Comparison of alternative gestational age assessment methods in a low resource setting: a retrospective study.

BACKGROUND: Accurate gestational age (GA) determination allows correct management of high-risk, complicated or post-date pregnancies and prevention or anticipation of prematurity related complications. Ultrasound measurement in the first trimester is the gold standard for GA determination. In low- and middle-income countries elevated costs, lack of skills and poor maternal access to health service limit the availability of prenatal ultrasonography, making it necessary to use alternative methods. This study compared three methods of GA determination: Last Normal Menstrual Period recall (LNMP), New Ballard Score (NBS) and New Ballard Score corrected for Birth Weight (NBS + BW) with the locally available standard (Ultrasound measurement in the third trimester) in a low-resource setting (Tosamaganga Council Designated Hospital, Iringa, Tanzania). METHODS: All data were retrospectively collected from hospital charts. Comparisons were performed using Bland Altman method. RESULTS: The analysis included 70 mother-newborn pairs. Median gestational age was 38 weeks (IQR 37-39) according to US. The mean difference between LNMP vs. US was 2.1 weeks (95% agreement limits - 3.5 to 7.7 weeks); NBS vs. US was 0.2 weeks (95% agreement limits - 3.7 to 4.1 weeks); NBS + BW vs. US was 1.2 weeks (95% agreement limits - 1.8 to 4.2 weeks). CONCLUSIONS: In our setting, NBS + BW was the least biased method for GA determination as compared with the locally available standard. However, wide agreement bands suggested low accuracy for all three alternative methods. New evidence in the use of second/third trimester ultrasound suggests concentrating efforts and resources in further validating and implementing the use of late pregnancy biometry for gestational age dating in low and middle-income countries.

Oropharyngeal exercises to reduce symptoms of OSA after AT.

PURPOSE: This study evaluated the efficacy of oropharyngeal exercises in children with symptoms of obstructive sleep apnea syndrome (OSA) after adenotonsillectomy. METHODS: Polysomnographic recordings were performed before adenotonsillectomy and 6 months after surgery. Patients with residual OSA (apnea-Hypopnea Index, AHI > 1 and persistence of respiratory symptoms) after adenotonsillectomy were randomized either to a group treated with oropharyngeal exercises (group 1) or to a control group (group 2). A morphofunctional evaluation with Glatzel and Rosenthal tests was performed before and after 2 months of exercises. All the subjects were re-evaluated after exercise through polysomnography and clinical evaluation. The improvement in OSA was defined by ΔAHI: (AHI at T1 - AHI at T2)/AHI at T1 × 100. RESULTS: Group 1 was composed of 14 subjects (mean age, 6.01 ± 1.55) while group 2 was composed of 13 subjects (mean age, 5.76 ± 0.82). The AHI was 16.79 ± 9.34 before adenotonsillectomy and 4.72 ± 3.04 after surgery (p < 0.001). The ΔAHI was significantly higher in group 1 (58.01 %; range from 40.51 to 75.51 %) than in group 2 (6.96 %; range from -23.04 to 36.96 %). Morphofunctional evaluation demonstrated a reduction in oral breathing (p = 0.002), positive Glatzel test (p < 0.05), positive Rosenthal test (p < 0.05), and increased labial seal (p < 0.001), and lip tone (p < 0.05). CONCLUSIONS: Oropharyngeal exercises may be considered as complementary therapy to adenotonsillectomy to effectively treat pediatric OSA.

Rewarming rate of hypothermic neonates in a low-resource setting: a retrospective single-center study.

Background: Hypothermic neonates need to be promptly rewarmed but there is no strong evidence to support a rapid or a slow pace of rewarming. This study aimed to investigate the rewarming rate and its associations with clinical outcomes in hypothermic neonates born in a low-resource setting. Methods: This retrospective study evaluated the rewarming rate of hypothermic inborn neonates admitted to the Special Care Unit of Tosamaganga Hospital (Tanzania) in 2019-2020. The rewarming rate was calculated as the difference between the first normothermic value (36.5-37.5°C) and the admission temperature, divided by the time elapsed. Neurodevelopmental status at 1 month of age was assessed using the Hammersmith Neonatal Neurological Examination. Results: Median rewarming rate was 0.22°C/h (IQR: 0.11-0.41) in 344/382 (90%) hypothermic inborn infants, and was inversely correlated to admission temperature (correlation coefficient -0.36, p < 0.001). Rewarming rate was not associated with hypoglycemia (p = 0.16), late onset sepsis (p = 0.10), jaundice (p = 0.85), respiratory distress (p = 0.83), seizures (p = 0.34), length of hospital stay (p = 0.22) or mortality (p = 0.17). In 102/307 survivors who returned at follow-up visit at 1 month of age, rewarming rate was not associated with a potential correlate of cerebral palsy risk. Conclusions: Our findings did not show any significant association between rewarming rate and mortality, selected complications or abnormal neurologic exam suggestive of cerebral palsy. However, further prospective studies with strong methodological approach are required to provide conclusive evidence on this topic.

Factors associated with mortality among asphyxiated newborns in a low-resource setting.

