Neonatal late-onset infection with SARS CoV-2 / [Sepsis neonatal tardía por SARS CoV-2].

During the SARS COV-2 pandemic, the vast majority of infected patients are showing symptoms related to lung damage. At pediatric ages, especially newborns, symptoms from other organ systems without respiratory illness could make COVID-19 hard to diagnose. We are reporting three cases of newborns who were attended in the course of the mitigation phase in the emergency service of a maternal hospital in Barranquilla, Colombia, for high temperature and general compromised condition. During their clinical course, they developed gastrointestinal symptoms without showing any respiratory manifestations. They were not epidemiologically linked to a contact suspected to be a COVID-19 case and their mothers had had no respiratory symptoms since the public health emergency in our country was declared 45 days before. The absence of clinical respiratory manifestations in this group of patients with COVID-19 should draw clinicians' attention to the need to suspect SARS CoV-2 infection in febrile newborns.

Durante la pandemia por SARS CoV-2 la gran mayoría de pacientes ha presentado afectación pulmonar como síntoma cardinal. En los niños, especialmente en recién nacidos, la sintomatología debida al efecto en otros sistemas diferentes al respiratorio puede dificultar el diagnóstico. Se reportan tres casos de recién nacidos atendidos durante la fase de mitigación de la pandemia por SARS CoV-2 en el servicio de urgencias de un hospital materno-infantil en Barranquilla, Colombia, por presentar cuadros febriles que afectaban su estado general. En su evolución clínica predominó la sintomatología gastrointestinal sin que desarrollaran nunca manifestaciones respiratorias. La investigación epidemiológica no evidenció contacto con casos sospechosos o positivos para COVID-19. Sus madres no habían tenido síntomas respiratorios en los 45 días transcurridos desde la declaración de la emergencia en salud pública en el país. La ausencia de manifestaciones clínicas respiratorias en este grupo de pacientes con COVID-19 debe llamar la atención de los clínicos sobre la necesidad de sospechar la infección por SARS CoV-2 en recién nacidos con estados febriles.

CCHD Screening Implementation Efforts in Latin American Countries by the Ibero American Society of Neonatology (SIBEN).

Congenital heart disease (CHD) is among the four most common causes of infant mortality in Latin America. Pulse oximetry screening (POS) is useful for early diagnosis and improved outcomes of critical CHD. Here, we describe POS implementation efforts in Latin American countries guided and/or coordinated by the Ibero American Society of Neonatology (SIBEN), as well as the unique challenges that are faced for universal implementation. SIBEN collaborates to improve the neonatal quality of care and outcomes. A few years ago, a Clinical Consensus on POS was finalized. Since then, we have participated in 12 Latin American countries to educate neonatal nurses and neonatologists on POS and to help with its implementation. The findings reveal that despite wide disparities in care that exist between and within countries, and the difficulties and challenges in implementing POS, significant progress has been made. We conclude that universal POS is not easy to implement in Latin America but, when executed, has not only been of significant value for babies with CHD, but also for many with other hypoxemic conditions. The successful and universal implementation of POS in the future is essential for reducing the mortality associated with CHD and other hypoxemic conditions and will ultimately lead to the survival of many more Latin American babies. POS saves newborns' lives in Latin America.

Sepsis neonatal tardía por SARS CoV-2 / Neonatal late-onset infection with SARS CoV-2

Durante la pandemia por SARS CoV-2 la gran mayoría de pacientes ha presentado afectación pulmonar como síntoma cardinal. En los niños, especialmente en recién nacidos, la sintomatología debida al efecto en otros sistemas diferentes al respiratorio puede dificultar el diagnóstico. Se reportan tres casos de recién nacidos atendidos durante la fase de mitigación de la pandemia por SARS CoV-2 en el servicio de urgencias de un hospital materno-infantil en Barranquilla, Colombia, por presentar cuadros febriles que afectaban su estado general. En su evolución clínica predominó la sintomatología gastrointestinal sin que desarrollaran nunca manifestaciones respiratorias. La investigación epidemiológica no evidenció contacto con casos sospechosos o positivos para COVID-19. Sus madres no habían tenido síntomas respiratorios en los 45 días transcurridos desde la declaración de la emergencia en salud pública en el país. La ausencia de manifestaciones clínicas respiratorias en este grupo de pacientes con COVID-19 debe llamar la atención de los clínicos sobre la necesidad de sospechar la infección por SARS CoV-2 en recién nacidos con estados febriles.

