited clinically significant externalizing symptoms (6 months, 14.3%; 12 months, 22.2%), compared with COPE children (6 months, 1.8%; 12 months, 4.5%). Conclusions. The findings of this study indicated that mothers who received the COPE program experienced improved maternal functional and emotional coping outcomes, which resulted in significantly fewer child adjustment problems, in comparison with the control group. With the increasing prevalence of attention-deficit/hyperactivity disorder and externalizing problems among children and the documented lack of mental health screening and early intervention services for children in this country, the COPE intervention could help protect this high-risk population of children from developing these troublesome problems. As a result, the mental health status of children after critical care hospitalization could be improved. With routine provision of the COPE program in PICUs throughout the country, family burdens and costs associated with the mental health treatment of these problems might be substantially reduced.

The purpose of this study was to pilot test the effects of a theoretically driven intervention program (COPE = Creating Opportunities for Parent Empowerment) on the coping outcomes of critically ill children and their mothers. Thirty mothers of 1- to 6-year-old children in a pediatric intensive care unit (PICU) were randomly assigned to receive COPE or a comparison program. Mothers who received the COPE program: (a) provided more support to their children during intrusive procedures; (b) provided more emotional support to their children; (c) reported less negative mood state and less parental stress related to their children's emotions and behaviors; and (d) reported fewer post-traumatic stress symptoms and less parental role change four weeks following hospitalization. Results indicate the need to educate parents regarding their children's responses as they recover from critical illness and how they can assist their children in coping with the stressful experience.

Children undergoing cardiac surgery with cardiopulmonary bypass are susceptible to additional inflammatory and immunogenic insults from blood transfusions. We hypothesize that washing red blood cells and platelets transfused to these patients will reduce postoperative transfusion-related immune modulation and inflammation.Prospective, randomized, controlled clinical trial.University hospital pediatric cardiac intensive care unit.Children from birth to 17 yrs undergoing cardiac surgery with cardiopulmonary bypass.Children were randomized to an unwashed or washed red blood cells and platelet transfusion protocol for their surgery and postoperative care. All blood was leuko-reduced, irradiated, and ABO identical. Plasma was obtained for laboratory analysis preoperatively, immediately, and 6 and 12 hrs after cardiopulmonary bypass. Primary outcome was the 12-hr postcardiopulmonary bypass interleukin-6-to-interleukin-10 ratio. Secondary measures were interleukin levels, C-reactive protein, and clinical outcomes.One hundred sixty-two subjects were studied, 81 per group. Thirty-four subjects (17 per group) did not receive any blood transfusions. Storage duration of blood products was similar between groups. Among transfused subjects, the 12-hr interleukin ratio was significantly lower in the washed group (3.8 vs. 4.8; p = .04) secondary to lower interleukin-6 levels (after cardiopulmonary bypass: 65 vs.100 pg/mL, p = .06; 6 hrs: 89 vs.152 pg/mL, p = .02; 12 hrs: 84 vs.122 pg/mL, p = .09). Postoperative C-reactive protein was lower in subjects receiving washed blood (38 vs. 43 mg/L; p = .03). There was a numerical, but not statistically significant, decrease in total blood product transfusions (203 vs. 260) and mortality (2 vs. 6 deaths) in the washed group compared to the unwashed group.Washed blood transfusions in cardiac surgery reduced inflammatory biomarkers, number of transfusions, donor exposures, and were associated with a nonsignificant trend toward reduced mortality. A larger study powered to test for clinical outcomes is needed to determine whether these laboratory findings are clinically significant.

Objective. To evaluate the change over time of attitudes about withdrawal of care from hopelessly ill children among a cohort of pediatric residents. Design. Prospective data collection via surveys. Setting. A pediatric residency program in a children's hospital. Subjects. Pediatric residents beginning training in 1987 and 1988; 29 residents completed the study. Interventions. Study participants completed a structured case-oriented questionnaire yearly from June 1988 through the completion of their residency training. The withholding of vasoactive agents or cardiopulmonary resuscitation, and the withdrawal of intravenous fluids, nutrition, or mechanical ventilation were the specific therapeutic options presented for a patient in a persistent vegetative state. The effects of time (further training) and parental wishes on resident decisions were assessed. Measurements and main results. No resident wanted to provide intensive care to a child in a persistent vegetative state who was in respiratory failure; all residents would withhold vasoactive agents and CPR from such a child. At the conclusion of training, most (97%) would withdraw mechanical ventilation. A minority would withdraw intravenous (IV) fluids (41%) or nutrition (35%). Residents became more willing to withdraw IV fluids from these patients (0/16 vs 6/16; P = .03) and to withhold or withdraw therapies in general (P = .03) over the course of their training. All of this change occurred over the first year of training. Parental wishes altered treatment plans for these patients significantly, both when parents desired additional treatment (P < .0001), and when parents wanted treatment stopped (P = .04). The residents' level of training had no effect on responses to parents' therapeutic requests. Conclusion. Although exposure to level of care issues occurs throughout pediatric residency training, almost all changes in trainees' attitudes occur during the first year. Efforts to promote effective learning and coping should be concentrated in this period.

