Vanessa R. Byams
Centers for Disease Control and Prevention
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Featured researches published by Vanessa R. Byams.
British Journal of Haematology | 2009
Peter A. Kouides; Vanessa R. Byams; Claire S. Philipp; Sidney F. Stein; John A. Heit; Andrea S. Lukes; Nyasha I. Skerrette; Nicole F. Dowling; Bruce L. Evatt; Connie H. Miller; Sally Owens; Roshni Kulkarni
The optimal management of menorrhagia among women with abnormal laboratory haemostasis is uncertain. In a crossover study, 116 women with menorrhagia [pictorial blood assessment chart (PBAC) score >100], negative gynaecological evaluation and abnormal laboratory haemostasis were randomly assigned to either intranasal desmopressin (IN‐DDAVP) or tranexamic acid (TA) therapy for two menstrual cycles. The subjects then crossed over to the second study drug for two additional cycles. Menstrual blood loss (MBL) was measured by PBAC scores at baseline and after each menstrual cycle. Quality of life (QOL) was assessed with four validated instruments. There was a statistically significant decrease in PBAC scores for both treatments. On average, the estimated decrease in the PBAC from baseline was −64·1 [95% confidence interval (CI) = −88·0, −40·3] for IN‐DDAVP and −105·7 (95% CI = −130·5, −81·0) for TA. The decrease in PBAC score was greater for TA than IN‐DDAVP (a difference of 41·6, P‐value = 0·0002, 95% CI = 19·6, 63·6). The test for treatment‐type effect was significant (P < 0·0001) suggesting a greater reduction in PBAC score with TA. Use of both IN‐DDAVP and TA improved QOL by all four instruments. We conclude that both medications reduced MBL and improved QOL among females with menorrhagia and abnormal laboratory haemostasis, but TA proved more effective.
Haemophilia | 2011
Vanessa R. Byams; Peter A. Kouides; Roshni Kulkarni; Judith R. Baker; Deborah Brown; Joan Cox Gill; Althea M. Grant; Andra H. James; Barbara A. Konkle; J. Maahs; M. M. Dumas; S. McALISTER; D. Nance; Diane J. Nugent; Claire S. Philipp; J. M. Soucie; E. Stang
Summary. Inherited bleeding disorders are especially problematic for affected girls and women due to the monthly occurrence of menstrual periods and the effects on reproductive health. Although heavy menstrual bleeding (HMB) is the most common manifestation, females with inherited bleeding disorders (FBD) experience other bleeding symptoms throughout the lifespan that can lead to increased morbidity and impairment of daily activities. The purpose of this article is to describe the utility of a female‐focused surveillance effort [female Universal Data Collection (UDC) project] in the United States Haemophilia Treatment Centres (HTCs) and to describe the baseline frequency and spectrum of diagnoses and outcomes. All FBD aged 2 years and older receiving care at selected HTCs were eligible for enrolment. Demographic data, diagnoses and historical data regarding bleeding symptoms, treatments, gynaecological abnormalities and obstetrical outcomes were analysed. Analyses represent data collected from 2009 to 2010. The most frequent diagnoses were type 1 von Willebrand’s disease (VWD) (195/319; 61.1%), VWD type unknown (49/319; 15.4%) and factor VIII deficiency (40/319; 12.5%). HMB was the most common bleeding symptom (198/253; 78.3%); however, 157 (49.2%) participants reported greater than four symptoms. Oral contraceptives were used most frequently to treat HMB (90/165; 54.5%), followed by desmopressin [1‐8 deamino‐D‐arginine vasopressin (DDAVP)] (56/165; 33.9%). Various pregnancy and childbirth complications were reported, including bleeding during miscarriage (33/43; 76.7%) and postpartum haemorrhage (PPH) (41/109; 37.6%). FBD experience multiple bleeding symptoms and obstetrical‐gynaecological morbidity. The female UDC is the first prospective, longitudinal surveillance in the US focusing on FBD and has the potential to further identify complications and reduce adverse outcomes in this population.