During the SARS COV-2 pandemic, the vast majority of infected patients are showing symptoms related to lung damage. At pediatric ages, especially newborns, symptoms from other organ systems without respiratory illness could make COVID-19 hard to diagnose. We are reporting three cases of newborns who were attended in the course of the mitigation phase in the emergency service of a maternal hospital in Barranquilla, Colombia, for high temperature and general compromised condition. During their clinical course, they developed gastrointestinal symptoms without showing any respiratory manifestations. They were not epidemiologically linked to a contact suspected to be a COVID-19 case and their mothers had had no respiratory symptoms since the public health emergency in our country was declared 45 days before. The absence of clinical respiratory manifestations in this group of patients with COVID-19 should draw clinicians' attention to the need to suspect SARS CoV-2 infection in febrile newborns.

Seroprevalence of Zika virus among blood donors before the epidemic in Barranquilla, Colombia, 2015-2016.

The first cases of Zika virus infection in Colombia were reported and confirmed in October 2015. The objective of the study was estimate the seroprevalence of ZIKV infection during the pre-epidemic phase in Barranquilla, Colombia, and demonstrate the presence of virus before the Colombian Ministry of Health confirmed the first case. We conducted a descriptive study of the seroprevalence of Zika virus in 390 samples obtained from a blood bank located in Barranquilla, Colombia - a city endemic for dengue, and with a recent history of a Chikungunya disease epidemic. The serum pools were tested using Euroimmun ZIKV ELISA kit. Seroprevalence of Zika virus IgG were: May 2015: 0%, June and July 2015: 2.62% (95% CI = 0.28-12.13) and August 2015: 5.35% (95% CI = 1.74-16.74). This brings to our attention the need for extending the surveillance period of this virus in order to adequately assess its teratogenic effects.

Severe Neurologic Disorders in 2 Fetuses with Zika Virus Infection, Colombia.

We report the results of pathologic examinations of 2 fetuses from women in Colombia with Zika virus infection during pregnancy that revealed severe central nervous system defects and potential associated abnormalities of the eye, spleen, and placenta. Amniotic fluid and tissues from multiple fetal organs tested positive for Zika virus.

Consenso sobre el abordaje diagnóstico y terapéutico del dolor y el estrés en el recién nacido / Consensus on the diagnostic and therapeutic approach to pain and stress in the newborn

El dolor y estrés en el recién nacido (RN) se ha tratado en forma insuficiente; los recién nacidos que ingresan a las unidades de cuidados intensivos neonatales (UCIN), a menudo deben someterse a procedimientos invasivos, dolorosos y estresantes y el tratamiento inadecuado incrementa la morbimortalidad. El V Consenso Clínico de la Sociedad Iberoamericana de Neonatología convocó a 32 neonatólogos de Iberoamérica para establecer las recomendaciones sobre diagnóstico y terapéutica del dolor y estrés neonatal. Se desarrollaron temas de relevancia, utilizando la mejor evidencia científica disponible en bases de datos indizadas. Todos participaron en forma activa en una reunión presencial en Santiago de Chile para consensuar las recomendaciones y conclusiones. El dolor y el estrés neonatal afectan el neurodesarrollo y la conducta a largo plazo, requieren el diagnóstico oportuno, el manejo y la terapéutica adecuada, incluso con fármacos que permitan balancear la efectividad y toxicidad. El Consenso señala la importancia de evaluar el dolor en el RN en forma multidimensional y proporciona recomendaciones de las indicaciones y limitaciones para la terapia farmacológica individualizada. El uso de los analgésicos tiene indicaciones precisas y debe limitarse por la carencia de estudios aleatorizados en RN, ya que en todos los casos existen efectos adversos a considerar. Se proponen medidas no farmacológicas para mitigar el dolor. El manejo del estrés debe comenzar en la sala de partos e incluir el contacto materno, la reducción de estímulos, la implementación de protocolos de intervención reducida, entre otros. SIBEN propone las recomendaciones para mejorar las prácticas clínicas relacionadas con el dolor y el estrés neonatal.