Case Presentation A 2-year-old boy is brought to the emergency room by ambulance after being found "unresponsive" by his parents. He has been in good general health, has had no fever or other symptoms of infectious processes, has been taking no medications, and was "his normal self" until immediately prior to being found. Patients who are unresponsive and unarousable are in coma. The term altered consciousness represents the spectrum of abnormalities that exists between the immediate capability for normal wakefulness and true coma. For the purposes of this review, the two terms will be used interchangeably because their causes are similar and usually differ only in severity. Pathophysiology Two areas of the brain are responsible for consciousness: the ascending reticular activating system (ARAS) and the cerebral cortex. The ARAS is located in the brain stem from the level of the medulla to the level of the midbrain and sends multiple afferent neurons to the cortex. Disruption of this system can lead to disorders of consciousness. The cerebral cortex is the much more common site where dysfunction can cause coma. Any injury or illness that affects the cerebral cortex globally can cause coma or altered consciousness. Differential Diagnosis Altered consciousness in children can be caused by injuries or illnesses that affect the central nervous system directly or can be a manifestation of other systemic disease (Table 1).

Case Presentation A 2-year-old boy is brought to the emergency room by ambulance after being found "unresponsive" by his parents. He has been in good general health, has had no fever or other symptoms of infectious processes, has been taking no medications, and was "his normal self" until immediately prior to being found. Patients who are unresponsive and unarousable are in coma. The term altered consciousness represents the spectrum of abnormalities that exists between the immediate capability for normal wakefulness and true coma. For the purposes of this review, the two terms will be used interchangeably because their causes are similar and usually differ only in severity. Pathophysiology Two areas of the brain are responsible for consciousness: the ascending reticular activating system (ARAS) and the cerebral cortex. The ARAS is located in the brain stem from the level of the medulla to the level of the midbrain and sends multiple afferent neurons to the cortex. Disruption of this system can lead to disorders of consciousness. The cerebral cortex is the much more common site where dysfunction can cause coma. Any injury or illness that affects the cerebral cortex globally can cause coma or altered consciousness. Differential Diagnosis Altered consciousness in children can be caused by injuries or illnesses that affect the central nervous system directly or can be a manifestation of other systemic disease (Table 1).

The last 20 years have seen an explosion in our knowledge of the autonomic nervous system and our ability to manipulate its parasympathetic and sympathetic portions pharmacologically to achieve therapeutic goals. This article will briefly review the structure and function of the autonomic nervous system, with particular focus on the sympathetic branch. Included in the review is a discussion of the major receptors of the sympathetic system, concentrating on their intracellular mechanism of action, their effects on major target organ systems, and some commonly used pharmacologic agents that influence these organ systems through their actions on sympathetic receptors. Structure and Function of the System The autonomic (or involuntary) nervous system innervates the heart, visceral organs, blood vessels, smooth muscles, and glands. It can be divided functionally into the parasympathetic and sympathetic systems, which have opposing functions. All autonomic nerve pathways consist of two nerves in sequence. Presynaptic nerves begin in the central nervous system and transmit impulses to the postsynaptic nerves. Postsynaptic nerves then carry impulses to the effector organ. Actions of the parasympathetic nervous system include bradycardia, vasodilation in skeletal muscle and skin, contraction of bronchial smooth muscle, increased gastrointestinal motility, pupillary miosis, and contraction of the bladder detrusor coupled with relaxation of the bladder trigone (necessary for spontaneous voiding).

The autonomic nervous system, with its normal balance between sympathetic and parasympathetic effects, is responsible for control of the body's involuntary functions. The importance of this balance is shown by the severe physiologic derangements seen after cervical spine injury, when the absolute loss of sympathetic function leads to unopposed action of the parasympathetic system that causes bradycardia, vasodilation, and hypotension that can be life-threatening. The sympathetic nervous system controls a multiplicity of functions and can be manipulated pharmacologically to the pediatric patient's advantage in some disease states. A basic understanding of the actions of the available sympathetic receptor agonists and antagonists can simplify and clarify many of these therapeutic options and improve the care of these children.