Haemophilia | 2011
Connie H. Miller; Claire S. Philipp; Sidney F. Stein; Peter A. Kouides; Andrea S. Lukes; John A. Heit; Vanessa R. Byams; Nicole F. Dowling; Roshni Kulkarni
Summary. While an estimated 13% of women with unexplained menorrhagia have von Willebrand disease (VWD), the frequency of other potential bleeding disorders has been uncertain. This study describes the relatively wide range of laboratory characteristics of women with unexplained menorrhagia and presents issues affecting diagnosis in this population. Women with pictorial blood assessment chart (PBAC) score >100 were identified at six U.S. sites and asked to remain drug free for 10 days prior to testing. Blood was collected on one of the first four menstrual cycle days and tested at a central laboratory for procoagulant factors, VWD and fibrinolytic factors. Platelet function testing by PFA‐100® (PFA) and platelet aggregation with ATP release (PAGG/ATPR) were performed locally using standardized methods. Among 232 subjects, a laboratory abnormality was found in 170 (73.3%), including 124 of 182 White (68.1%) and 34 of 37 Black (91.9%) subjects; 6.0% had VWD, 56.0% had abnormal PAGG/ATPR, 4.7% had a non‐VWD coagulation defect (NVCD) and 6.5% had an abnormal PFA only. AGG/ATPR was reduced in 58.9% of subjects, with multiple agonists in 28.6%, a single agonist in 6.1% and ristocetin alone in 24.2%. Frequencies of PAGG/ATPR defects varied by study site and race; frequencies of VWD and NVCD were similar. Laboratory abnormalities of haemostasis, especially platelet function defects, were common among women with unexplained menorrhagia across multiple U.S. sites. To what degree these abnormalities are clinically significant requires further study.
American Journal of Obstetrics and Gynecology | 2011
Claire S. Philipp; Ambarina S. Faiz; John A. Heit; Peter A. Kouides; Andrea S. Lukes; Sidney F. Stein; Vanessa R. Byams; Connie H. Miller; Roshni Kulkarni
OBJECTIVE The purpose of this study was to determine the usefulness of a simple screening tool for bleeding disorders in a multisite population of women with menorrhagia. STUDY DESIGN Women with menorrhagia between the ages of 18 and 50 years from 6 geographically diverse US centers underwent hemostatic testing for bleeding disorders, complete blood cell count, and ferritin. A questionnaire that contained all elements of the 8-question screening tool was administered. Sensitivity of the screening tool, a screening tool with a pictorial blood assessment chart (PBAC) score of >185, and a screening tool with serum ferritin were calculated for hemostatic disorders. RESULTS Two hundred and seventeen women who were identified with a PBAC score of ≥100 participated in the study. The sensitivity of the screening tool was 89% for hemostatic defects, and sensitivity increased to 93% and 95% with a serum ferritin level of ≤20 ng/mL and a PBAC score of >185, respectively. CONCLUSION This study confirms the usefulness of a short screening tool for the stratification of women with menorrhagia for hemostatic evaluation.
American Journal of Obstetrics and Gynecology | 2012
Vanessa R. Byams; Britta L. Anderson; Althea M. Grant; Hani K. Atrash; Jay Schulkin
OBJECTIVE To better understand the current evaluation of unexplained menorrhagia by obstetrician-gynecologists and the extent to which a bleeding disorder diagnosis is being considered in this population. STUDY DESIGN A total of 1200 Fellows and Junior Fellows of the American College of Obstetricians and Gynecologists were invited to participate in a survey on blood disorders. Respondents completed a questionnaire regarding their patient population and their evaluation of patients with unexplained menorrhagia. RESULTS The overall response rate was 42.4%. Eighty-two percent of respondents reported having seen patients with menorrhagia caused by a bleeding disorder. Seventy-seven percent of physicians reported they would be likely or very likely to consider a bleeding disorder as causing menorrhagia in adolescent patients; however, only 38.8% would consider bleeding disorders in reproductive age women. CONCLUSION The current data demonstrate that obstetrician-gynecologists seem to have a relatively high awareness of bleeding disorders as a potential underlying cause of menorrhagia.