Pain and stress experienced by the newborn have not been addressed adequately. Infants in neonatal intensive care units often undergo painful and stressful invasive procedures, and inappropriate treatment increases morbidity and mortality. At the 5th Clinical Consensus of the Ibero-American Society of Neonatology, 32 neonatologists from the region were invited to establish recommendations for the diagnosis and treatment of neonatal pain and stress. Key themes were explored based on the best scientific evidence available in indexed databases. All attendees participated actively in a meeting in Santiago, Chile, with the objective of reaching a consensus on recommendations and conclusions. Pain and neonatal stress affect neurological development and long-term behavior and require timely diagnosis and appropriate management and treatment, including the use of drugs with an appropriate balance between effectiveness and toxicity. The Consensus emphasized the importance of assessing pain in the newborn from a multidimensional viewpoint, and provided recommendations on the indications and limitations for an individualized pharmacological therapy. The use of analgesics has precise indications but also important limitations; there is a lack of randomized studies in newborns, and adverse effects need to be considered. Nonpharmacological measures to mitigate pain were proposed. Stress management should begin in the delivery room, including maternal contact, stimulus reduction and the implementation of intervention reduction protocols. Recommendations for improving clinical practices related to neonatal pain and stress are presented.

Safe oxygen saturation targeting and monitoring in preterm infants: can we avoid hypoxia and hyperoxia?

UNLABELLED: Oxygen is a neonatal health hazard that should be avoided in clinical practice. In this review, an international team of neonatologists and nurses assessed oxygen saturation (SpO2 ) targeting in preterm infants and evaluated the potential weaknesses of randomised clinical trials. CONCLUSION: SpO2 of 85-89% can increase mortality and 91-95% can cause hyperoxia and ill effects. Neither of these ranges can be recommended, and wider intermediate targets, such as 87-94% or 88-94%, may be safer.

[Consensus on the diagnostic and therapeutic approach to pain and stress in the newborn]. / Consenso sobre el abordaje diagnóstico y terapéutico del dolor y el estrés en el recién nacido.

Pain and stress experienced by the newborn have not been addressed adequately. Infants in neonatal intensive care units often undergo painful and stressful invasive procedures, and inappropriate treatment increases morbidity and mortality. At the 5th Clinical Consensus of the Ibero-American Society of Neonatology, 32 neonatologists from the region were invited to establish recommendations for the diagnosis and treatment of neonatal pain and stress. Key themes were explored based on the best scientific evidence available in indexed databases. All attendees participated actively in a meeting in Santiago, Chile, with the objective of reaching a consensus on recommendations and conclusions. Pain and neonatal stress affect neurological development and long-term behavior and require timely diagnosis and appropriate management and treatment, including the use of drugs with an appropriate balance between effectiveness and toxicity. The Consensus emphasized the importance of assessing pain in the newborn from a multidimensional viewpoint, and provided recommendations on the indications and limitations for an individualized pharmacological therapy. The use of analgesics has precise indications but also important limitations; there is a lack of randomized studies in newborns, and adverse effects need to be considered. Nonpharmacological measures to mitigate pain were proposed. Stress management should begin in the delivery room, including maternal contact, stimulus reduction and the implementation of intervention reduction protocols. Recommendations for improving clinical practices related to neonatal pain and stress are presented.

