Changes in Neonatal Intensive Care Unit statistics during the COVID-19 pandemic.

BACKGROUND: With the identification of COVID-19 disease in China, a pandemic began that affected health-care systems. The Neonatal Intensive Care Unit (NICU) of the Hospital de Ginecobstetricia del Centro Médico Nacional de Occidente experienced an increase in patient flow as part of the COVID-19 strategy of the Instituto Mexicano del Seguro Social (IMSS). This study aimed to analyze the impact of the COVID-19 pandemic on neonatal care and mortality indicators in our unit. METHODS: We conducted a retrospective study to compare the number of hospital births, pre-term newborns (PTNB), NICU admissions, and deaths. Changes in frequencies between 2019 and 2021 were analyzed using Poisson distribution. Changes in PTNB births, proportion of admissions, and deaths/NICU discharges were analyzed by z-test for two proportions. RESULTS: Between 2019 and 2021, the number of births increased by more than 2-fold. NICU admissions increased from 770 in 2019 to 1045 in 2021 (p < 0.01). The ratio of deaths/discharge from the service was 16.9% in 2019 and 13.1% in 2021 (p = 0.02). CONCLUSIONS: Mortality indicators in the NICU decreased from 2019 to 2021, even with the increase in the number of patients admitted during the COVID-19 pandemic.

INTRODUCCIÓN: Con la identificación de la enfermedad por COVID-19 en China, inició una pandemia que afectó a los sistemas de salud. La Unidad de Cuidados Intensivos Neonatales (UCIN) del Hospital de Ginecobstetricia del Centro Médico Nacional de Occidente del Instituto Mexicano del Seguro Social (IMSS) vio incrementado su flujo de pacientes como parte de la Estrategia COVID-19 del IMSS. El objetivo fue analizar el impacto de la pandemia COVID-19 en los indicadores de atención y mortalidad neonatal en nuestra unidad. MÉTODOS: Se realizó un estudio retrospectivo para comparar el número de nacimientos en el hospital, nacimientos de recién nacidos prematuros (RNPT), ingresos a UCIN y defunciones. Se analizaron los cambios en frecuencias entre los años 2019 a 2021 mediante la distribución de Poisson. Los cambios en nacimientos de RNPT, proporción de ingresos y defunciones/egreso en UCIN se analizaron mediante prueba Z para dos proporciones. RESULTADOS: Entre los años 2019 a 2021, el número de nacimientos incrementó más de 2 veces. Los ingresos a UCIN aumentaron de 770 en 2019, a 1045 en 2021 (p < 0.01). La proporción de defunciones/egreso del servicio fue de 16.9% en 2019, y 13.1% en 2021 (p = 0.02). CONCLUSIONES: Los indicadores de mortalidad en la UCIN disminuyeron de 2019 a 2021, aun con el incremento en el número de pacientes atendidos durante la pandemia COVID-19.

Intervención Psicofisiológica basada en la Teoría Polivagal para Manejo del Dolor Lumbar Crónico / Psychophysiological Intervention based on the Polyvagal Theory for the Management of Chronic Low Back Pain

Resumen El dolor lumbar crónico es un padecimiento común asociado a problemas físicos y afectivos. Recientemente, Dana (2019) sugirió un conjunto de estrategias psicológicas breves, basadas en los principios de la Teoría Polivagal, para el manejo del estrés, sin embargo, su uso no se ha aplicado en el campo del dolor. El presente estudio evaluó la eficacia de un plan de tratamiento en regulación autonómica del complejo vagal ventral para la disminución de la intensidad e interferencia del dolor, así como el efecto sobre la ansiedad, la depresión y catastrofización. Mediante un estudio pre experimental, con un muestreo no probabilístico, se utilizó un diseño de medidas repetidas para evaluar los efectos de un programa breve en pacientes con lumbalgia, sobre medidas psicométricas de dolor, ansiedad, depresión y catastrofización, así como la regulación fisiológica autonómica de la Frecuencia Cardiaca y la Temperatura Periférica. Los resultados revelaron una disminución significativa (p < .05) de la interferencia del dolor del estado anímico, el trabajo, la ansiedad, depresión y la catastrofización; así como un incremento en la temperatura periférica. Esto sugiere que el tratamiento fue eficaz para el manejo de problemas afectivos de estos pacientes, y consistente con los niveles de activación fisiológica propuestos por la Teoría Polivagal.

