Retrospective cohort study of all deaths among infants born between 22 and 27 completed weeks of gestation in Switzerland over a 3-year period.

OBJECTIVES: The aim of this research is to assess causes and circumstances of deaths in extremely low gestational age neonates (ELGANs) born in Switzerland over a 3-year period. DESIGN: Population-based, retrospective cohort study. SETTING: All nine level III perinatal centres (neonatal intensive care units (NICUs) and affiliated obstetrical services) in Switzerland. PATIENTS: ELGANs with a gestational age (GA) <28 weeks who died between 1 July 2012 and 30 June 2015. RESULTS: A total of 594 deaths were recorded with 280 (47%) stillbirths and 314 (53%) deaths after live birth. Of the latter, 185 (59%) occurred in the delivery room and 129 (41%) following admission to an NICU. Most liveborn infants dying in the delivery room had a GA ≤24 weeks and died following primary non-intervention. In contrast, NICU deaths occurred following unrestricted life support regardless of GA. End-of-life decision-making and redirection of care were based on medical futility and anticipated poor quality of life in 69% and 28% of patients, respectively. Most infants were extubated before death (87%). CONCLUSIONS: In Switzerland, most deaths among infants born at less than 24 weeks of gestation occurred in the delivery room. In contrast, most deaths of ELGANs with a GA ≥24 weeks were observed following unrestricted provisional intensive care, end-of-life decision-making and redirection of care in the NICU regardless of the degree of immaturity.

Limit of viability: The Swiss experience.

Progress made in the field of perinatology over the past four decades has led to unprecedented low mortality rates for extremely low birth weight infants. However, because rates of important short-term complications and neurodevelopmental impairment among survivors have remained high, the best approach to borderline viable infants continues to be debated. Not surprisingly, guidelines from various national medical societies for the care of infants born at the limit of viability vary considerably. In 2002, the first Swiss recommendations for the care of borderline viable infants were published. They had been developed by a multidisciplinary team of experts from the fields of obstetrics, pediatrics, and neonatology. Despite the availability of national guidelines, center-to-center outcome variability has since persisted, suggesting that care for the most immature infants is not only evidence-based and guideline-driven but also strongly influenced by local neonatal intensive care unit (NICU) culture. In 2011, revised national recommendations for perinatal care at the limit of viability between 22 and 26 completed weeks of gestation were published. It remains to be seen whether this has led to more uniform outcomes across the Swiss centers in the years that followed.

[Learning from a critical incident reporting system in the pediatric intensive care unit]. / Lernen aus einem Fehlermeldesystem in der Kinderintensivstation.

BACKGROUND: To record and analyze critical incidents is of paramount importance for any organization dedicated to improving patient safety. Therefore, many hospitals have implemented a critical incident reporting system (CIRS). However, the impact, benefits and use of such CIRS systems on patient safety have often been reported to be unsatisfactory. AIM: What have we learned over the past decade about the effective and optimal use of a CIRS? MATERIAL AND METHODS: Following the Yorkshire contributory factors framework, the potential benefits of a CIRS are illustrated with selected examples from the neonatal and pediatric intensive care unit. Based on a literature search in PubMed from January 2000 to December 2014 this article also describes critical factors and concepts for the successful use of a CIRS. RESULTS: A positive mind-set towards errors, high psychological safety and the conviction that a CIRS can be beneficial are important factors to encourage individual healthcare personnel to report critical incidents and learn from errors. On the part of the organization, adequate resources of personnel, systematic analysis of the reported incidents as well as dissemination of the results and implementation of safety improvement strategies are critical factors for the effective use of a CIRS. All incidents with potential relevance for patient safety should be reported. The categorization of the reported incidents facilitates the analysis and identification of relevant conclusions. As an organization dedicated to improve patient safety we have to learn from errors as well as from successes. CONCLUSION: The successful use of a CIRS depends on the motivation of individual healthcare providers as well as on organizational features that encourage critical incident reporting.

The impact of a register on the management of neonatal cooling in Switzerland.

