Extracting ππ\pi\pi SS-wave scattering lengths from cusp effect in heavy quarkonium dipion transitions

Charge-exchange rescattering $\pi^+\pi^-\to \pi^0\pi^0$ leads to a cusp effect in the $\pi^0\pi^0$ invariant mass spectrum of processes with $\pi^0\pi^0$ in the final state which can be used to measure $\pi\pi$ $S$-wave scattering lengths. Employing a non-relativistic effective field theory, we discuss the possibility of extracting the scattering lengths in heavy quarkonium $\pi^0\pi^0$ transitions. The transition $\Upsilon(3S)\to\Upsilon(2S)\pi^0\pi^0$ is studied in details. We discuss the precision that can be reached in such an extraction for a certain number of events.Comment: 15 pages, 7 figures, 1 tabl

Investigating the spectroscopy behavior of undetected 1F1F-wave charmed baryons

In this work, we investigate the spectroscopic properties of $1F$-wave charmed baryons, which have not yet been observed in experiments. We employ a non-relativistic potential model and utilize the Gaussian expansion method to obtain the mass spectra of these charmed baryons. Additionally, we focus on the two-body Okubo-Zweig-Iizuka allowed strong decay behaviors, which plays a crucial role in characterizing the properties of these baryons. Our comprehensive analyses of the mass spectra and two-body Okubo-Zweig-Iizuka allowed decay behaviors provides valuable insights for future experimental investigations. This study significantly contributes to our understandings of the spectroscopic properties of $1F$-wave charmed baryons.Comment: 10 pages, 2 figures, 9 tables. More references added. Accepted by Phys. Rev.

Thrombocytopenia during pregnancy: an institutional based prospective study of one year

Background: Platelets are non-nucleated cellular fragments of megakaryocytes, they play a critical role in haemostasis. Thrombocytopenia, defined as blood platelet count below 150.000/μL is the second leading cause of blood disorders in pregnancy after anemia. It complicates 7 to 10% of all pregnancies. Gestational thrombocytopenia explains 70-80% of all cases of thrombocytopenia in pregnancy. Hypertensive disorders account for approximately 20% and immune thrombocytopenic purpura for about 3-4%. Other etiologies are considered rare in pregnancy.Methods: The study was conducted in the tertiary institute over a period of one year, from January 2016 to December 2016. The samples of blood were collected from the Antenatal out-patient department and from indoor patients of the department of gynecology and obstetrics of the J.K. Hospital, Bhopal, Madhya Pradesh India.Results: Maximum number of patients had moderate degree of anemia around 58%. Most of the cases presented during 30-34 weeks of gestation. The most common etiology was gestational thrombocytopenia.Conclusions: Thrombocytopenia in pregnancy may occur secondary to a variety of causes. Most of these cases occur during specific periods of gestation. Management of pregnant women with platelet disorders requires a multidisciplinary approach and close collaboration between obstetric and hepatologist

Assessment of platelet profile of healthy volunteers in the trimesters of pregnancy in Benin City, Nigeria

These studies aimed at assessing platelet profile in the three trimesters of  pregnancy.Subjects were apparently healthy volunteers who were staff, students and antenatal patients of a Hospital in Benin. Platelet profile was assessed using Swelab Alfa Basic model Haematological Analyser (Boule Medical AB, Stockholm, Sweden). The results were presented as mean ± SEM in tables and graphs and analysed using One Way Analysis of Variance and Duncan post Hoc test and p < 0.05 was  considered significant. The study showed that platelet count x 103/μl (277.83 ± 36.33; first trimester > 193.60 ± 13.15; second trimester > 185.50 ± 11.58; third trimester) and plateletcrit in percentage (0.22 ± 0.03; first trimester > 0.17 ± 0.01; second trimester > 0.16 ± 0.01; third trimester) reduced progressively as pregnancy advanced and this was statistically significant (p < 0.05) when compared to control of 276.17 ± 34.32 x103/μl and 0.20 ± 0.20 respectively. A similar pattern was observed for Mean Platelet Volume (MPV). However, Platelet Width Density (PDW) in percentage increased (10.52 ± 0.22; first trimester < 13.44 ± 0.30; second trimester < 13.65 ± 0.41; third trimester) as pregnancy advanced. Thus PDW compensates for these reductions and a lack of this compensatory increase may aggravate the effect of thrombocytopenia in pregnancy.Platelet Count, Plateletcrit, Mean Platelet Volume, Platelet Distribution Width, Trimesters, Pregnanc