Infecção por vírus sincicial respiratório como causa de internação na população com menos de 1 ano na Colômbia / Respiratory syncytial virus infection as a cause of hospitalization in population under 1 year in Colombia

OBJETIVO: determinar a frequência, as complicações e a sazonalidade com que a infecção pelo vírus sincicial respiratório (VSR) do trato respiratório inferior causa hospitalização em neonatos com um ano de idade ou menos, em seis cidades da Colômbia. MÉTODOS: estudo observacional prospectivo multicêntrico de um ano que incluiu 717 pacientes, que compareceram ao serviço de emergência com sintomas respiratórios em seis cidades da Colômbia. As crianças hospitalizadas foram testadas para verificar a existência de VSR com teste de imunofluorescência das secreções nasofaríngeas. Foram realizadas análises descritivas e estatísticas da população. RESULTADOS: a população estudada incluiu 717 pacientes com uma idade média de 3,6 meses (DP 3,25), na proporção de 4:3 do sexo masculino para o sexo feminino e uma prevalência de ITRI por VSR de 30% (216 neonatos/cidade, faixa 26-49%). Os fatores de risco para ITRI por VSR foram encontrados em 8,2% da população, dos quais 28,8% foram positivos para VSR. Os grupos positivo e negativo para VSR foram comparados utilizando um teste t bicaudal com IC de 95%, p < 0,05. Não foram constatadas diferenças estatisticamente significativas. Todas as cidades apresentaram trimestres anuais específicos para ocorrência de ITRI por VSR. CONCLUSÕES: o VSR causou uma em três internações de ITRI na população, com uma incidência de 30%. Isso confirma uma circulação contínua do VSR na Colômbia, que varia pela localização geográfica.

OBJECTIVE: to determine the frequency, complications and seasonality at which respiratory syncytial virus (RSV) infection of the lower respiratory tract causes hospitalization in infants of age 1 year or less in 6 cities of Colombia. METHODS: one-year prospective multicentric observational study that included 717 patients presenting to the emergency department with respiratory symptoms in 6 cities of Colombia. Hospitalized children were tested for RSV with an immunofluorescence rapid test in nasopharyngeal secretions. Descriptive and statistical analyses of the population were conducted. RESULTS: the study population included 717 patients with a mean age of 3.6 months (SD 3.25), 4:3 male: female ratio and a positive RSV LRTI prevalence of 30.0% (216 infants/City, range 26.0 - 49.0%). Risk factors for RSV LRTI were found in 8.2% of the population, of which 28.8% were RSV positive. RSV positive and negative groups were compared using a two-tailed t test with 95.0%CI, p < 0.05. No statistically significant differences were found. All cities presented specific year trimesters in the occurrence of RSV LRTI. CONCLUSIONS: the RSV caused 1 in 3 LRTI hospitalizations in the population, with an incidence of 30.0%. This confirms a continuous circulation of RSV in Colombia varying by geographic location.

Respiratory syncytial virus infection as a cause of hospitalization in population under 1 year in Colombia.

OBJECTIVE: to determine the frequency, complications and seasonality at which respiratory syncytial virus (RSV) infection of the lower respiratory tract causes hospitalization in infants of age 1 year or less in 6 cities of Colombia. METHODS: one-year prospective multicentric observational study that included 717 patients presenting to the emergency department with respiratory symptoms in 6 cities of Colombia. Hospitalized children were tested for RSV with an immunofluorescence rapid test in nasopharyngeal secretions. Descriptive and statistical analyses of the population were conducted. RESULTS: the study population included 717 patients with a mean age of 3.6 months (SD 3.25), 4:3 male: female ratio and a positive RSV LRTI prevalence of 30.0% (216 infants/City, range 26.0 - 49.0%). Risk factors for RSV LRTI were found in 8.2% of the population, of which 28.8% were RSV positive. RSV positive and negative groups were compared using a two-tailed t test with 95.0%CI, p < 0.05. No statistically significant differences were found. All cities presented specific year trimesters in the occurrence of RSV LRTI. CONCLUSIONS: the RSV caused 1 in 3 LRTI hospitalizations in the population, with an incidence of 30.0%. This confirms a continuous circulation of RSV in Colombia varying by geographic location.