BACKGROUND: Therapeutic hypothermia following hypoxic ischaemic encephalopathy in term infants was introduced into Switzerland in 2005. Initial documentation of perinatal and resuscitation details was poor and neuromonitoring insufficient. In 2011, a National Asphyxia and Cooling Register was introduced. AIMS: To compare management of cooled infants before and after introduction of the register concerning documentation, neuromonitoring, cooling methods and evaluation of temperature variability between cooling methods. STUDY DESIGN: Data of cooled infants before the register was in place (first time period: 2005-2010) and afterwards (second time period: 2011-2012) was collected with a case report form. RESULTS: 150 infants were cooled during the first time period and 97 during the second time period. Most infants were cooled passively or passively with gel packs during both time periods (82% in 2005-2010 vs 70% in 2011-2012), however more infants were cooled actively during the second time period (18% versus 30%). Overall there was a significant reduction in temperature variability (p < 0.001) comparing the two time periods. A significantly higher proportion of temperature measurements within target temperature range (72% versus 77%, p < 0.001), fewer temperature measurements above (24% versus 7%, p < 0.001) and more temperatures below target range (4% versus 16%, p < 0.001) were recorded during the second time period. Neuromonitoring improved after introduction of the cooling register. CONCLUSION: Management of infants with HIE improved since introducing the register. Temperature variability was reduced, more temperature measurements in the target range and fewer temperature measurements above target range were observed. Neuromonitoring has improved, however imaging should be performed more often.

[Infusion therapy for neonates, infants and children]. / Infusionstherapie bei Neugeborenen, Säuglingen und Kindern.

Intravenous administration of fluids, electrolytes and glucose are the most common interventions in hospitalized pediatric patients. Parenteral fluid administration can be life-saving, however, if used incorrectly it also carries substantial risks. Perioperatively, adequate hydration, prevention of electrolyte imbalances and maintenance of normoglycemia are the main goals of parenteral fluid therapy. Conceptionally, the distinction between maintenance requirements, deficits and ongoing loss is helpful. Although the pathophysiological basis for parenteral fluid therapy was clarified in the first half of the 20th century, some aspects still remain controversial. In newborn infants, rational parenteral fluid therapy must take into account large insensible fluid losses, adaptive changes of renal function in the first days of life and the fact that neonates do not tolerate prolonged periods of fasting. In older infants the occurrence of iatrogenic hyponatremia with the use of hypotonic solutions has led to a critical reappraisal of the validity of the Holliday-Segar method for calculating maintenance fluid requirements in the postoperative period. Pragmatically, only isotonic solutions should be used in clinical situations which are known to be associated with increases in antidiuretic hormone (ADH) secretion. In this context, it is important to realize that in contrast to lactated Ringer's solution, the use of normal saline can lead to hyperchloremic acidosis in a dose-dependent fashion. Although there is no convincing evidence that colloids are better than crystalloids, there are clinical situations where the use of the more expensive colloids seems justified. It may be reasonable to choose a solution for fluid replacement which has a composition comparable to the composition of the fluid which must be replaced. Although hypertonic saline can reduce an elevated intracranial pressure, this therapy cannot be recommended as a routine procedure because there is currently no evidence that this intervention improves long-term outcome in pediatric patients with traumatic brain injury.

[Infections with respiratory syncytial virus. Underestimated risk during anaesthesia in infants]. / Infektionen mit dem "respiratory syncytial virus". Unterschätzte Gefahr bei Säuglingsnarkosen.

Infections with respiratory syncytial virus (RSV) are responsible for a large proportion of seasonal winter airway diseases. After an infection with RSV no persistent immunity remains. Adults show no or only a few symptoms similar to the common cold. However, in preterm and newborn children RSV infections lead to severe and even life-threatening bronchiolitis. These children require supplementary oxygen and often need respiratory support. The infection with RSV considerably enhances the risk of anaesthesia-related complications in infants. So far this problem has rarely been mentioned in the literature. We report on an infant with a RSV infection who was ventilation-dependent for 9 days after anaesthesia for a minor intervention.