OBJECTIVES To evaluate both the frequency and route of endotracheal colonization of intubated children by pathogens and to assess the usefulness of Pediatric Risk of Mortality scoring and measurement of gastric pH in predicting this colonization. DESIGN Prospective data collection. SETTING A multidisciplinary pediatric ICU. PATIENTS Nineteen children with medical/surgical problems who were intubated for at least 4 days. INTERVENTIONS Buccal mucosa, and endotracheal and gastric aspirates were cultured for pathogens immediately after endotracheal intubation and daily for 4 to 5 days. Pediatric Risk of Mortality scores were calculated at the time of endotracheal intubation; gastric pH was measured each time that the cultures were obtained. MEASUREMENTS AND MAIN RESULTS The buccal mucosae of ten (53%) of 19 children were colonized with Candida species at the time of endotracheal intubation. This colonization correlated with the degree of physiologic instability as measured by Pediatric Risk of Mortality scores (12.9 +/- 2.8 SEM for those patients colonized vs. 4.9 +/- 1.0 for those patients not colonized; p = .01), but not with preintubation antibiotic therapy. Eleven (58%) children acquired 27 endotracheal pathogens after the day of intubation. The buccal mucosa was the initial site of colonization of 19 (70%) of 27 of the acquired pathogens. A gastric pH of > 3.0 at the time of intubation correctly predicted colonization in nine of 11 children (p 8 at the time of endotracheal intubation correctly predicted colonization in eight of 11 patients (p < .05, Fisher's exact test). CONCLUSIONS Colonization of the buccal mucosa appears to be the crucial antecedent to endotracheal colonization in children. In children, gastric pH and Pediatric Risk of Mortality scores at the time of endotracheal intubation can predict pathogenic endotracheal colonization within 4 days of intubation. Selective decontamination regimes may be appropriate for these patients, especially those regimes that are directed to the buccal mucosa.

Interhospital transport of children must not be undertaken in a vacuum. Basic medical ethics and federal laws demand that there be some responsibility in providing adequate care during the transport process, and that this care meets or exceeds the level provided by the referring hospital. The care provided must also be appropriate to the severity of illness of the transported children. National guidelines and standards are needed to establish and coordinate a uniform interhospital transport process for critically ill children.

Objective. To determine whether the bispectral index (BIS) monitor could be used to guide physicians in titrating propofol to an effective safe level of deep sedation for children undergoing painful medical procedures.Design. Multiphase clinical trial.Setting. Outpatient treatment center of a university children's hospital.Patients. Pediatric outpatients undergoing painful medical procedures.Interventions. Patients were sedated with propofol for the procedures. Patients were monitored with a BIS monitor, and the BIS score was correlated with the patient's clinical level of sedation. The BIS score was then used as a guide to titrate propofol in the last phase of the study.Measurements and Main Results. The study consisted of 3 phases. In a chart review of data for 154 children who underwent 212 procedures, propofol was found to be safe and effective, with consistent dosing among the intensivists administering the medication. The children received a mean bolus dose of propofol of 1.56 mg/kg, with a mean total dose of propofol of 0.33 mg/kg per minute for the duration of the procedure. In the second phase, 21 patients ranging in age from 27 weeks to 18 years, with normal neurologic function, were sedated with propofol. An observer who was blinded to the BIS scores recorded clinical levels of sedation and reactivity (with a modified Ramsay scale and reactivity score) every 1 to 3 minutes. Another observer recorded the BIS scores at the same times. A total of 275 data points were collected and evaluated. All data points from the times at which patients were considered to be sedated adequately were used to construct a normal distribution of BIS scores. The mean BIS score was 62. This distribution was used to predict that a maximal BIS score of 47 was needed to ensure adequate sedation for 90% of the population. In the third phase of the study, an algorithm was devised to determine the target BIS score necessary for adequate sedation of 95% of the patients. We chose an initial BIS score of 50 (at which 85% of the patients in phase 2 were sedated) because of the possibility of data from phase 2 being skewed toward oversedation. Propofol was administered by an intensivist in an attempt to maintain the target BIS score. A blinded observer noted the patient's clinical level of sedation. In this group, there were 2 failures, ie, patients were clinically uncomfortable despite a BIS score of ≤50, representing only 90% success. Therefore, with the algorithm, propofol was titrated to sedate the next patients to a BIS score of 45. These patients required a mean bolus dose of 1.47 mg/kg and a mean total dose of 0.51 mg/kg per minute to maintain a BIS score of 45. They awakened in 12.75 minutes. All patients were sedated adequately, all procedures were successful, and no patients experienced complications from the sedation. To eliminate variability in the way propofol was dosed, the next 10 patients were given propofol according to a standardized protocol. These 10 children received an initial bolus of 1 mg/kg, with incremental bolus doses of 0.5 mg/kg per dose (maximum: 20 mg) to achieve and to maintain a BIS score of 45. With this protocol, all patients were sedated adequately and none experienced complications from the sedation. The patients required a mean bolus dose of 2.23 mg/kg and a mean dose of 0.52 mg/kg per minute to maintain a BIS score of 45. The mean time until awakening was 14.9 minutes. Regarding the total dose over time and the time until awakening, there was no statistical significance between this group and the group sedated to a BIS score of 45 without the dosing protocol.Conclusion. The BIS monitor can be a useful monitoring guide for the titration of propofol by physicians who are competent in airway and hemodynamic management, to achieve deep sedation for children undergoing painful procedures.

