Pregnancy outcome among adolescents and non-adolescents delivering at Kiambu Country Hospital, Kenya

Objective: To determine the pregnancy outcome among adolescents and non-adolescents.Design: A retrospective cross sectional study.Setting: Kiambu County Hospital, Kenya.Subjects: Three hundred and thirty six patients who delivered at Kiambu County Hospital.Main outcome measures: Maternal and foetal morbidity and mortality.Results: More adolescent were single and of lower level of education than the nonadolescents with a statistical significance of 0.025 and 0.031 respectively. Anaemia occurred in 16.0% of adolescents compared to 2.4% among the non-adolescents with a statistical significance of p(<0.001). Cepholopelvic Disproportion (CPD) occurred in 8% of the adolescents vs.1.6% among the non-adolescents vs. 1.6% among the non –adolescents with a statistical significance (P<0.018). Preterm deliveries occurred in 5.6% of the adolescents compared to 0.8% with a statistical significance of 0.031. Postpartum haemorrhage occurred in 7.2% of the adolescents compared to 0.8% of the non-adolescents with a statistical significance of P<O.O1. Puerperal sepsis occurred in 7.2% of the adolescent vs 1.6% among the non-adolescents (P<0.031). The mean birthweight of the adolescents was 2.9 kgs compared to 3.1 kgs with the difference being statistically significant with a P-value of 0.015.Conclusion: Socio-economic status was worse among the adolescents. Intra-partum complications like malpresentation, cephalopelvic disproportion and preterm deliveries were more common among the adolescents than the non-adolescents. Mean birth weight was lower for the adolescents. Post-partum complications like haemorrhage and sepsis were also more common in the group. Adolescent pregnancy is high risk and should be prevented but if it occurs, comprehensive antenatal follow-up is mandator

Performance of the ATLAS Detector using First Collision Data

More than half a million minimum-bias events of LHC collision data were collected by the ATLAS experiment in December 2009 at centre-of-mass energies of 0.9 TeV and 2.36 TeV. This paper reports on studies of the initial performance of the ATLAS detector from these data. Comparisons between data and Monte Carlo predictions are shown for distributions of several track- and calorimeter-based quantities. The good performance of the ATLAS detector in these first data gives confidence for successful running at higher energies

Measurement of the W -> lv and Z/gamma* -> ll production cross sections in proton-proton collisions at root s=7 TeV with the ATLAS detector

First measurements of the W → ℓν and Z/γ * → ℓℓ (ℓ = e, μ) production cross sections in proton-proton collisions at √ s = 7TeV are presented using data recorded by the ATLAS experiment at the LHC. The results are based on 2250 W → ℓν and 179 Z/γ* → ℓℓ candidate events selected from a data set corresponding to an integrated luminosity of approximately 320 nb-1. The measured total W and Z/ γ*-boson production cross sections times the respective leptonic branching ratios for the combined electron and muon channels are σtotW · BR(W → ℓν) = 9.96 ± 0.23(stat) ± 0.50(syst) ± 1.10(lumi) nb and σtotZ/γ* · BR(Z/ γ* → ℓℓ) = 0.82 ± 0.06 (stat) ± 0.05 (syst) ± 0.09 (lumi) nb (within the invariant mass window 66 < mℓℓ < 116 GeV). The W/Z cross-section ratio is measured to be 11.7 ± 0.9(stat) ± 0.4(syst). In addition, measurements of the W+ and W- production cross sections and of the lepton charge asymmetry are reported. Theoretical predictions based on NNLO QCD calculations are found to agree with the measurements