Prospective population-based study of RSV-related intermediate care and intensive care unit admissions in Switzerland over a 4-year period (2001-2005).

OBJECTIVES: Respiratory syncytial virus (RSV) infections are a leading cause of hospital admissions in small children. A substantial proportion of these patients require medical and nursing care, which can only be provided in intermediate (IMC) or intensive care units (ICU). This article reports on all children aged < 3 years who required admission to IMC and/or ICU between October 1, 2001 and September 30, 2005 in Switzerland. PATIENTS AND METHODS: We prospectively collected data on all children aged < 3 years who were admitted to an IMC or ICU for an RSV-related illness. Using a detailed questionnaire, we collected information on risk factors, therapy requirements, length of stay in the IMC/ICU and hospital, and outcome. RESULTS: Of the 577 cases reported during the study period, 90 were excluded because the patients did not fulfill the inclusion criteria; data were incomplete in another 25 cases (5%). Therefore, a total of 462 verified cases were eligible for analysis. At the time of hospital admission, only 31 patients (11%) were older than 12 months. Since RSV infection was not the main reason for IMC/ICU admission in 52% of these patients, we chose to exclude this subgroup from further analyses. Among the 431 infants aged < 12 months, the majority (77%) were former near term or full term (NT/FT) infants with a gestational age > or = 35 weeks without additional risk factors who were hospitalized at a median age of 1.5 months. Gestational age (GA) < 32 weeks, moderate to severe bronchopulmonary dysplasia (BPD), and congenital heart disease (CHD) were all associated with a significant risk increase for IMC/ICU admission (relative risk 14, 56, and 10, for GA < or = 32 weeks, BPD, and CHD, respectively). Compared with NT/FT infants, high-risk infants were hospitalized at an older age (except for infants with CHD), required more invasive and longer respiratory support, and had longer stays in the IMC/ICU and hospital. CONCLUSIONS: In Switzerland, RSV infections lead to the IMC/ICU admission of approximately 1%-2% of each annual birth cohort. Although prematurity, BPD, and CHD are significant risk factors, non-pharmacological preventive strategies should not be restricted to these high-risk patients but also target young NT/FT infants since they constitute 77% of infants requiring IMC/ICU admission.

Survival rates of extremely preterm infants (gestational age <26 weeks) in Switzerland: impact of the Swiss guidelines for the care of infants born at the limit of viability.

BACKGROUND: Because ethical decision making in the care of extremely preterm infants varies widely across Europe, the Swiss Society of Neonatology decided to publish its own guidelines on the care of infants born at the limit of viability in 2002. OBJECTIVE: To examine the potential impact of the guidelines on survival rates, short-term complication rates and centre-to-centre outcome differences of extremely preterm infants (22-25 completed weeks). DESIGN: Population-based, retrospective cohort study. SETTING: All nine level III neonatal intensive care units (NICU) and affiliated paediatric hospitals in Switzerland. PATIENTS: 516 extremely preterm infants born alive between 1 January 2000 and 31 December 2004. MAIN OUTCOME MEASURES: Delivery room and NICU mortality rates, survival to hospital discharge and incidence of short-term complications in survivors were assessed. To study the impact of the guidelines, two cohorts from two different time periods were compared (years 2000/2001, n = 220; years 2003/2004, n = 204) whereas patients born in the year of the publication (2002, n = 92) were excluded. For centre-to-centre comparisons, the entire population (n = 516) was analysed. RESULTS: There was a significant increase in survival rates of extremely preterm infants from 31% to 40% (RR 1.24, 95% CI 1.02, 1.50) after the publication of the Swiss guidelines. This improvement was largely explained by significantly improved survival from 42% to 60% (p = 0.01) among infants born at 25 completed weeks because of decreased NICU mortality. Improved survival was not associated with statistically significant changes in the incidence of short-term complications. Despite national guidelines, considerable centre-to-centre outcome differences have persisted. CONCLUSIONS: The publication of the Swiss guidelines was followed by significantly improved survival of extremely preterm infants but had no impact on centre-to-centre differences.