Platelet transfusion in pregnancy: clinical profile and pregnancy outcome

Background: Thrombocytopenia, being second important hematological disorder of pregnancy can result in maternal and neonatal morbidity and mortality in some women. Some of these disorders are not associated with adverse pregnancy outcomes while in others it is associated with maternal and neonatal morbidity and mortality. So this study was conducted to evaluate the various causes of thrombocytopenia associated with platelet transfusion and its effect on maternal and neonatal outcome.Methods: It is a retrospective data analysis of 70 peripartum women admitted in a tertiary level hospital with thrombocytopenia, requiring platelet transfusion over a period of 9 months (January 2013 to September 2013). Patients were analyzed for the cause of thrombocytopenia, requirement of platelet transfusion, additional treatment, duration of hospital stay and maternal and neonatal morbidity and mortality.Results: In this study, pre-eclampsia and HELLP was present in 37.1% (n=26) of women requiring platelet transfusion while obstetrical hemorrhage (APH, PPH and Rupture uterus), combined iron deficiency anemia and infective causes accounted for 27.1% (n=19), 17.1% (n=12) and 15.7% (n=11) of women respectively. One case each of APLA and idiopathic thrombocytopenia was seen. 70% of women had to stay in hospital for more than 5 days. Four women expired and the incidence of morbidities was 73.1%. Prematurity was present in 41.1% neonates and three expired in nursery. Neonatal morbidity and mortality was not affected by maternal thrombocytopenia.Conclusions: Thrombocytopenia associated with pathological conditions like HELLP, dengue and malaria were associated with profound maternal and neonatal morbidity

Gestational thrombocytopenia among pregnant Ghanaian women

Background: Thrombocytopenia is a common problem during pregnancy that is not frequently detected and as a result is often inappropriately managed. The obvious concern with thrombocytopenia during pregnancy is the risk of significant bleeding at the time of delivery. This study was designed to determine the prevalence of gestational thrombocytopenia in pregnant women reporting for ante-natal care at a Ghanaian primary health care centre. Methods: Platelet count was evaluated in 300 blood samples from pregnant women and 100 non pregnant female blood donors. The platelet counts were performed using Sysmex KX-21N automated hematology analyzer. The study design was cross sectional. Proportions were analyzed for statistical significance with the Chi square, Odds ratio was also calculated Results: The prevalence of thrombocytopenia in pregnant women in this study was 15.3% compared with 4% in controls. This was statistically significant with a P value of 0.003. Odds ratio was 4.31 (95% CI : 1.52 - 12.04). Most cases of thrombocytopenia were mild (76%), only 4% of the women with thrombocytopenia had severe thrombocytopenia. Conclusion: The frequency of thrombocytopenia in this study was higher than that reported from more developed parts of the world. This may be due to undetected malaria infection in our patients. Pregnant women should be routinely screened for thrombocytopenia. Those found to be thrombocytopenic should have both thick and thin blood films done to exclude the presence of malaria parasites.Pan African Medical Journal 2012; 12:3

Effect of severe gestational thrombocytopenia to perinatal outcome

Thrombocytopenia is a common hematologic abnormality during pregnancy. It may be a diagnostic and management problem, and has many causes, some of them specific to pregnancy. We considered all singleton deliveries after 24 weeks of gestation between 2007 and 2012 in our third level centre. Women with a platelet count <100 × 109/L, but who did not suffer from the aforementioned diseases, were considered to have incidental thrombocytopenia. The aim of this study is to investigate the incidences of moderate and severe gestational thrombocytopenia, to determine if the severity of maternal gestational thrombocytopenia affect perinatal outcome and to define if the severity of maternal gestational thrombocytopenia implicates the appearance of neonatal thrombocytopenia