Abstract Chronic low back pain is a common chronic pain condition, associated with physical and emotional problems. Recently, Dana (2019) suggested a set of brief psychological strategies, based on the principles of the Polyvagal Theory, for stress management in people with chronic affective problems; however, no use has not been applied in the field of pain. The purpose of this study was to evaluate the efficacy of a treatment plan based on the autonomic regulation of the ventral vagal complex for the reduction of pain intensity, mood, behavioral and social interference, as well as the effect on anxiety, depression, and catastrophizing associated with pain. Through a pre-experimental study, with a non-probabilistic demonstration, a repeated measures design was obtained to evaluate the effects of a brief program in patients with low back pain, on validated psychometric measures of pain, anxiety, depression, and catastrophizing, as well as autonomic physiological regulation. Heart rate and peripheral temperature. Results revealed a significant (p < .05) decrease in pain interference from mood, work, anxiety, depression, and catastrophizing, as well as an increase in peripheral temperature. This suggests that the treatment was effective in managing the affective problems of these patients, and consistent with the levels of physiological activation proposed by the Polyvagal Theory on the affective state.

Automatic Segmentation of Facial Regions of Interest and Stress Detection Using Machine Learning.

Stress is a factor that affects many people today and is responsible for many of the causes of poor quality of life. For this reason, it is necessary to be able to determine whether a person is stressed or not. Therefore, it is necessary to develop tools that are non-invasive, innocuous, and easy to use. This paper describes a methodology for classifying stress in humans by automatically detecting facial regions of interest in thermal images using machine learning during a short Trier Social Stress Test. Five regions of interest, namely the nose, right cheek, left cheek, forehead, and chin, are automatically detected. The temperature of each of these regions is then extracted and used as input to a classifier, specifically a Support Vector Machine, which outputs three states: baseline, stressed, and relaxed. The proposal was developed and tested on thermal images of 25 participants who were subjected to a stress-inducing protocol followed by relaxation techniques. After testing the developed methodology, an accuracy of 95.4% and an error rate of 4.5% were obtained. The methodology proposed in this study allows the automatic classification of a person's stress state based on a thermal image of the face. This represents an innovative tool applicable to specialists. Furthermore, due to its robustness, it is also suitable for online applications.

¿La Respuesta Psicofisiológica de Estrés-Relajación es la Misma en todas las Pacientes Sobrevivientes de Cáncer? / Is the Psychophysiological Stress-Relaxation Response the Same in all Cancer Survivors?

Resumen Un sobreviviente de cáncer padece continuamente manifestaciones autonómicas debidas a la enfermedad, su tratamiento oncológico, y el estrés psicológico con que se enfrenta continuamente. Una de las medidas psicofisiológicas utilizada para la valoración del estrés es la disminución de la temperatura periférica. En contraparte, los procedimientos psicológicos de relajación para el manejo de estrés buscan incrementar la temperatura. Sin embargo, se desconoce si esta respuesta es igual en todas pacientes. El objetivo de esta investigación fue examinar los cambios de temperatura durante un protocolo de estrés psicosocial y relajación en pacientes sobrevivientes de cáncer de mama. Adicionalmente, se evaluó el autorreporte de dolor y su interferencia con el funcionamiento psicosocial. Los resultados mostraron variaciones de temperatura periférica en las pacientes; sin embargo, no todas las pacientes presentaron el mismo patrón de temperatura, encontrando 3 subgrupos de pacientes, cuyas trayectorias lineales de temperatura permitieron generar un pronóstico afectivo para el manejo de estrés. Por autorreporte, no se encontraron diferencias psicosociales entre los subgrupos, aunque sí se encontró una asociación inversa entre la interferencia del sueño y la temperatura periférica. Se concluye que la temperatura periférica permite distinguir a las pacientes que se les dificulta el manejo del estrés psicosocial de aquellas que se benefician de los procedimientos psicológicos de relajación.