OBJECTIVE: Neonatal asphyxia accounts for a quarter of neonatal deaths. We aimed to assess factors associated with mortality among asphyxiated neonates in a low-resource setting. METHODS: A retrospective observational study evaluating all neonates who were admitted for asphyxia to the Neonatal Intensive Care Unit (NICU) at Tosamaganga Hospital (Tanzania) in 2017-2018. Inclusion criteria were: Apgar score <7 at 5 min and/or failure to initiate spontaneous breathing and/or presence of sentinel events and/or clinical signs suggesting encephalopathy not explained by other obvious factors or early convulsions. Newborns with congenital malformations, birth weight <2000 g or those who died in the delivery room were excluded. RESULTS: NICU admission for perinatal asphyxia was 17.5%. In 169 neonates, mortality rate was 23% and was associated with being outborn, low 5-minute Apgar score, depressed clinical status at NICU admission, occurrence of infection or seizures within 24 h from admission, and receiving aminophylline during the hospital stay. CONCLUSIONS: Perinatal asphyxia was responsible for a relevant proportion of NICU admissions and neonatal deaths in a low-resource setting. Appropriate clinical examination remains the main asset in settings with limited availability of diagnostic tools. Improvements in antenatal and perinatal care are needed to reduce mortality in asphyxiated newborns. Future studies should assess long-term outcome in survivors.

Impact of Quality Improvement Bundle on Neonatal Mortality in a District Hospital in Tanzania.

BACKGROUND: The poor quality of care received by mothers and neonates in many limited-resource countries represents a main determinant of newborn mortality. Small and sick hospitalized newborns are the highest-risk population, and they should be one of the prime beneficiaries of quality-of-care interventions. This study aimed to evaluate the impact on neonatal mortality of quality improvement interventions which were implemented at Tosamaganga Council Designated Hospital, Iringa, Tanzania, between 2016 and 2020. METHODS: A retrospective comparison between pre- and post-intervention periods was performed using the chi-square test and Fisher's exact test. Effect sizes were reported as odds ratios with 95% confidence intervals. RESULTS: The analysis included 5742 neonates admitted to the Special Care Unit (2952 in the pre-intervention period and 2790 in the post-intervention period). A decrease in mortality among infants with birth weight between 1500 and 2499 g (overall: odds ratio 0.49, 95% confidence interval 0.27-0.87; inborn: odds ratio 0.50, 95% confidence interval 0.27-0.93) was found. The analysis of cause-specific mortality showed a decrease in mortality for asphyxia (odds ratio 0.33, 95% confidence interval 0.12-0.87) among inborn infants with birth weight between 1500 and 2499 g. CONCLUSIONS: A quality improvement intervention was associated with decreased mortality among infants with birth weight between 1500 and 2499 g. Further efforts are needed to improve prognosis in very-low-birth-weight infants.

Relationship between Admission Temperature and Risk of Cerebral Palsy in Infants Admitted to Special Care Unit in a Low Resource Setting: A Retrospective Single-Center Study.

BACKGROUND: Deviations from normothermia affect early mortality and morbidity, but the impact on neurodevelopment of the survivors is unclear. We aimed to investigate the relationship between neonatal temperature at admission and the risk of cerebral palsy (CP) at one month of age in a low-resource setting. METHODS: This retrospective study included all inborn neonates admitted to the Special Care Unit of Tosamaganga Hospital (Tanzania) between 1 January 2019 and 31 December 2020. The neurological examination at one month of age was performed using the Hammersmith method. The relationship between the admission temperature and the risk of CP was investigated using logistic regression models, with temperature modeled as the non-linear term. RESULTS: High/moderate risk of CP was found in 40/119 (33.6%) of the neonates at one month of age. A non-linear relationship between the admission temperature and moderate/high risk of CP at one month of age was found. The lowest probability of moderate/high risk of CP was estimated at admission temperatures of between 35 and 36 °C, with increasing probability when departing from such temperatures. CONCLUSIONS: In a low-resource setting, we found a U-shaped relationship between the admission temperature and the risk of CP at one month of life. Expanding the analysis of the follow-up data to 12-24 months of age would be desirable in order to confirm and strengthen such findings.

Weaning of Children With Burn Injury by Noninvasive Ventilation: A Clinical Experience.

The aim of this study was to report the respiratory management of a cohort of infants admitted to a Pediatric Intensive Care Unit (PICU) over a 7-year period due to severe burn injury and the potential benefits of noninvasive ventilation (NIV). A retrospective review of all pediatric patients admitted to PICU between 2009 and 2016 was conducted. From 2009 to 2016, 118 infants and children with burn injury were admitted to our institution (median age 16 months [IQR = 12.2-20]); 51.7% of them had face burns, 37.3% underwent tracheal intubation, and 30.5% had a PICU stay greater than 7 days. Ventilated patients had a longer PICU stay (13 days [IQR = 8-26] vs 4.5 days [IQR = 2-13]). Both ventilation requirement and TBSA% correlated with PICU stay (r = .955, p < .0001 and r = .335, p = .002, respectively), while ventilation was best related in those >1 week (r = .964, p < .0001 for ventilation, and r = -.079, p = .680, for TBSA%). NIV was introduced in 10 patients, with the aim of shorten the invasive ventilation requirement. As evidenced in our work, mechanical ventilation is frequently needed in burned children admitted to PICU and it is one of the main factors influencing PICU length of stay. No difference was found in terms of PICU length of stay and invasive mechanical ventilation time between children who underwent NIV and children who did not, despite children who underwent NIV had a larger burn surface. NIV can possibly shorten the total invasive ventilation time and related complications.