We describe two patients with acute myocarditis temporally associated with an acute Shigella sonnei gastroenteritis. This association has not been described in children and should be considered in children with shigellosis who do not respond to rehydration therapies.

As part of the overall quality assurance program for the Department of Pediatrics, we determined whether there were differences in the rates of unexpected autopsy findings between pediatric intensive care unit (ICU), emergency department, and ward patients.Prospective, descriptive study.Tertiary care children's hospital.Pediatric deaths (n = 212).None.Autopsies were obtained more frequently in emergency department patients (27/29 [93%]) compared with pediatric ICU (88/121 [73%] and ward (42/62 [68%]) patients (p = .03). The medical examiner's cases were more frequently from emergency department patients (22/27 [81%]) compared with pediatric ICU (39/88 [44%]) or ward (11/42 [26%]) patients (p.001). We found unexpected autopsy findings in 19 (12%) of 157 patients. There were no unexpected findings from the medical examiner's cases. The most common unexpected findings were unidentified infections (n = 7 [three fungal, three viral, and one nonspecific]) and unrecognized cardiac malformations (n = 4). Unexpected findings occurred more frequently in pediatric ICU patients (16/88 [18%]) vs. emergency department (2/27 [7%]) or ward (1/42 [2%]) patients (p = .03). The occurrence rates of major unexpected findings (Class I and II) in pediatric ICU (7/79 [9%]), emergency department (2/27 [7%]), and ward (1/42 [2%]) patients were similar (p = .4). There were two Goldman's Class I unexpected findings in the pediatric ICU and emergency department patients, and one Goldman's Class I unexpected finding in the ward patients.Autopsies were performed more frequently in emergency department patients. Class I through IV unexpected findings occurred more frequently in pediatric ICU patients compared with emergency department or ward patients. Autopsy examinations are an especially valuable diagnostic tool for pediatric ICU patients and physicians.

OBJECTIVES To evaluate the quality of objective information obtained during telephone requests for the transport of pediatric patients. To evaluate the ability of subjective judgment, the Pediatric Risk of Mortality (PRISM) score, and the presence of tachycardia for age to predict the need for a physician on as a member of the pediatric transport team. DESIGN Prospective data collection. SETTING The pediatric transport program of a children's hospital. PATIENTS All 129 infants and children transported over a 4-month period. MEASUREMENTS AND MAIN RESULTS We defined an objective measure of the need for a physician's presence during the transport of a pediatric patient, based on either the necessity for procedural or medical interventions during the time of transport or on direct admission to the pediatric ICU after transport. At the time of initial telephone contact, a physician's subjective opinion of the need for physician presence was recorded, a PRISM score was derived, and the presence of tachycardia (adjusted for age) was determined. Subsequently, the vital signs recorded on the record of this request were compared with those vital signs charted at the referring hospital at the time of the initial telephone request. A total of 96% of vital signs obtained during the initial telephone contact were consistent with those percentages in the referring hospital medical records. Fifty (39%) of 129 transported patients required procedural or medical interventions or pediatric ICU admission. Subjective judgments predicted physician need with a high sensitivity (0.98), but with a low specificity (0.18). PRISM score predicted 62 (48%) of 129 transports to be "physician-required" (sensitivity = 0.72; specificity = 0.67). There was no statistical association between tachycardia for age and the objective need for a physician's presence. CONCLUSIONS Objective information obtained during request for transfer was reliable. At the time of request for transfer, subjective judgment, PRISM score, and the presence of tachycardia did not predict the need for a physician presence during transport.