First Colombian multicentric newborn screening for congenital toxoplasmosis.

AIMS: To determine the incidence of congenital toxoplasmosis in Colombian newborns from 19 hospital or maternal child health services from seven different cities of five natural geographic regions (Caribbean, Central, Andean, Amazonia and Eastern). MATERIALS AND METHODS: We collected 15,333 samples from umbilical cord blood between the period of March 2009 to May 2010 in 19 different hospitals and maternal-child health services from seven different cities. We applied an IgM ELISA assay (Vircell, Spain) to determine the frequency of IgM anti Toxoplasma. The results in blood cord samples were confirmed either by western blot and repeated ELISA IgM assay. In a sub-sample of 1,613 children that were negative by the anti-Toxoplasma IgM assay, the frequency of specific anti-Toxoplasma IgA by the ISAGA assay was determined. All children with positive samples by IgM, IgA, clinical diagnosis or treatment during pregnancy were recalled for confirmatory tests after day 10 of life. RESULTS: 61 positive samples for specific IgM (0.39%) and 9 positives for IgA (0.5%) were found. 143 questionnaires were positive for a clinical diagnosis or treatment for toxoplasmosis during pregnancy. 109 out of the 218 children that had some of the criteria for postnatal confirmatory tests were followed. Congenital toxoplasmosis infection was confirmed in 15 children: 7 were symptomatic, and three of them died before the first month of life (20% of lethality). A significant correlation was found between a high incidence of markers for congenital toxoplasmosis and higher mean annual rainfall for the city. CONCLUSIONS: Incidence for congenital toxoplasmosis is significantly different between hospitals or maternal child health services from different cities in Colombia. Mean annual rainfall was correlated with incidence of congenital toxoplasmosis.

[Second Clinical Consensus of the Ibero-American Society of Neonatology: hemodynamic management of newborns]. / Segundo Consenso Clínico de la Sociedad Iberoamericana de Neonatología: manejo hemodinámico del recién nacido.

This study reports on the process and results of the Second Clinical Consensus of the Ibero-American Society of Neonatology. Eighty neonatologists from 23 countries were invited to collaborate and participate in the event. Several questions of clinical-physiological importance in the hemodynamic management of newborns were addressed. Participants were divided into groups to facilitate interaction and teamwork, with instructions to respond to three to five questions by analyzing the literature and local factors. Meeting in Mar del Plata, Argentina, the Consensus Group served as a form for various presentations and discussions. In all, 54 neonatologists from 21 countries attended, with the objective of reaching a consensus on such matters as concepts and definitions of hemodynamic instability, the physiopathology of hemodynamic compromise, recommended therapy strategies, and hemodynamic monitoring. It is hoped that this international experience will serve as a useful initiative for future consensus building and reduction of the existing disparities among the countries of the Region in terms of treatment and outcomes.

Segundo Consenso Clínico de la Sociedad Iberoamericana de Neonatología: manejo hemodinámico del recién nacido / Second Clinical Consensus of the Ibero-American Society of Neonatology: hemodynamic management of newborns

