Factores de riesgo asociados a traumatismo al nacimiento / Risk factors associated with birth trauma

ANTECEDENTES: Se define trauma al nacimiento las lesiones sufridas por el feto durante el trabajo de parto o expulsión. OBJETIVO: Identificar los factores de riesgo asociados a lesiones originadas durante el nacimiento en recién nacidos. MÉTODO: Estudio casos y controles, realizado en el período de julio/2004 a diciembre/2005, en la División de Ginecología y Obstetricia del Hospital General de Caxias do Sul/ Facultad de Medicina, Universidad de Caxias do Sul, RS, Brasil. Fueron analizadas variables maternas, del parto y fetales, utilizando el programa estadístico SPSS versión 19.0. Los factores que obtuvieron nivel significativo <0,10 en los análisis bivariado fueron insertas en la regresión logística. Se utilizó el modelo de entrada por bloques (block entry) para selección del modelo final de la regresión. RESULTADOS: En el período citado nacieron 2.137 infantes, 26 de ellos (1,2%) sufrieron trauma al nacimiento. La fractura de clavícula fue la lesión más frecuente (n=14; 53,8%), seguida del cefalohematoma (n=5; 19,2%). Las variables gasométricas no presentaron diferencia estadística. En la regresión logística, las únicas variables independientes asociadas a traumatismo al nacimiento fueron parto vaginal (OR-A: 11,08; IC95%: 2,45-49,98; p=0,002) y perímetro torácico >33 cm (OR-A: 3,36; IC95%: 1,35-9,73; p=0,010). CONCLUSIÓN: Los factores de riesgo asociados a lesiones durante el nacimiento involucran el parto vaginal y el perímetro torácico igual o superior a 33cm.

BACKGROUND: Obstetrics injuries can be defined as fetal lesions suffered by the fetus during labor or expulsion. OBJECTIVE: Identify risk factors for fetal birth trauma. METHOD: Case-control study conducted from July 2004 to December 2005. We analyzed maternal and fetal variables using software SPSS 19.0. The variables showing a significance level <0.10 in the bivariate analysis were included in the logistic regression analysis. We used the block entry model for selection of the final regression model. RESULTS: During these period, we identified 2137 births and 26 (1.2%) were related to fetal birth injury. Clavicle fracture was the most frequent injury (n = 14; 53.8%), followed by cephalohematoma (n = 5; 19.2%). Umbilical cord blood gas analysis did not show statistical significance. In the regression analysis of the variables that had significance level <0.10, the only independent variables associated with fetal birth injury were vaginal delivery (OR-A: 11.08; 95%CI: 2.45-49.98; p=0.002) and thorax circumference > 33 cm (OR-A: 3.36; 95%CI: 1.35-9.73; p=0.010). CONCLUSION: The risk factors for fetal birth injury were vaginal delivery and chest circumference equal to or larger than 33 cm. Other variables were not associated with the outcome in discussion.

Tocotraumatismo materno e fetal. Experiência de um hospital universitário nível III / Maternal and fetal birth injury: Experience in a tertiary referral university hospital

Introdução: Os tocotraumatismos maternos e fetais, por estarem diretamente vinculados à morbiletalidade, constituem tema importante na área perinatológica. Conhecer a real incidência desse evento torna-se importante para eventuais correções de condutas. O objetivo deste estudo foi identificar a prevalência e os tipos de tocotraumatismos materno e fetal na população usuária de um hospital universitário nível III. Métodos: Estudo de corte transversal, que envolveu gestantes no período de julho/2004 a dezembro/2005. Foram avaliadas variáveis maternas e neonatais. Utilizou-se o programa estatístico SPSS 16.0 para analisar as médias, desvios padrões e percentuais. Resultados: Em 2.137 nascimentos foram identificados 25 casos (1,2%) de tocotraumatismo fetal e 34 (1,6%) de tocotraumatismo materno. Dentre os tocotraumatismos fetais, a via de parto predominante foi a vaginal (88%) e a média da idade materna foi de 25,1±5,8 anos. O peso fetal médio foi de 3.366,4g±696,3g. As lesões leves foram as mais observadas (n=16; 64%). A fratura de clavícula foi o tocotraumatismo mais prevalente, seguido do céfalo-hematoma. Dentre os tocotraumatismos maternos, 33 nascimentos ocorreram via vaginal (97,1%) e a média da idade materna foi de 26,6±7,1 anos. O peso fetal médio foi de 3.152,9g ± 507,8g. As lesões mais observadas foram as de fúrcula vaginal (n=19; 55,9%). Conclusão: Dentre os casos de tocotraumatismo fetal (1,2%), as lesões do tipo leve e superficial foram as mais observadas, prevalecendo a fratura de clavícula. Dentre os casos de tocotraumatismos maternos (1,6%), as lacerações do 1.o e 2.o graus foram as mais prevalentes