Abstract A cancer survivor continually suffers from autonomic manifestations due to the disease, their cancer treatment, and the psychological stress they continually face. One of the psychophysiological measures used to assess stress is the decrease in peripheral temperature. In contrast, psychological relaxation procedures for stress management seek to increase temperature. However, it is unknown if this response is the same in all patients. This research examined breast cancer survivors' temperature changes during psychosocial stress and relaxation protocol. Additionally, self-reported pain and its interference with psychosocial functioning were evaluated. The results showed peripheral temperature variations in the patients; however, not all patients presented with the same temperature pattern, finding three subgroups of patients whose linear temperature trajectories allowed generating an affective prognosis for stress management. By self-report, no psychosocial differences were found between the subgroups, although an inverse association between sleep interference and peripheral temperature was found. It is concluded that peripheral temperature distinguishes patients who find it challenging to manage psychosocial stress from those who benefit from psychological relaxation procedures.

Face Thermal Map of the Mexican Population in the Basal State.

There has been a wide use of thermal images of the human body in recent years, specifically images with thermal information of regions of interest (ROI) in the face; this information can be used for epidemiological, clinical, and/or psychological purposes. Due to this, it is important to have plenty of information on temperature in these ROIs in the basal state that allows their use as a reference in terms of their thermal analysis. In this work, a face thermal map of the Mexican population in the basal state (n = 196) is created, adding the comparison between different population groups, such as gender, age, and clinical status, obtaining results of great interest for future research. The t-test for independent samples was applied to the ROIs with normal distribution and Mann−Whitney u-test to the ones that did not present normal distribution. Statistically significant differences were found in some of the ROI comparisons like the corrugator, the supraorbitals, and the chin between the control and clinical groups, as well as in the differentiation by age (p < 0.05).

Terapia cognitivo-conductual grupal sobre la sintomatología depresiva-ansiosa y temperatura nasal en mujeres con cáncer de mama: Estudio piloto / Group cognitive-behavioral therapy on depressive-anxious symptoms and nasal temperature in women with breast cancer: A pilot study

OBJETIVO: Evaluar el efecto de una intervención cognitivo-conductual grupal sobre la sintomatología ansiosa-depresiva y el funcionamiento autonómico afectivo en mujeres con cáncer de mama. MÉTODO: Estudio pre-experimental con una muestra de 17 mujeres mexicanas con un nivel de depresión de moderada-severa y diagnóstico de cáncer de mama. Los instrumentos de evaluación fueron el Inventario de Depresión de Beck y la Escala de ansiedad de Hamilton; además de una evaluación del funcionamiento autonómico mediante el registro intra-sesión de la temperatura periférica nasal. RESULTADOS: Se observó una reducción de los síntomas de depresión (Z=-3.182, p = 0.001), ansiedad (Z=-2.697, p = 0.007) y un incremento de la temperatura al finalizar el tratamiento (Z=-2.669, p=008) que se mantuvo por seis meses (Z=-3.266, p = 0.001). CONCLUSIÓN: La terapia cognitivo conductual grupal fue eficaz para la reducción de la sintomatología ansiosa-depresiva y la regulación autonómica en el grupo de mujeres con cáncer de mama

OBJECTIVE: To assess the effect of a group cognitive-behavioral intervention on anxiety-depressive symptoms and autonomic affective functioning in women with breast cancer. METHOD: Pre-experimental study with a sample of 17 Mexican women with a moderate-severe depression level and a diagnosis of breast cancer. The assessment instruments were the Beck Depression Inventory and the Hamilton Anxiety Scale; in addition to an evaluation of autonomic affective functioning through intra-session recording of nasal peripheral temperature. RESULTS: A reduction in symptoms of depression (t=6.509, (12); p < 0.001, anxiety (Z=-2.697; p = 0.007) and an increase in temperature (Z=-2.669: p = 0.008) were observed at the end of treatment that was maintained for six months (t= -3.752, (15); p = 0.002). CONCLUSION: Group cognitive behavioral therapy was effective in reducing anxiety-depressive symptomatology and thermal psychophysiological regulation in the group of women with breast cancer

Physiological stressor impact on peripheral facial temperature, Il-6 and mean arterial pressure, in young people.