Causes and circumstances of neonatal deaths in 108 consecutive cases over a 10-year period at the Children's Hospital of Lucerne, Switzerland.

BACKGROUND: Neonatal deaths still represent the largest percentage of overall childhood mortality. Many deaths of neonates are preceded by end-of-life decisions; however, decision-making practices have been reported to vary widely from country to country. OBJECTIVES: To analyze principal causes and circumstances of all consecutive neonatal deaths at our institution over a 10-year period. METHODS: All neonates who had died either in the delivery room (DR) or the neonatal intensive care unit (NICU) between January 1, 1997 and December 31, 2006 were identified. Demographic information, principal causes and circumstances of death were abstracted from the individual medical records. RESULTS: There were approximately 72,000 live births in the catchment area of our center with 15,150 deliveries occurring at the Women's Hospital of Lucerne. Of the 108 deaths identified, 29 occurred in the DR (DR mortality rate 0.2%) and 79 in the NICU (NICU mortality rate 2.3%). The majority of DR deaths occurred in the setting of primary nonintervention and were related to extreme prematurity (n = 20), lethal congenital malformations (n = 6) and trisomy 13 (n = 2). One patient with severe perinatal asphyxia died despite full resuscitative efforts. In the NICU, overall mortality rate was inversely related to gestational age (GA). Cardiovascular and respiratory system failures were the predominant causes of death in premature infants with a GA <32 weeks, whereas CNS catastrophes accounted for the majority of deaths in the more mature NICU population. End-of-life decisions were common with less than 10% of deaths occurring despite maximal intensive care. CONCLUSIONS: In our perinatal center, primary nonintervention and redirection of care are the most common circumstances of death in neonates. This reflects our belief that, apart from futility, quality-of-life considerations are an important part of decision making in neonatology.

[Resuscitation of newborn infants]. / Reanimation des Neugeborenen.

Although almost 10% of all newborn infants need some form of respiratory assistance after birth, only 1% will require more advanced forms of resuscitation. Because these rare events cannot always be anticipated, pediatricians and neonatologists may not be readily available and resuscitation will have to be performed by anesthesiologists. In recent years, international guidelines for neonatal resuscitation have been revised by the International Liaison Committee on Resuscitation (ILCOR), the American Academy of Pediatrics (AAP) and the American Heart Association (AHA), as well as the European Resuscitation Council (ERC). The revised guidelines describe a simplified resuscitation algorithm which emphasizes the central role of respiratory support and an increase in heart rate is judged to be the best marker for successful ventilation. In deliveries complicated by meconium-stained amniotic fluid, intrapartum suctioning of the oropharynx is no longer recommended and endotracheal suctioning is restricted to severely depressed babies. The new guidelines mention the use of the laryngeal mask airway (LMA) and CO(2) detectors without, however, making firm recommendations. The use of 100% oxygen in neonatal resuscitation is increasingly being challenged. In the rare event of a newborn whose heart rate drops below 60 beats/min, more advanced resuscitation (chest compressions using the 2-thumb-encircling-hands technique, epinephrine 10-30 mug/kgBW i.v.) will be required. Finally, the guidelines mention the possible neuroprotective effect of therapeutic hypothermia after asphyxia, but finally only recommend that hyperthermia should be avoided.

Massively elevated nucleated red blood cells and cerebral or pulmonary hemorrhage in severely growth-restricted infants--is there more than coincidence?

