The role of multiple vessel doppler ultrasound in predicting neonatal outcome in pregnancy induced hypertension

Background: Hypertensive disorders are among the commonest medical disorders during pregnancy and continue to be a major cause of maternal and perinatal morbidity and mortality.Methods: In this study total 100 cases and their doppler findings were recorded, Cases of PIH between 20 - 36 weeks of gestation in 2 years with B.P ≥140/90 mm hg and protienuria ≥1+ in this prospective analytical study investigations and color doppler scanner for studying uterine, umbilical PI, RI and fetal middle cerebral arteries as the indicator to evaluate perinatal outcome.Results: Increase incidence of low birth weight (less than 2.5) observed in group of umbilical and uterine PI was (>1.5,>1 respectively)67% and 83%. Apgar score at 5 minutes 0.7, >0.6respectively) newborn delivered with weight less than 2.5 kg 76% and 80%, Apgar score at 5 minutes <7 33% and 80%, NICU admission 46% and 50%, perinatal mortality 60%and 42% more than that of with group of low RI. High rate of incidence seen where MCA PI < 1.3,90% newborns less than 2.5 kg birth weight,70% poor Apgar score at 5 minutes. abnormal ductus venosus group shows birth weight <2.5 kg 83%, Apgar at 5 minutes < 7 were 81%, NICU admission were 39%and perinatal mortalities 78% higher than normal ductus venosus group.Conclusions: The sensitivity of the Doppler significantly increased by studying multiple vessels (91.6%) of in the fetoplacental circulation. It would predict early compromise of blood supply to the fetus at the stage when the fetus is still not compromised and if timely measures are taken it helps in improvement of perinatal out-come

Correlation between changes in placental morphological features with abnormal Doppler flow in pregnancy induced hypertension

Background: Placenta is one of the most challenging organs; it is an instrument of transfer of essential elements, i.e. nutrients and oxygen from mother to fetus and waste product of metabolism in reverse manner.Methods: Cases of PIH between 20-36 weeks of gestation will be studied over a peri-od of 2 years having B.P ≥140/90mm Hg and protienuria ≥1+ in this prospective analytical study having color Doppler scanner with PI, RI of umbilical, uterine artery and middle cerebral artery PI along with placental morphological changes are observed.Results: In present study where, placental weight was 1 group. While 78% placental infarction, 57% calcification and 69% retroplacental clots be-longed to uterine artery RI > 0.6 group. Infarction were 77.50%, calcification were same as infarction 77.50% while retroplacental clots 80% in group having MCA PI 1.3.Conclusions: In recent years placenta has drawn attention as valuable indicator for maternal and fetal diseases in preeclampsia. Decreased circulation in placenta reflects on its morphological features and these changes causes alterations in Doppler flow velocities of uterine, umbilical and middle cerebral vessels pregnancy induced hyper-tension

The prediction of pregnancy induced hypertension from umbilical and uterine Doppler flow study

Background: Hypertensive disorder along with hemorrhage and infection contribute greatly to maternal mortality and morbidity. Pregnancy induced hypertension remains among the most significant and intriguing unsolved problems in obstetrics.Methods: In this prospective analytical study investigations and color doppler findings 0f umbilical artery PI, RI and end diastolic flow in same, uterine PI, RI and persistent diastolic notch in uterine artery recorded. Total 100 Cases of PIH between 20-36 weeks of gestation in 2 years with B.P ≥ 140/90 mm hg and protienuria ≥ 1+ were observed.Results: In this study, out of 100 cases, there were 58 cases of mild PIH (58%) and 42 cases of severe PIH (42%). Umbilical artery PI was elevated in 43(43.0%) patients and was normal in  57(57.0%) patients. Umbilical  artery RI was more than and equal to 0.7 in 77 patients  (77%) and was below of 0.7 in 23 (23%) pa-tients.9(9.0%)  fetuses showed  absence  and  14 (14.0%) fetus  had  reversal and 46 (46.0%) had reduced  end diastolic umbilical artery flow with total 69 out of 100  fetuses  having  abnormal  waveforms.65 (65%)  mothers  had  an  elevated  uterine  artery  PI   and  35(35%)  patients   had  normal uterine  artery PI. in observation 69 (69%)  patients  were  having  RI more  than 0.6, while 31 (31%) were having less than 0.6 out of 100 patients. In this study, 65 (65.0%) women were having persistent diastolic notch.Conclusions: This study was to evaluate arterial flow velocities as a predictor of impending pregnancy induced hypertension with raised RI and PI along with umbilical ab-sent or reverse end diastolic flow velocities and elevated RI and PI in the presence of a diastolic notch are considered as abnormal uterine doppler findings doppler finding with unfavorable outcome

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Absorbing aerosols: contribution of biomass burning and implications for radiative forcing