Nowadays, stress is part of everyday life, whose long-term effects can trigger health risks. Among the main alterations that occur in the human body we can find the variation of inflammatory activity, blood pressure, and facial peripheral temperature. The objective of this work is to show the facial thermal behavior for men and women, as well as the differences in vascular and inflammatory responses induced by the effect of acute social stress. The Trier Social Stress Test was applied to 15 women and 15 men, free of disease, with an average age of 23.8 years and a standard deviation of 5.52. After capturing the baseline state, and at the end of the test, the inflammatory activity was measured through salivary interleukin-6; the mean blood pressure, and the capture of facial thermographic images. For the thermal images, six regions of interest (biothermomarkers) were analyzed: forehead, right cheek, left cheek, chin, nose, and corrugator muscle. The results obtained after analyzing the information were: an increase in inflammatory activity, an increase in mean blood pressure, and significant temperature changes in different areas of interest of the face, depending on gender. For men, it only appeared in the region of the nose and women's forehead, cheeks, and nose. Furthermore, the correlation between the three variables (il-6, blood pressure, and temperature) was performed and no significant values were found. Regarding the relationship between genders, only significant values were found for il-6.

Effects of the Trier Social Stress Test on the distributions of IL-6 and MAP levels.

Trier Social Stress Test (TSST) is an experimental psychological test that induces changes in autonomic, endocrinological and immunological activity. Two measures used to evaluate the inflammatory activity induced by this test are the interleukin 6 (IL-6), a cytokine sensitive to changes in sympathetic nervous activity, and the mean arterial pressure (MAP), a measure sensitive to changes in autonomic activity. This study had two goals: first, the study examined whether TSST increases IL-6 and MAP levels; second, pre- and post-TSST IL-6 levels were compared for participants whose IL-6 levels increased or decreased due to the TSST. Saliva samples of IL-6 and MAP were taken from 42 participants clinically healthy, without psychiatric history, and data were analysed via quantile comparisons. The results showed that TSST did not lead to an increase in sympathetic activity as indexed by IL-6. Instead, TSST led to increases in MAP. Also, there were significant differences between the IL-6 distributions of people whose IL-6 levels changed from low to high (63%) and from high to low (37%) before and after the TSST. These findings suggest that the TSST will not have the same effect on all participants; that is, individual differences can be assessed using a biomarker to identify people with specialized psychological care needs.

Manipulating the Alpha Level Cannot Cure Significance Testing.

We argue that making accept/reject decisions on scientific hypotheses, including a recent call for changing the canonical alpha level from p = 0.05 to p = 0.005, is deleterious for the finding of new discoveries and the progress of science. Given that blanket and variable alpha levels both are problematic, it is sensible to dispense with significance testing altogether. There are alternatives that address study design and sample size much more directly than significance testing does; but none of the statistical tools should be taken as the new magic method giving clear-cut mechanical answers. Inference should not be based on single studies at all, but on cumulative evidence from multiple independent studies. When evaluating the strength of the evidence, we should consider, for example, auxiliary assumptions, the strength of the experimental design, and implications for applications. To boil all this down to a binary decision based on a p-value threshold of 0.05, 0.01, 0.005, or anything else, is not acceptable.

Biopsychosocial Assessment of Pain with Thermal Imaging of Emotional Facial Expression in Breast Cancer Survivors.

Background: Recent research has evaluated psychological and biological characteristics associated with pain in survivors of breast cancer (BC). Few studies consider their relationship with inflammatory activity. Voluntary facial expressions modify the autonomic activity and this may be useful in the hospital environment for clinical biopsychosocial assessment of pain. Methods: This research compared a BC survivors group under integral treatment (Oncology, Psychology, Nutrition) with a control group to assess the intensity of pain, behavioral interference, anxiety, depression, temperament-expression, anger control, social isolation, emotional regulation, and alexithymia and inflammatory activity, with salivary interleukin 6 (IL-6). Then, a psychophysiological evaluation through repeated measures of facial infrared thermal imaging (IRT) and hands in baseline-positive facial expression (joy)-negative facial expression (pain)-relaxation (diaphragmatic breathing). Results: The results showed changes in the IRT (p < 0.05) during the execution of facial expressions in the chin, perinasal, periorbital, frontal, nose, and fingers areas in both groups. No differences were found in the IL-6 level among the aforementioned groups, but an association with baseline nasal temperature (p < 0.001) was observable. The BC group had higher alexithymia score (p < 0.01) but lower social isolation (p < 0.05), in comparison to the control group. Conclusions: In the low- and medium-concentration groups of IL-6, the psychophysiological intervention proposed in this study has a greater effect than on the high concentration group of IL-6. This will be considered in the design of psychological and psychosocial interventions for the treatment of pain.