Haemophilia | 2017
J. M. Soucie; S. D. Grosse; Azfar E Alam Siddiqi; Vanessa R. Byams; J. Thierry; M. M. Zack; A. Shapiro; N. Duncan
Health‐related quality of life (HRQoL) is reduced among persons with haemophilia. Little is known about how HRQoL varies with complications of haemophilia such as inhibitors and joint disease. Estimates of preference‐based HRQoL measures are needed to model the cost‐effectiveness of prevention strategies.
American Journal of Preventive Medicine | 2014
Michele G. Beckman; Mary M. Hulihan; Vanessa R. Byams; Meredith Oakley; Nimia Reyes; Sean Trimble; Althea M. Grant
Nonmalignant blood disorders currently affect millions of Americans, and their prevalence is expected to grow over the next several decades. This is owing to improvements in treatment leading to increased life expectancy of people with hereditary conditions, like sickle cell disease and hemophilia, but also the rising occurrence of risk factors for venous thromboembolism. The lack of adequate surveillance systems to monitor these conditions and their associated health indicators is a significant barrier to successfully assess, inform, and measure prevention efforts and progress toward national health goals. CDC is strengthening surveillance activities for blood disorders by improving and developing new methods that are tailored to best capture and monitor the epidemiologic characteristics unique to each disorder. These activities will provide a robust evidence base for public health action to improve the health of patients affected by or at risk for these disorders.
Journal of Womens Health | 2010
Vanessa R. Byams; Michele G. Beckman; Althea M. Grant; Christopher S. Parker
Bleeding and clotting in women is an issue that directly affects the life of every woman, child, and family worldwide. This article summarizes recent activities undertaken by the Division of Blood Disorders (DBD) at the Centers for Disease Control and Prevention (CDC) to identify risk factors through evidence-based research and surveillance to prevent complications of blood disorders in women. Specific focus is given to our efforts to improve early identification and diagnosis of blood disorders among women, improve our understanding of maternal and infant outcomes, and develop surveillance systems to monitor the prevalence and incidence of these events.
Haemophilia | 2018
Lakshmi V. Srivaths; Q. C. Zhang; Vanessa R. Byams; Jennifer E. Dietrich; Andra H. James; Peter A. Kouides; Roshni Kulkarni
Due to lack of patient/health care provider awareness causing delayed diagnosis, the bleeding phenotype and provider interventions in adolescents with heavy menstrual bleeding (HMB) and bleeding disorders (BD) may be different when compared to adults.
American Journal of Hematology | 2018
Marilyn J. Manco-Johnson; Vanessa R. Byams; Michael Recht; Becky Dudley; Brandi Dupervil; Diane Aschman; Meredith Oakley; Suzanne Kapica; Mariam Voutsis; Steven Humes; Roshni Kulkarni; Althea M. Grant
Vip Viprakasit , Amr Ajlan, Yesim Aydinok, Basim A. A. Al Ebadi, Hany Dewedar, Ahmed S. Ibrahim, Lamis Ragab, Omar Trad, Ahmed S. Wataify, Lily L. L. Wong, Ali T. Taher Division of Hematology and Oncology, Department of Pediatrics and Siriraj Thalassemia Center, Mahidol University, Bangkok, Thailand Radiology Department, King Abdulaziz University Hospital, Jeddah, Saudi Arabia Department of Pediatric Hematology and Oncology, Ege University Children’s Hospital, Izmir, Turkey Basra Centre for Hereditary Blood Diseases, Basra, Iraq Thalassemia Center, Hematology Unit, Dubai Health Authority, United Arab Emirates Radiodiagnosis Department, Ain Shams University, Cairo, Egypt Department of Pediatrics, Faculty of medicine, Cairo University, Cairo, Egypt Department of Oncology, Division of Hematology-Oncology, Tawam Hospital, Abu Dhabi, United Arab Emirates Babylon Center of Hereditary Blood Disorders, Babylon university, Babylon, Iraq Hematology Unit, Queen Elizabeth Hospital, Kota Kinabalu, Malaysia Department of Internal Medicine, American University of Beirut Medical Centre, Beirut, Lebanon