Introduction: Because the maternal and fetal birth injuries are directly linked to morbidity/mortality, they are a major theme in the perinatal field. To get to know the real incidence of such events becomes important in order to correct any misconducts. The aim of this study was to determine the prevalence and the types of maternal and fetal birth injuries in the population cared for at a tertiary referral university hospital. Methods: A cross-sectional study involving pregnant women in the Jul/2004-Dec/2005 period. Maternal and neonatal variables were evaluated. Statistical software SPSS 16.0 was used in the analysis of means, standard deviations, and percentages. Results: Of 2.137 births, 25 cases (1.2%) of fetal and 34 (1.6%) cases of maternal birth injuries were reported. Among the fetal birth injuries, vaginal childbirth was the prevailing route of delivery (88%) and the mean maternal age was 25.1±5.8 years. The mean birth weight was 3.366.4g±696.3g. Minor lesions were the most prevalent ones (n=16; 64%). Fracture of the clavicle was the commonest injury, followed by cephalhematoma. Among the maternal birth injuries, 33 were through vaginal childbirth (97.1%) and the mean maternal age was 26.6±7.1 years. The mean birth weight was 3.152.9g±507.8g. The commonest injuries were those to the vaginal furcula (n=19; 55.9%). Conclusion: Among the cases of fetal birth injury (1.2%), minor, superficial lesions were the most frequent ones, with fracture of the clavicle prevailing. Among the maternal birth injuries (1.6%), 1st and 2nd degree lacerations were the most prevalent

Factores de riesgo asociados a traumatismo al nacimiento / Risk factors for birth injuries

Objective. To identify risk factors associated with birth trauma. Setting. Servicio de Neonatología, Hospital General "Dr. Manuel Gea González", Secretaría de Salud. Design. Case-control, prolective study. Patients. There were 129 cases and 134 controls. Measures. We recorded the following variables: a) maternal and delivery: age, weight, height, prenatal care, pre-existing disease or gestational disease, mode of delivery, anesthetic management during labor, use of external maneuvers or forceps; b) newborn: birth weight, gestational age, academic degree of attendant physician at delivery, and type of birth injury. Results. The independent risk factors associated to birth injury were: for ecchymoses; general anesthesia (OR 13.7, 95% CI - 3 - 62.6), breech presentation (OR 6.4, 95% IC 95% = 1.4 - 27.9) and gestational age < 32 weeks (OR 6.4, 95% CI = 1.3 - 31.1); for lacerations, vaginal dystocic delivery or cesarean section (OR 19, 95% CI = 4.4 - 81.1) and use of external maneuvers (OR 5.6, 95% CI = 1.5 - 21.6); for cephalhematoma maternal height < 1.54 m (OR 7.4, 95% CI = 2.3 - 23.7) and external maneuvers (OR 7.2, 95% CI = 2.3 - 23.7); for caput succedaneum, external maneuvers (OR 3.4, 95% CI = 1.5-7.7) and maternal age < 19 or > 36 years (OR 3.0, 95% CI = 1.4 - 6.4). Conclusions. Risk factors associated with birth injuries identified in this study involved maternal conditions, neonatal conditions and mechanism of delivery.

Objetivo. Identificar los factores de riesgo asociados a lesiones originadas durante el nacimiento en recién nacidos. Lugar. Servicio de Neonatología, Hospital General "Dr. Manuel Gea González", SS. Diseño. Casos y controles, prolectivo. Pacientes. 129 casos y 134 controles. Mediciones. Las variables estudiadas fueron, a) maternas y del parto: edad, peso, talla, control prenatal, enfermedad previa o durante el embarazo, características del trabajo de parto, tipo de anestesia, aplicación de maniobras externas, uso de fórceps; b) en el recién nacido: peso al nacer, edad gestacional, grado académico del médico que atendió el nacimiento y tipo de lesión. Resultados. Los factores que se asociaron en forma independiente a la presentación de traumatismo al nacimiento fueron para equimosis: anestesia general (RM 13.7, IC 95% = 3 - 62.6), presentación pélvica (RM 6.4, IC 95% = 1.4 - 27.9 y edad gestacional < 32 semanas (RM 6.4, IC 95% =1.3 - 31.1); para laceración, nacimiento vaginal distócico o cesárea (RM 19, IC 95% = 4.4 - 81.1), y maniobras externas (RM 5.6, IC 95% = 1.5 - 21.6); para cefalohematoma talla materna < 1.54 m (RM 7.4, IC 95% = 2.3 - 23.7) y maniobras externas (RM 7.2, IC 95% = 2.2 - 23.7); para caput succedaneum maniobras externas (RM 3.4, IC 95% = 1.5 - 7.7) y edad materna < 19 o > 36 años (RM 3.0, IC 95% = 1.4 - 6.4). Conclusiones. Los factores de riesgo asociados a lesiones durante el nacimiento identificados en este estudio involucran tanto características maternas como del recién nacido y de la atención del parto.