BACKGROUND: An elevated nucleated red blood cell (NRBC) count is an independent risk factor for postnatal bleeding complications in growth-restricted infants. The etiology of this phenomenon is unclear. OBJECTIVES: To demonstrate a correlation between massively elevated NRBC counts, coagulopathies and unusual or severe bleeding complications. METHODS: The medical records of all severely growth-restricted very low birth weight (VLBW) infants (gestational age <32 0/7 weeks and birth weight at or below the third percentile) admitted to the Neonatal and Pediatric Intensive Care Unit of the Children's Hospital of Lucerne over a 6-year period were reviewed. NRBC counts and coagulation profiles of infants with unusual and/or severe bleeding complications were compared with those of infants without such complications. RESULTS: From a total of 20 severely growth-restricted VLBW infants, 6 had severe or atypical bleeding complications. Among the infants with hemorrhagic complications, the NRBC counts were significantly higher than in the group without such complications (median 24.2 vs. 4.5 x 10(9)/l, p = 0.028). In 2 infants with severe bleeding complications, in whom coagulation studies were performed prior to the occurrence of the hemorrhagic complications, severe clotting abnormalities in addition to massively elevated NRBC counts were detected. CONCLUSIONS: In infants with massively elevated NRBC counts, coagulation studies should be performed. Early and aggressive support of the coagulation system may help to prevent severe bleeding complications in such patients.

[Systemic analgesia adapted to the children's condition]. / Choix de l'analgésie systémique selon le terrain.

A concept of balanced analgesia using nonsteroidal anti-inflammatory drugs (NSAIDs), paracetamol (acetaminophen), opioids, and corticosteroids can also be used in patients with pre-existing illnesses. NSAIDs are the most effective treatment for acute pain of moderate intensity in children; however, these drugs should be avoided in patients at increased risk for serious side effects, e.g. patients with renal impairment, bleeding tendency, or extreme prematurity. NSAIDs can be given with minimal risks to the younger child with mild to moderate asthma, and, in these patients, the use of steroids can be encouraged; in addition to their antiemetic and analgesic action, a beneficial effect on asthma symptoms can be expected. In the non-intubated child with cerebral trauma, exaggerated sedation caused by opioids and increased bleeding tendency caused by NSAIDs must be avoided. In neonates and small infants, the oral administration of sucrose or glucose is helpful to minimize pain reaction during short uncomfortable interventions.

[Ethical considerations in the management of infants born at the limit of viability]. / Ethische Aspekte bei Schwangerschaften an der Grenze der kindlichen Lebensfähigkeit.

Despite ongoing progress in perinatal care over the past decade, mortality rates of infants born before 24 completed weeks of gestation have remained high, and the majority of survivors have at least some degree of neurosensory impairment. With increasing knowledge of long-term follow-up data, quality of life aspects have become more important in treatment decisions for infants born at the limit of viability. Many countries have adopted an individualized approach to the care of these infants. Provisional intensive care is initiated in the delivery room and continued in the neonatal intensive care unit as long as there is a reasonable chance of survival and the expected quality of life appears to justify the patient's pain and suffering. On the other hand, redirection of care becomes an ethically justifiable option once the burdens have begun to outweigh the benefits. The published recommendations from different countries show considerable variability. For example, the gestational age below which preference should be given to palliative care ranges between 22 (Germany, Japan) and 25 completed weeks of gestation (Netherlands). Similarly, parental participation in surrogate decision making varies from country to country. Recommendations which emphasize quality of life aspects tend to encourage parental participation more than recommendations which are primarily based on a sanctity of life ideology. The quest to improve care for infants born at the limit of viability will continue. Trying to push the limit of viability towards even lower gestational ages is not a priority. Research efforts should focus on improving long-term outcome for survivors and on developing high quality palliative care for non-survivors.

[Arterial and central venous catheters in neonates and infants]. / Arterielle und zentralvenöse Katheter bei Neugeborenen und Säuglingen.

In neonates and infants, arterial and central venous catheters are of vital importance to optimize perioperative surveillance during surgery as well as postoperative care in the intensive care unit. The insertion of umbilical venous (UVC) and umbilical arterial catheters (UAC) in neonates in the first days of life is relatively simple and associated with a low procedure-related risk. As with other centrally placed catheters, correct positioning must be verified and the catheters should not be used for more than 5-7 days. Peripherally inserted central catheters (PICC) are commonly used in neonates and can be an alternative to conventional central venous lines in older infants. In order to minimize the risk associated with catheter malposition, correct position must always be verified by appropriate imaging studies or ECG guidance. Surgically placed Broviac catheters are mainly used in patients with a long-term need for central venous access. Finally, it has been shown that adherence to strict guidelines for insertion and handling can significantly reduce catheter-associated infections.