Efectos psicofisiológicos de la respiración diafragmática y la estimulación térmica sobre la actividad autonómica del estrés agudo / Psychophysiological effects of diaphragmatic breathing and thermal stimulation on the autonomic activity of acute stress

Resumen Estudios recientes han evaluado los efectos psicofisiológicos del estrés agudo, la respiración diafragmática (RD) y la estimulación térmica cutánea. El paradigma Trier Social Stress Test (TSST) se ha utilizado como prueba de laboratorio para inducir estrés; sin embargo, no cuenta con una fase de reversiva activa de los efectos que induce. La presente investigación tuvo dos objetivos: 1) evaluar el efecto de la RD sobre la actividad autonómica simpática y la respuesta inflamatoria después del TSST para revertir sus efectos cardiovasculares; y 2) explorar el efecto de la estimulación térmica para inhibir la actividad autonómica durante y después del TSST. Se utilizó un diseño cuasi-experimental de medidas repetidas para cada objetivo. Participaron 22 estudiantes universitarios, normotensos y clínicamente sanos divididos en dos subgrupos de 11 participantes cada uno. Se aplicaron medidas psicométricas de distrés psicológico (PHQ-4, PC-PTSD), se registró su presión arterial, su tasa cardiaca, su temperatura nasal y en el dedo de la mano izquierda, así como una muestra salival de interleucina 6 (citoquina asociada a procesos inflamatorios sensible a la alteración física y afectiva del organismo). Aunque se igualaron las características sociodemográficas, debido al horario de registro de la presión arteiral en cada grupo y el periodo escolar de cada participante, las muestras no fueron comparables entre sí por lo que los datos se analizaron por separado para cada objetivo: al primer grupo se le administró el protocolo de TSST y después se les instruyó un ejercicio de RD; mientras que el segundo grupo sostuvo con las manos una compresa térmica a una temperatura aproximada de 41°C durante y después del TSST. Los resultados sugirieron que la RD disminuyó la actividad autonómica, pero no la inflamatoria; mientras que el grupo con estimulación térmica inhibió la actividad autonómica durante y después del TSST. Estos hallazgos se discuten en el contexto de la Teoría Polivagal como estrategias psicológicas para disminuir e inhibir los efectos psicofisiológicos del estrés agudo.

Abstract Recent studies have evaluated the psychophysiological effects of acute stress, diaphragmatic breathing (DB) and cutaneous thermal stimulation. The Trier Social Stress Test (TSST) paradigm has been used as a laboratory test to induce stress; however, it does not have an active reversal phase of the effects it induces. The present investigation had two objectives: 1) to evaluate the effect of DB on autonomic activity and inflammatory response after TSST; and 2) explore the effect of thermal stimulation to inhibit autonomic activity during and after TSST. A quasi-experimental design of repeated measures was used for each objective. Twenty-two university students, normotensive and clinically healthy participated. Psychometric measures of psychological distress (PHQ-4, PC-PTSD) were applied, their blood pressure, heart rate, nasal temperature and on the finger of the left hand were recorded, as well as a salivary sample of interleukin 6 (inflammatory sensitive cytokine to the physical and affective alteration of the organism). They were divided into two sub-groups of 11 participants each. The first group he was administered the TSST protocol and then they were instructed an DB exercise; while the second group held with their hands a thermal compress at a temperature of about 41 ° C during and after the TSST. The results suggested that DR decreased autonomic activity, but not inflammatory activity; while the group with thermal stimulation inhibited the autonomic activity during and after the TSST. These findings are discussed in the context of the Polivagal Theory as psychological strategies to diminish and inhibit the psychophysiological effects of acute stress.