Absorbing aerosols supplements the global warming caused by greenhouse gases. However, unlike greenhouse gases, the effect of absorbing aerosol on climate is not known with certainty owing to paucity of data. Also, uncertainty exists in quantifying the contributing factors whether it is biomass or fossil fuel burning. Based on the observations of absorption coefficient at seven wavelengths and aerosol optical depth (AOD) at five wavelengths carried out at Gadanki (13.5&#176; N, 79.2&#176; E), a remote village in peninsular India, from April to November 2008, as part of the "Study of Atmospheric Forcing and Responses (SAFAR)" pilot campaign we discuss seasonal variation of black carbon (BC) concentration and aerosol optical depth. Also, using spectral information we estimate the fraction of fossil-fuel and nonfossil fuel contributions to absorption coefficient and contributions of soot (Black Carbon), non-soot fine mode aerosols and coarse mode aerosols to AOD. BC concentration is found to be around 1000 ng/m3 during monsoon months (JJAS) and around 4000 ng/m3 during pre and post monsoon months. Non-fossil fuel sources contribute nearly 20% to absorption coefficient at 880 nm, which increases to 40% during morning and evening hours. Average AOD is found to be 0.38&#177;0.15, with high values in May and low in September. Soot contributes nearly 10% to the AOD. This information is further used to estimate the clear sky aerosol direct radiative forcing. Top of the atmosphere aerosol radiative forcing varies between -4 to 0Wm-2, except for April when the forcing is positive. Surface level radiative forcing is between -10 to -20Wm-2. The net radiation absorbed within the atmosphere is in the range of 9 to 25Wm-2, of which soot contributes about 80 to 90%

Airborne lidar study of the vertical distribution of aerosols over Hyderabad, an urban site in central India, and its implication for radiative forcing calculations

Use of a compact, low power commercial lidar onboard a small aircraft for aerosol studies is demonstrated. A Micro Pulse Lidar fitted upside down in a Beech Superking aircraft is used to measure the vertical distribution of aerosols in and around Hyderabad, an urban location in the central India. Two sorties were made, one on 17 February 2004 evening hours and the other on 18 February 2004 morning hours for a total flight duration of four hours. Three different algorithms, proposed by Klett (1985), Stephens et al.&amp;nbsp;(2001) and Palm et al.&amp;nbsp;(2002) for deriving the aerosol extinction coefficient profile from lidar data are studied and is shown that the results obtained from the three methods compare within 2%. The result obtained from the airborne lidar is shown more useful to study the aerosol distribution in the free troposphere than that obtained by using the same lidar from ground. Using standard radiative transfer model the aerosol radiative forcing is calculated and is shown that knowledge on the vertical distribution of aerosols is very important to get more realistic values than using model vertical profiles of aerosols. We show that for the same aerosol optical depth, single scattering albedo and asymmetry parameter but for different vertical profiles of aerosol extinction the computed forcing values differ with increasing altitude and improper selection of the vertical profile can even flip the sign of the forcing at tropopause level

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Aerosol characteristics and aerosol radiative forcing over Maitri, Antarctica

During the 20th Indian Antarctic expedition conducted in January-February 2001, a detailed study on the aerosol spectral optical depth, mass concentration and size-distribution along with columnar ozone and watervapour concentrations was made from the Indian station, Maitri (70.77&#176; S, 11.73&#176; E). A low aerosol optical depth of about 0.03 at 400 nm wavelength and a dry aerosol mass concentration of about 7 &#181;g/m3 for the PM10 particles are found for this anthropogenically least-affected continent on the earth. The aerosol sizedistribution reveals that about 63% of the total aerosol mass comes from particles of size greater than 1 &#181;m, which are of mainly natural origin. Average columnar ozone and total precipitable water-vapour content during the observation period were found to be 271.6 DU and 0.147 cm respectively, and the observed day-to-day variations are explained using air back-trajectory analysis. Estimation of aerosol radiative forcing over Maitri reveals a positive forcing of 0.95 W/m2 at the top of the atmosphere and -0.83 W/m2 at the surface. Using model calculations, it is shown that these forcing values can have large annual variation both in magnitude and sign due to variation in the sun-earth geometry, typical of a polar region, even if we assume a constant aerosol amount throughout the year

Using Real?time Monitoring to Enhance Graduation from Extreme Poverty in Bangladesh

The total eradication of extreme poverty is a primary focus of the post?Millennium Development Goal (MDG) agenda. Whilst the term ‘graduation’ is contentious, in this article it is used to refer to the transition of households or individuals out of extreme poverty. Graduation programmes commonly focus on asset transfer to establish a productive micro?enterprise. To operationalise a 100 per cent graduation creates an imperative for programmes to focus on all of their beneficiaries, in particular the very poorest. The combination of smartphones and internet connectivity provides the building blocks of a system that can track the current status of all programme participants and provide frequent and up?to?date census?level information, enabling timely adaptation of interventions. EEP/Shiree, an extreme poverty reduction programme in Bangladesh, has adopted this approach. This article provides evidence from the roll?out of this system and its potential contribution to the practical realisation of the ‘leave no one behind’ objective

Prediction Based Efficient Resource Provisioning and Its Impact on QoS Parameters in the Cloud Environment

The purpose of this paper is to provision the on demand resources to the end users as per their need using prediction method in cloud computing environment. The provisioning of virtualized resources to cloud consumers according to their need is a crucial step in the deployment of applications on the cloud. However, the dynamical management of resources for variable workloads remains a challenging problem for cloud providers. This problem can be solved by using a prediction based adaptive resource provisioning mechanism, which can estimate the upcoming resource demands of applications. The present research introduces a prediction based resource provisioning model for the allocation of resources in advance. The proposed approach facilitates the release of unused resources in the pool with quality of service (QoS), which is defined based on prediction model to perform the allocation of resources in advance. In this work, the model is used to determine the future workload prediction for user requests on web servers, and its impact toward achieving efficient resource provisioning in terms of resource exploitation and QoS. The main contribution of this paper is to develop the prediction model for efficient and dynamic resource provisioning to meet the requirements of end users