Este trabajo informa acerca del proceso y los resultados del Segundo Consenso Clínico de la SIBEN (Sociedad Iberoamericana de Neonatología), en el cual 80 neonatólogos de 23 países fueron invitados a participar y colaborar. Se desarrollaron varias preguntas de importancia clínico-fisiológica sobre el manejo hemodinámico del recién nacido. Los participantes fueron distribuidos en grupos, facilitando así la interacción y el trabajo conjunto, con la consigna de responder de tres a cinco preguntas mediante el análisis de bibliografía y factores locales. El Grupo de Consenso se reunió en Mar del Plata, Argentina, donde se llevaron a cabo diversas ponencias, debates y presentaciones. En total participaron 54 neonatólogos de 21 países, con el objetivo de desarrollar un consenso sobre aspectos que incluyeron conceptos y definiciones de inestabilidad hemodinámica, la fisiopatología del cuadro de compromiso hemodinámico, las estrategias terapéuticas recomendadas y el monitoreo hemodinámico. Se espera que esta experiencia internacional sirva como una iniciativa útil tanto para la búsqueda de futuros consensos como para reducir las disparidades existentes entre los tratamientos y resultados de los diferentes países de la Región.

This study reports on the process and results of the Second Clinical Consensus of the Ibero-American Society of Neonatology. Eighty neonatologists from 23 countries were invited to collaborate and participate in the event. Several questions of clinical-physiological importance in the hemodynamic management of newborns were addressed. Participants were divided into groups to facilitate interaction and teamwork, with instructions to respond to three to five questions by analyzing the literature and local factors. Meeting in Mar del Plata, Argentina, the Consensus Group served as a form for various presentations and discussions. In all, 54 neonatologists from 21 countries attended, with the objective of reaching a consensus on such matters as concepts and definitions of hemodynamic instability, the physiopathology of hemodynamic compromise, recommended therapy strategies, and hemodynamic monitoring. It is hoped that this international experience will serve as a useful initiative for future consensus building and reduction of the existing disparities among the countries of the Region in terms of treatment and outcomes.

Avoiding hyperoxemia during neonatal resuscitation: time to response of different SpO2 monitors.

AIM: To assess the time to obtain reliable oxygen saturation readings by different pulse oximeters during neonatal resuscitation in the delivery room or NICU. METHODS: Prospective study comparing three different pulse oximeters: Masimo Radical-7 compared simultaneously with Ohmeda Biox 3700 or with Nellcor N395, in newborn infants who required resuscitation. Members of the research team placed the sensors for each of the pulse oximeters being compared simultaneously, one sensor on each foot of the same baby. Care provided routinely, without interference by the research team. The time elapsed until a reliable SpO2 was obtained was recorded using a digital chronometer. Statistical comparisons included chi-square and student's T-test. RESULTS: Thirty-two infants were enrolled; median gestational age 32 weeks. Seventeen paired measurements were made with the Radical-7 and Biox 3700; mean time to a stable reading was 20.2±7 sec for the Radical-7 and 74.2±12 sec for the Biox 3700 (p=0.02). The Radical-7 and the N- 395 were paired on 15 infants; the times to obtain a stable reading were 20.9±4 sec and 67.3±12 sec, respectively (p=0.03). CONCLUSION: The time to a reliable reading obtained simultaneously in neonatal critical situations differs by the type of the pulse oximeter used, being significantly faster with Masimo Signal Extraction Technology. This may permit for better adjustments of inspired oxygen, aiding in the prevention of damage caused by unnecessary exposure to high or low oxygen.

Maternal allopurinol during fetal hypoxia lowers cord blood levels of the brain injury marker S-100B.