Transporte neonatal seguro en la población abierta del estado de Jalisco: impacto del programa S.T.A.B.L.E. en la morbilidad y mortalidad / Safe neonatal transport in Jalisco state: impact of S.T.A.B.L.E. program on morbidity and mortality

Introducción. El transporte neonatal desde las unidades médicas hasta las unidades de tercer nivel en muchos casos es desorganizado y arriesgado, situación que compromete aún más el estado de salud del neonato enfermo. El objetivo del estudio fue analizar el impacto del programa S.T.A.B.L.E. (de las siglas en inglés: Sugar and Safe care, Temperature, Airway, Blood, Lab work, Emotional support) en la morbimortalidad de los neonatos trasladados del interior del estado de Jalisco y de la zona metropolitana de Guadalajara, a la Unidad de Cuidados Intensivos Neonatales Externos (UCIN-EX) del Hospital Civil de Guadalajara. Métodos. Se diseñó un estudio prospectivo de 2005 a 2009. El proceso de intervención se basó en la aplicación del programa S.T.A.B.L.E. a todo neonato que requirió ser trasladado. Esto se logró con la intervención de los médicos reguladores del Sistema de Atención Médica de Urgencias (SAMU) del estado de Jalisco. Se implementó un curso de capacitación para el personal médico y paramédico de los centros de atención que refieren pacientes a nuestra unidad, con el fin darles a conocer el programa S.T.A.B.L.E. y su forma de aplicación. Resultados. Un total de 3,277 neonatos fueron incluidos en el estudio, 384 antes de implementar el programa y 2,893 con la aplicación del programa S.T.A.B.L.E. En el grupo con intervención se observó una frecuencia mayor de pacientes con temperatura corporal normal a su ingreso a la unidad receptora [516 (87%) vs. 227 (59%) p < 0.01 ], así como cifras de glicemia en rangos normales [690 (93%) vs. 173 (45%) p < 0.001]. La mortalidad durante el periodo de hospitalización en la unidad receptora fue menor en el grupo con intervención [405 (14%) vs. 84 (22%) p < 0.05]. Después del proceso de intervención, más pacientes fueron trasladados en incubadora [2,806 (97%) vs. 200 (52%) p < 0.001]; de igual forma, en más pacientes se aplicaron métodos de monitoreo de oximetría de pulso [2,575 (89%) vs. 235 (61 %) p < 0.01 ]. En cuanto al número de transportes neonatales regulados y autorizados por el sistema SAMU, se observó un incremento a favor del grupo con intervención [2,806 (97%) vs. 234(61%) p < 0.001]. La frecuencia de defunciones durante el transporte neonatal no presentó diferencias [30 (1 %) vs. 10 (2.6%) p = NS]. Conclusiones. El traslado de neonatos enfermos al tercer nivel de atención médica en el estado de Jalisco se realizó de forma segura, con una mejoría importante en la morbilidad. El programa S.T.A.B.L.E. fue altamente eficiente y de fácil aplicación. La disminución de la mortalidad de los pacientes con intervención del programa durante el periodo de hospitalización requiere estudios especialmente diseñados para establecer posibles asociaciones.