[Ventilation of newborns and infants]. / Beatmung von Neugeborenen und Säuglingen.

Anaesthesiologists must be familiar with the particularities of the respiratory physiology of newborns and infants when providing perioperative care to these patients. Even brief periods of inadequate respiratory support can cause atelectatrauma and volutrauma which in turn can have deleterious cardiorespiratory consequences and accentuate pre-existing lung disease. A variety of respirators and respiratory support strategies are available and should be selected to meet a patient's particular needs. Optimal PEEP and normal tidal volumes during conventional ventilation, high volume strategy during high frequency ventilation, and permissive hypercapnia are the corner stones of a lung protective strategy. Using an interdisciplinary approach, surgery in the intensive care unit using total intravenous anaesthesia with the uninterrupted use of the ICU equipment is an attractive option for the most vulnerable patients in this age group.

Loss of beta1-integrin-deficient cells during the development of endoderm-derived epithelia.

Beta1-integrins (beta1) represent cell surface receptors which mediate cell-matrix and cell-cell interactions. Fässler and Meyer described chimeric mice containing transgenic cells that express the LacZ gene instead of the beta1 gene. They observed beta1-negative cells in all germ layers at embryonic day E 8.5. Later in development, using a glucose phosphate isomerase assay of homogenized tissue samples, high levels of transgenic cells were found in skeletal muscle and gut, low levels in lung, heart, and kidney and none in the liver and spleen (Fässler and Meyer 1995). In order to study which cell types require beta1 during development of the primitive gut including its derivatives, chimeric fetuses containing 15 to 25% transgenic cells were obtained at days E 14.5 and E 15.5. They were LacZ (beta-galactosidase) stained "en bloc" and cross-sectioned head to tail. In esophagus, trachea, lung, stomach, hindgut, and the future urinary bladder, we observed various mesoderm-derived beta1-negative cells (e.g. fibroblasts, chondrocytes, endothelial cells, and smooth muscle cells) but no beta1-negative epithelial cells. Since the epithelia of lung, esophagus, trachea, stomach, hindgut, and urinary bladder are derived from the endodermal gut tube, we hypothesize that beta1 is essential for the development and/or survival of the epithelia of the fore- and hindgut and its derivatives.

Severe autonomic dysfunction in an 11-year-old girl with generalised tetanus.

Tetanus can occur even after minor injuries, and proper immunisation status must be ascertained and documented in every surgical patient. Failure to do so can have dramatic consequences. An 11-year-old non-immunised girl was admitted to the intensive care unit with severe generalised tetanus 8 days following an open fracture of the right forearm. Although she was under deep sedation and received high doses of opiates while being paralysed and mechanically ventilated, she developed pronounced cardiovascular instability with tachycardia and periods of rapid changes between arterial hyper- and hypotension secondary to severe autonomic dysfunction. Her cardiovascular status only began to stabilise after 14 days under concomitant treatment with clonidine, magnesium sulphate and labetalol.

Successful treatment of bilateral renal fungal balls with liposomal amphotericin B and fluconazole in an extremely low birth weight infant.

UNLABELLED: At the age of 8 weeks, an extremely low birth weight infant (gestational age 26 0/7 weeks, birth weight 740 g) had non-obstructing bilateral renal fungal balls. Urine cultures had repeatedly grown Candida albicans. Combination therapy with liposomal amphotericin B intravenously and fluconazole orally was administered for 6 weeks. Monotherapy with fluconazole was then continued until complete resolution of the renal fungal balls. CONCLUSION: Combination therapy with liposomal amphotericin B and fluconazole was successful in eliminating non-obstructing bilateral renal fungal balls and obviated the need for surgical intervention.