BACKGROUND: Fetal hypoxia is an important determinant of neonatal encephalopathy caused by birth asphyxia, in which hypoxia-induced free radical formation plays an important role. HYPOTHESIS: Maternal treatment with allopurinol, will cross the placenta during fetal hypoxia (primary outcome) and reduce S-100B and free radical formation (secondary outcome). METHODS: In a randomized, double-blind feasibility study, 53 pregnant women in labor (54 fetuses) with a gestational age of >36 weeks and fetal hypoxia, as indicated by abnormal/nonreassuring fetal heart rate tracing or fetal scalp pH of <7.20, received 500 mg of allopurinol or placebo intravenously. Severity of fetal hypoxia, brain damage and free radical formation were assessed by arterial cord blood lactate, S-100B and non-protein-bound-iron concentrations, respectively. At birth, maternal and cord blood concentrations of allopurinol and its active metabolite oxypurinol were determined. RESULTS: Allopurinol and oxypurinol concentrations were within the therapeutic range in the mother (allopurinol > 2 mg/L and/or oxypurinol > 4 mg/L) but not always in arterial cord blood. We therefore created 3 groups: a placebo (n = 27), therapeutic allopurinol (n = 15), and subtherapeutic allopurinol group (n = 12). Cord lactate concentration did not differ, but S-100B was significantly lower in the therapeutic allopurinol group compared with the placebo and subtherapeutic allopurinol groups (P < .01). Fewer therapeutic allopurinol cord samples had measurable non-protein-bound iron concentrations compared with placebo (P < .01). CONCLUSIONS: Maternal allopurinol/oxypurinol crosses the placenta during fetal hypoxia. In fetuses/newborns with therapeutic allopurinol/oxypurinol concentrations in cord blood, lower plasma levels of the brain injury marker protein S-100B were detected. A larger allopurinol trial in compromised fetuses at term seems warranted. The allopurinol dosage must be adjusted to achieve therapeutic fetal allopurinol/oxypurinol concentrations.

Pulse oxygen saturation levels and arterial oxygen tension values in newborns receiving oxygen therapy in the neonatal intensive care unit: is 85% to 93% an acceptable range?

OBJECTIVE: Our aim was to define the relationship of PaO(2) and pulse oxygen saturation values during routine clinical practice and to evaluate whether pulse oxygen saturation values between 85% and 93% were associated with PaO(2) levels of <40 mmHg. METHODS: Prospective comparison of PaO(2) and pulse oxygen saturation values in 7 NICUs at sea level in 2 countries was performed. The PaO(2) measurements were obtained from indwelling arterial catheters; simultaneous pulse oxygen saturation values were recorded if the pulse oxygen saturation values changed <1% before, during, and after the arterial gas sample was obtained. RESULTS: We evaluated 976 paired PaO(2)/pulse oxygen saturation values in 122 neonates. Of the 976 samples, 176 (18%) from infants breathing room air had a mean pulse oxygen saturation of 93.9 +/- 4.3% and a median of 95.5%. The analysis of 800 samples from infants breathing supplemental oxygen revealed that, when pulse oxygen saturation values were 85% to 93%, the mean PaO(2) was 56 +/- 14.7 mmHg and the median 54 mmHg. At this pulse oxygen saturation level, 86.8% of the samples had PaO(2) values of 40 to 80 mmHg, 8.6% had values of <40 mmHg, and 4.6% had values of >80 mmHg. When the pulse oxygen saturation values were >93%, the mean PaO(2) was 107.3 +/- 59.3 mmHg and the median 91 mmHg. At this pulse oxygen saturation level, 39.5% of the samples had PaO(2) values of 40 to 80 mmHg and 59.5% had values of >80 mmHg. CONCLUSIONS: High PaO(2) occurs very rarely in neonates breathing supplemental oxygen when their pulse oxygen saturation values are 85% to 93%. This pulse oxygen saturation range also is infrequently associated with low PaO(2) values. Pulse oxygen saturation values of >93% are frequently associated with PaO(2) values of >80 mmHg, which may be of risk for some newborns receiving supplemental oxygen.

Oral sildenafil in infants with persistent pulmonary hypertension of the newborn: a pilot randomized blinded study.