Background. Transporting newborn infants to third-level units is often disorganized, thus entailing several risks that may further compromise the health of newborn patients. Methods. A prospective study was designed in orderto assess the impact ofthe S.T.A.B.L.E. program (Sugarand Safe Care, Temperature, Airway, Blood, Lab work, Emotional support) from 2005 to 2009 in regard to morbidity and mortality rates of newborn patients who had to be transferred from other regions within Jalisco state or within Guadalajara's metropolitan area to the Neonatal Intensive Care Unit ofthe Civil Hospital in Guadalajara. The intervention process was based on applying the S.T.A.B.L.E. program to all newborns who needed to be transferred and was achieved with the intervention ofthe physicians regulating the Emergency Medical Assistance System (SAMU) of the state of Jalisco. A training course, as well as an educational brochure, was given to medical and paramedical staff from the medical assistance centers referring patients to our unit in orderto provide them with information on the S.T.A.B.L.E. program and its implementation. Results. A total of 3,277 newborn infants were included in the study, 384 before the intervention program and 2,893 once the S.T.A.B.L.E. program was implemented. Within the group transferred after the program's implementation, we observed a greater incidence of patients with normal body temperature upon admission to the receiving unit [516 (87%) vs. 227 (59%); p < 0.01 ] as well as with blood glucose figures within the normal range [690 (93%) vs. 173 (45%); p < 0.001]. Mortality during the hospitalization period in the receiving unit was lower in the group treated after the program's implementation [405 (14%) vs. 84 (22%); p < 0.05]. After the intervention process, more patients were transported in incubators [2,806 (97%) vs. 200 (52%); p < 0.001] and equally, pulse oximetry monitoring methods were applied in a greater number of patients [2,575 (89%) vs. 235 (61 %); p < 0.01 ]. With regard to the number of transfers of newborns that were regulated and authorized by the SAMU system, we also observed an increase in such numbers for the group treated after the intervention program [2,806 (97%) vs. 234 (61 %); p < 0.001]. There was no difference in the incidence of death during the newborns' transport [30 (1%) vs. 10 (2.6%); p = NS]. Conclusions. Transfer of ill newborns to third-level medical care units in the state of Jalisco was safely undertaken with a significant improvement in morbidity rates. The S.T.A.B.L.E. program was highly effective and easy to implement. The decrease in mortality during the hospitalization period of patients treated after the intervention program merits further studies especially designed to establish possible associations.

[Out-of-hospital delivery. Experience of ten years in Jalisco, Mexico]. / Parto fortuito. Experiencia de diez años en Jalisco, México.

BACKGROUND: Birth without medical assistance, or outs hospitals is defined as one that occurs without the optimal medical and health care conditions for mother and son pairing. Frequency of this phenomenon is not known in Mexico. OBJECTIVE: To observe clinical outcomes, morbidity, mortality, epidemiological and geographical patterns. MATERIAL AND METHOD: A retrospective study including newborns of mothers who have had deliveries without medical assistance in accidental conditions, admitted to Unidad de Cuidados Intensivos Neonatales Externos, Hospital Civil de Guadalajara Fray Antonio Alcalde (Mexico). From January 2000 to December 2009. RESULTS: In 4,762 (100%) neonatal records evaluated, 582 (12%) were newborns birth for deliveries out of hospital. 314 (54%) female and 268 (46%) male, first mother's gravidity 195 (33%) and second o more gravidity 387 (68%) were registered. The Hospital stay average was 3-day. Discharge diagnoses: healthy 463 (79%), neonatal sepsis 16 (4%), respiratory distress 35 (6%), jaundice 33 (6%), pneumonia 12 (2%), metabolic disorders 13 (3%), other diagnoses 10 (2%). Place of births: 366 Guadalajara metropolitan area (63%), state of Jalisco, 180 (31%) other states of the Mexican Republic 36 (6%). Lambed at home 117 (20%), 52 bath home (9%), toilet bowl 29 (5%), car 128 (22%), road 58 (10%), hospital admission 104 (18%), Ambulance 42 (7%) Other 52 (9%). CONCLUSION: In our study we observed that 79% of the newborns were healthy. They are the third leading cause of admission to Neonatal Intensive Care Unit External. The most common neonatal complications were solved without consequence. No neonatal mortality cases were founded.

Hijos de madres adictas con síndrome de abstinencia en Terapia Intensiva Neonatal / Neonatal abstinence syndrome in a Neonatal Intensive Care Unit