• Retreats during residency training have evolved as an escape from the daily routine. Recognizing that the retreat format could also be used as a foundation for program design and personal development, we have designed annual retreats for each of the 3 years of pediatric residency training. The sessions vary in length and agenda, but serve as the basis for an ongoing effort fostering growth and maturation of the department and its component participants. The effectiveness of the program (and the morale of the residents) is greatly influenced by this program. ( AJDC . 1991;145:1191-1194)

Objectives To determine if allowing 1 or both parents to be present during invasive procedures reduces the anxiety that parents experience while their child is in the pediatric intensive care unit; to evaluate if the parent's presence was helpful to the child and parent; and to determine whether this presence was harmful to the nurses or physicians. Design A prospective study using surveys (5-point Likert scale) of parents of children requiring intubation, placement of central lines, or chest tubes. Additional surveys were completed by bedside nurses to evaluate the effects of parental presence. Setting A 12-bed pediatric intensive care unit in upstate New York. Participants The study population consisted of the parents of 16 children undergoing 1 or more procedures; 7 had undergone intubation, 11 had central lines placed, and 2 had chest tubes placed. The control population consisted of the parents of 7 children undergoing 1 or more procedures; 7 had undergone intubation, 5 had central lines placed, and 3 had chest tubes placed. Results Parental presence significantly reduced the parental anxiety related to the procedure (P=.005; Mann-Whitney test), but did not change condition-related anxiety (P=0.9; Mann-Whitney test). Thirteen of 16 parents found their presence helpful to themselves (10 very, 3 somewhat) and the medical staff (11 very); 14 of 16 found their presence helpful to their child (11 very). Fifteen (94%) of 16 parents would repeat their choice to watch. Fifteen (94%) of 16 nurses found parents' presence helpful to the child (9 very) and to the parents (10 very). One nurse found a parent's presence somewhat harmful to nurses and very harmful to the parent. Thirteen (72%) of 18 nurses indicated that allowing parents to observe procedures was an appropriate policy. There were no significant differences noted in response of nurses based on years of experience. Conclusions Allowing parental presence during procedures decreases procedure-related anxiety. The implications of such a policy change on physicians and other aspects of pediatric intensive care, including medical education, need further evaluation.

The strategies for monitoring infants and children in the intensive care setting differ from the strategies used to monitor adults. This article highlights the physiologic differences between infants and children and adults that affect these methods. The technical aspects of monitoring infants and children are also discussed.

THE NUMBER of white blood cells normally present in cerebrospinal fluid after a nontraumatic lumbar puncture has been clearly established? ~2 Although the "normal" number of WBCs in CSF contaminated with blood has not been studied systematically, suggested definitions for normal values include a comparable WBC/RBC ratio in CSF and in peripheral blood ~ or the use of an arbitrary WBC/RBC ratio of 1:300. 4 Both of these definitions imply that when CSF is contaminated with blood there exists a fixed relationship between the number of RBCs and WBCs in CSF and peripheral blood, in the absence of preexisting CSF pleocytosis. Two recent analyses of blood-stained CSF specimens obtained from a small number of patients without meningitis demonstrated fewer WBCs than expected from calculation of the peripheral blood WBC/RBC ratio. ~,6 This observation suggests that current definitions might well obscure the detection of true CSF pleocytosis in such specimens, The purpose of our study was to analyze a larger number of blood-contaminated CSF samples in order to define better the relationship between the number of WBCs present and the expected number calculated from peripheral blood RBC and WBC counts. METHODS We performed a retrospective analysis of the CSF data of all patients at The Children's Memorial Hospital during 1983 whose CSF samples contained > 1000 RBC/mm 3 and in whom a complete blood count was performed simultaneously with or within 2 hours of lumbar puncture. CSF cell counts were done routinely using the standard counting chamber and acetic acid lysis technique described by Hepler. 7 CSF samples obtained by a neurosurgical procedure or with positive bacteriologic culture not judged to be a contaminant were excluded. Because it had been suggest

Communication is the essence of the process of psychotherapy. Understanding the parameters of communication conform the foundations for the development of psychotherapeutic skills in the student therapist. Using learning objectives within the context of teaching psychotherapy, the process of communication in individual psychotherapy is explored in this paper. With the aim of offering a practical framework to assist in the analysis of the communication process involved in individual psychotherapy, the following concepts are first examined: 1) channels of communication; 2) modes of functioning; 3) interaction between channels of communication and modes of functioning. Following this exploration, the learning objectives in communication are discussed. Using clinical examples, the relationship between the communication process and other concepts of individual psychotherapy are illustrated. Finally, some pedagogic reasons for teaching students the analysis of the communication process early in their psychotherapy training are presented.