BACKGROUND: Persistent pulmonary hypertension (PPHN) occurs in as many as 6.8 of 1000 live births. Mortality is approximately 10% to 20% with high-frequency ventilation, surfactant, inhaled nitric oxide, and extracorporeal membrane oxygenation but is much higher when these therapies are not available. Sildenafil is a phosphodiesterase inhibitor type 5 that selectively reduces pulmonary vascular resistance. OBJECTIVE: Our goal was to evaluate the feasibility of using oral sildenafil and its effect on oxygenation in PPHN. DESIGN: This study was a proof-of-concept, randomized, masked study in infants >35.5 weeks' gestation and <3 days old with severe PPHN and oxygenation index (OI) >25 admitted to the NICU (Hospital Niño Jesús, Barranquilla, Colombia). The sildenafil solution was prepared from a 50-mg tablet. The first dose (1 mg/kg) or placebo was given by orogastric tube <30 minutes after randomization and every 6 hours. Preductal saturation and blood pressure were monitored continuously. OI was calculated every 6 hours. The main outcome variable was the effect of oral sildenafil on oxygenation. Sildenafil or placebo was discontinued when OI was <20 or if there was no significant change in OI after 36 hours. RESULTS: Six infants with an OI of >25 received placebo, and 7 received oral sildenafil at a median age of 25 hours. All infants were severely ill, on fraction of inspired oxygen 1.0, and with similar ventilatory parameters. Intragastric sildenafil and placebo were well tolerated. In the treatment group, OI improved in all infants within 6 to 30 hours, all showed a steady improvement in pulse oxygen saturation over time, and none had noticeable effect on blood pressure; 6 of 7 survived. In the placebo group, 1 of 6 infants survived. CONCLUSIONS: Oral sildenafil was administered easily and tolerated as well as placebo and improved OI in infants with severe PPHN, which suggests that oral sildenafil may be effective in the treatment of PPHN and underscores the need for a large, controlled trial.

Afiliación y uso de servicios de salud en habitantes de 14 barrios de las localidades Usaquén y Chapinero, de Bogotá - 2001 / Affiliation and use of health services in 14 neighborhoods of Usaquén and Chapinero, Bogotá - 2001

Antecedentes La Fundación Santa Fe de Bogotá realizó en 2001 un censo de salud que permitió actualizar la información recolectada en dos censos anteriores sobre morbilidad, mortalidad, afiliación, uso de servicios y participación comunitaria. Objetivo El objetivo del presente artículo es describir las características de la población afiliada y no afiliada en relación con variables como nivel del Sisbén, ingreso y uso de servicios de salud en una población de 14 barrios ubicados en las localidades de Usaquén y Chapinero. Metodología El diseño de este estudio es esencialmente descriptivo transversal. El universo lo componen los residentes en 14 barrios del nororiente de la ciudad, ubicados en las localidades de Chapinero y Usaquén. Las encuestas se aplicaron en diciembre de 2001 en cada hogar de los barrios, para un total de 3.363 hogares y 13.427 personas. Resultados La cobertura en la afiliación a la seguridad social en salud en los dos sectores se ubica en el 86% de la población en 2001. La aplicación del Sisbén para la focalización de los subsidios en salud llegó al 76% de las personas y el uso de servicios de la población que los necesitó por causas de enfermedad fue superior al 65% en ambos sectores, lo cual estaría demostrando una utilización real de los servicios básicos y, así mismo, de acceso. La calidad de los servicios recibidos fue del 84% en los dos sectores y la participación social, de alrededor del 40%.

Background Fundación Santa Fe de Bogotá conducted a health census in 2001 to update the information collected in two previous censuses on morbidity, mortality, affiliation, use of services and community participation. Objective The objective of this article is to describe the characteristics of the affiliated and non-affiliated population in relation to variables such as Sisbén level, income and use of health services in a population of 14 neighborhoods located in the localities of Usaquén and Chapinero. Methodology The design of this study is essentially descriptive and cross-sectional. The universe is composed of residents in 14 neighborhoods in the northeastern part of the city, located in the localities of Chapinero and Usaquén. The surveys were administered in December 2001 in each household of the neighborhoods, for a total of 3,363 households and 13,427 persons. Results Social security health insurance coverage in the two sectors was 86% of the population in 2001. The application of the Sisbén system for targeting health subsidies reached 76% of the population and the use of services by the population that needed them due to illness was over 65% in both sectors, which demonstrates a real use of basic services and, likewise, access to them. The quality of services received was 84% in both sectors and social participation was around 40%.