Introducción. En años recientes, se ha incrementado el consumo de drogas en mujeres mexicanas durante la gestación, surgiendo como entidad el síndrome del feto adicto y el síndrome de abstinencia en el neonato (SAN). Objetivo: caracterizar una muestra de neonatos, hijos de madres adictas a drogas ilícitas y que desarrollaron síndrome de abstinencia, así como conocer la respuesta terapéutica del fenobarbital en estos pacientes. Métodos. Se aplicó en forma prospectiva un cuestionario estructurado sobre la madre y el producto de todos los hijos de madres consumidoras de drogas ilegales que ingresaron a la Unidad de Cuidados Intensivos Neonatales Externos del Antiguo Hospital Civil de Guadalajara "Fray Antonio Alcalde" entre el 1 de enero de 2003 y el 20 de diciembre de 2007, por presentar SAN. Resultados. Noventa y dos neonatos desarrollaron SAN durante el período evaluado. La media de la edad materna fue de 22 años, con un bajo nivel educacional. La droga más utilizada por las madres fue la cocaína, y 10 de ellas resultaron VIH-positivas. La edad gestacional promedio fue de 37 semanas. El peso al nacer, la talla corporal y el conteo de Apgar promedios fueron de 2 600 g, 47 cm y 9 puntos, respectivamente. El síntoma más frecuente fue la irritabilidad (77% de la muestra), y en todos los casos el tratamiento con fenobarbital resultó adecuado para el control clínico de los síntomas y signos. Conclusiones. El SAN constituyó 3.5% del total de ingresos en nuestra institución durante un período de 4 años. En general, los neonatos mostraron cortejo sintomático similar al reportado previamente en la literatura. Se observó una alta incidencia de infecciones concurrentes -en particular, VIH- y un predominio de la cocaína y la marihuana como las drogas más consumidas por las madres. El tratamiento con fenobarbital resultó exitoso para el control de síntomas y signos en todos los casos. Dada su incidencia e importancia clínica, el uso de drogas durante el embarazo y sus consecuencias sobre el producto merecen un estudio más consistente e intensivo en México.

Introduction. To our knowledge, in spite of the increasing drug-abuse statistics in Mexican pregnant women, there are no published clinical researches approaching this issue in our country. We describe the characteristics of neonatal abstinent infants admitted in the Neonatal Intensive Care Unit (NICU) located at the Hospital Civil of Guadalajara. Objective: To describe the characteristics of a sample of neonatal abstinent children as well as the efficacy of phenobarbital as a pharmacological alternative. Methods. Children from drug dependent mothers who were admitted to NICU from January 1st 2003 to December 20th 2007 and developed the neonatal abstinence syndrome (NAS) were prospectively evaluated with a structured feedback form including parental data. Results. Ninety two NAS cases (3.5% of the total) were recruited in the assessed period. Mother's mean age was about 22 years with a low educational profile. The most common drug consumed by the mothers was cocaine (35%). Ten mothers had HIV-positive results, while the neonatal averaged gestational age was 37 weeks. Birth weight, corporal size and Apgar score mean values were 2 600 g, 47 cm and 9 points, respectively. The most common symptom was irritability in 77% of the patients. All the cases were treated with phenobarbital reaching a successful clinical remission of the symptoms. Conclusions. NAS represented the 3.5% of all the neonate patients admitted in NICU throughout 4 years. Our observations correspond to those previously reported in the literature. High incidence of concomitant infectious conditions was observed -especially HIV- and the predominant used drugs were cocaine and marijuana. Due to its high incidence and clinical relevance, drug-abuse during pregnancy ought to have further study in our country.

Veinte años de pruebas de función pulmonar con pletismografía corporal / Twenty years of testing pulmonary function with corporal plethysmography

Tradicionalmente la capacidad vital y las velocidades de los flujos espirados tanto en la curva de flujo volumen como en la espirometría cronometrada, han sido utilizadas en el estudio de la mecánica respiratoria. Los laboratorios de fisiología pulmonar del Instituto Mexicano del Seguro Social al igual que los del resto del Sector Salud, utilizan fórmulas de predicción de estos valores basados en lo reportado en la literatura general: sin embargo, no hay uniformidad respecto a cuáles utilizar. El objetivo de esta comunicación, es el de hacer un relato de la forma cómo en el laboratorio de Fisiología Cardiopulmonar del Hospital de Cardiología y Neumología del Centro Médico Nacional en 1979, se llevó a cabo un estudio de 400 sujetos clínicamente sanos y residentes en el Distrito Federal para la determinación de los valores de predicción de volúmenes y capacidades pulmonares, así como la forma de como se han tomado en cuenta dichos valores en este laboratorio y en el del Centro Médico Nacional de Occidente en Guadalajara. Los valores obtenidos fueron diferentes a los de la literatura general. Se exponen las fórmulas de predicción, las correlaciones que se han estado realizando con los estudios de mecánica respiratoria con pletismografía y gasometría, y se propone un estudio multicéntrico para la actualización de los valores de mecánica respiratoria