Pregnancy and birth complications in patients with schizophrenia in Trinidad and London

It has been shown that an excess of pregnancy and birth complications (PBCs) does not contribute to the excess rates of schizophrenia reported for the population of Caribbean origin in Britain compared with the native Caucasian British population. We therefore attempted to compare the rate of PBCs between a sample of schizophrenics in Britain with that of a sample from Trinidad where some of the Caribbean migrants to Britain originated. First contact patients with schizophrenia according to the CATEGO system diagnosis were identified in Trinidad and London. Their mothers, where available, were interviewed using the Lewis-Murray scale for pregnancy and birth complications. Data from Trinidad and Tobago concerning 56 patients were compared with those of the Caucasian (n = 61) and African-Caribbean (n = 50) patients in London. The rate of PBCs was similar for the Caucasian British patients (24.6) and the patients in Trinidad and Tobago (21.7). The rates were lowest in the African-Caribbean patients in London (14.0), though this difference was not statistically significant. These findings suggest that pregnancy and birth complications are a risk factor for a substantial minority of patients with schizophrenia in Trinidad and London. It also confirms that the excess rates of schizophrenia reported for the Caribbean population in Britain are not due to these complications

Risk factors for birth before arrival at Siriraj Hospital.

OBJECTIVE: To assess the potential risk factors for birth before arrival at Siriraj Hospital. STUDY DESIGN: Prospective case-control study. SETTING: Department of Obstetrics & Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University. SUBJECTS: The subjects were 320 patients who had delivered at Siriraj Hospital and were divided into two groups. One hundred and sixty patients, who gave birth before admission to the labor room of Siriraj Hospital, were assigned as the study group. The control group consisted of 160 patients who had normal deliveries in the labor room of Siriraj Hospital at the same period of time. INTERVENTION: Information was obtained by interviewing the patients. Both the interviewer and the subjects were blinded to each other. The data were analyzed by using logistic regression model and EpiInfo program. MAIN OUTCOME MEASURE: Information of antenatal care, socio-economic data, past obstetric history and present data of delivery. RESULTS: The six significant risk factors were identified; education level of the patients (odds ratio 6.11), past history of previous delivery (odds ratio 6.18), past history of preterm delivery (odds ratio 4.03), no antenatal care (odds ratio 8.55), unawareness of true labor symptoms (odds ratio 1.89) and present preterm delivery (odds ratio 2.99). CONCLUSION: The risk factors identified from this study were low education level, past history of previous delivery, past history of preterm delivery, no antenatal care, unawareness of symptoms of true labor and present preterm delivery. The risk factors from this study should have further study to get more information that can apply to control birth before arrival.

Forceps or vacuum extraction: a comparison of maternal and neonatal morbidity

To compare maternal and neonatal morbidity associated with forceps and vacuum delivery, data on 150 women delivered by forceps and 420 delivered by vacuum extraction between 1995 and 1999 at Queen Alia Hospital, Jordan were compared. Data included parity, gestational age, infant birthweight, Apgar score, presentation and station of fetal head, indications for forceps and vacuum deliveries, delivery success rate, and maternal and neonatal morbidity. Maternal birth canal and genital tract lacerations were significantly more common in forceps delivery, and there was significantly increased morbidity in infants delivered by vacuum extraction [caput, jaundice, cephalohaematoma]. Serious neonatal morbidity was rare for both groups

Bone injuries during delivery.

Bone injuries during the process of delivery were studied among 34, 946 live born babies over a 11 period. There were 35 cases of bone injuries giving an incidence of 1 per 1,000 live births. Clavicle was the commonest bone fractured (45.7%) followed by humerus (20%), femur (14.3%) and depressed skull fracture (11.4%) in the order of frequency. There was one case each of orbital fracture, epiphyseal separation of lower end of femur and dislocation of elbow joint. Lack of antenatal care, malpresentation often leading to obstructed labour and operative deliveries were found to be risk factors for bone injuries. Meconium stained liquor and birth asphyxia were more commonly associated with bone injuries than control cases. Cases with injuries had longer hospital stay and higher mortality. Improving the health infrastructure at the peripheral level with early identification of high risk mothers and their appropriate management can bring down the incidence of bone injuries.

Trauma obstétrico del neonato en el Hospital Civil de Guadalajara / Obstetrical trauma of the newborn infant at the Hospital Civil de Guadalajara

En el hospital Civil de Guadalajara en 1985 se analizaron 1,000 recién nacidos vivos de 32 semanas o más de gestación en los cuales se investigó trauma obstétrico (T.O.) 37.4% presentó un solo T. O., 2.8% presentó dos tipos de T.O. Los tipos de T.O. fueron: caput 307, hipoxia 55, huella de forceps 47, cefalohematoma 9, luxación de cadera 6, fractura de clavícula, parálisis braquial 1, parálisis facial 1 y fractura de cráneo 1. Las variables de mayor significancia estadística en su relación con el T. O. fueron: edad materna, paridad, apgar a los 5 minutos, uso de fórceps y líquido amniótico mecolos 5 minutos, uso de fórceps y líquido amniótico meconial (AL)