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Background: Covid-19 pandemic had been a disastrous catastrophe on human race affecting different groups of population differently. Pregnancy is a condition which too has been affected by Covid-19. The present study aims to examine the research productivity of Covid-19 and pregnancy. Methods: Keywords pertaining to "Covid-19" and "Pregnancy" were used in search string in Scopus database for the period 2020-21. Data regarding publications growth, productive countries, authors and institutions, high cited papers and significant keywords was retrieved to analyze results. Results: The search retrieved 2945 global publications for the period 2020-21. The USA, UK and China were the most productive countries (with 28.96%, 11.27% and 9.3% global share) on "Covid-19 and Pregnancy". The 613 organizations and 953 authors participated in global research on the subject, with top 20 most productive organizations and authors contributing 26.38% and 9.68% global publication share and 53.64% and 38.53% global citation share respectively. Huazhong University of Science and Technology, China, Tongji Medical College, China and Harvard Medical School, USA were the most productive organizations (with 68, 64 and 52 publications) and Huazhong University of Science and Technology, China (45.88 and 2.12), Tongji Medical College, China (44.96 and 2.08) and University of Health Sciences, Turkey (22.38 and 1.03) led the world as most impactful organizations in terms of citation impact and relative citation index. A Khalil (23 papers), C. Gyamfi-Bannerman (19 papers) and D. Goffman and I.C. Poon (17 papers each) were the most productive authors and H. Yang (197.4 and 4.66), l. Feng (105.12 and 2.5) and D.A. Schwartz (74.82 and 1.77) were the most impactful authors. American Journal of Obstetrics and Gynecology (94 papers), International Journal of Obstetrics and Gynecology (85 papers) and European Journal of Obstetrics and Gynecology and Reproductive Biology (66 papers) were the most productive journals in global research on "Covid-19 and Pregnancy". JAMA-Journal of the American Medical Association (45.52), Acta Obstetricia et Gynecologica Scandinavica (34.22) and Ultrasound in Obstetrics and Gynecology (25.95) were leading most impactful journals. The 61 (2.07%) out of 2945 global publications on "Covid-19 and Pregnancy" registered 102 to 1571 citations per paper and they together received 14620 citations averaging 239.67 citations per paper. These 61 publications are assumed as high cited publications and involve 153 authors, 116 organizations and published in 43 journals. [ABSTRACT FROM AUTHOR]

Background: Many patients with Covid-19 have underlying cardiovascular disease or develop acute cardiac injury during the course of the illness. Adequate understanding of the interplay between Covid-19 and Cardiovascular disease is required for optimum management of these patients. The study analyzed and evaluated the global publication output on "Covid-19 and Heart Diseases" to find out the current trends and present status of research, by identifing important countries, organizations, authors and journals and important topics and keywords from the global publications, using bibliometric methods. Methods: Relevant published literature from December 2019 to August 2021 were identified and analyzed on the topic "Covid-19 and Heart Diseases" using a well-defined search strategy in Scopus database. A list of keywords were identified for Covid-19 ("Covid 19" or "2019 novel Coronavirus" or "Coronavirus 2019" or "Coronavirus disease 2019" or "2019-novel CoV" OR "2019 ncov" or "Covid 2019" or "Covid19" or "Corona virus 2019" or "ncov-2019" or "ncov2019" or "nCoV 2019" or "2019-ncov" or "covid-19" or "Severe acute respiratory syndrome coronavirus 2" or "SARS-CoV-2") and Heart Diseases (cardi* or arrhythmia or myocardial* or heart*) and these keywords are used for search in "Keywords" and Title" tags of Scopus database, yielding 5298 records. Results: A total of 5298 relevant publications indexed in Scopus database were obtained on "Covid-19 and Heart Disease", which received 62459 citations, averaging 11.79 citations per paper. The total publications witnessed the participation of 123 countries, with USA, Italy, U.K. and China leading in global publication productivity (with 1757, 707, 551 and 413 papers) and China (35.31 and 2.99), France (23.01 and 1.95), Germany (23.0 and 1.95) and Italy (20.43 and 1.73) leading in citation impact per publication and relative citation index. The 1761 organizations and 2499 authors participated in these 5298 publications. Harvard Medical School, USA, Brigham and Women's Hospital, USA and Massachsetts General Hospital leads in publications productivity (with 178, 92 and 92 publications each) and New York Presbyterian Hospital, USA (121.53 and 10.31), Tongji Medical College, China (65.65 and 5.57) and Huazhong University of Science and Technology, China (65.41 and 5.55) leads in citations impact per paper and relative citation index. M. Metra, A. Harky and M.K. Chung leads in publications productivity (with 23, 22 and 153 papers each) and G.Y.H. Lip (U.K.)(114.67 and 9.73), A.J. Kirtane (USA)(109.67 and 9.3) and M. Metra (Italy)(87.04 and 7.38) leads in citations impact per publication and relative citation index. European Heart Journal, Circulation and Stroke leads in publication productivity (with 85, 81 and 73 publications) and JAMA Cardiology (154.23), Journal of the American College of Cardiology (54.99) and Circulation (43.54) leads in citation impact per paper. Major keywords appearing along with "Covid-19 and "Heart Diseases" in co-occurnces were "Cardiovascular Disease" (1176), "Heart Failure" (802), "Hypertension" (664), "Cerebrovascular Accidents" (659), "Stroke" (608), "Mycarditis" (511), "Heart Arrhytthrmia"(464), etc. Conclusion: The study presents the current trends and status of research in the field and indicate the important keywords where research is focused in global literature on cardiovascular manifestations in Covid-19 patients. Such a analysis tmay be useful to the research community and decision-makers to prioritize research needs and identify leading Covid-19 researchers, countries, institutes and authors. [ABSTRACT FROM AUTHOR]

The paper presents a analysis of quantitative and qualitative dimensions of global research output (3488 records) on "Impact of COVID-19 on Children and Adolescents", based on indexed publications in Scopus database. The global publications on this theme averaged 8.31 citations per paper. About 1.49% share of its total publications in this area received external funding support. The 145 countries partcipitated in global research output on "Impact of COVID-19 on Children and Adults", of which the top 10 countries accounted for 85.21% and more than 100% share of global publications and citations. The USA, U.K. and Italy leads in global publications ranking and productivity as against China (3.16), U.K (1.28) and USA (1.27) leading in terms of relative of relative citation index. The 412 organizations and 661 authors participated in global research on this theme, with top 15 most productive organizations and authors contributing 21.07% and 4.30% global publications share and 38.05% and 12.98% global citations share. Harvard Medical School, USA, Huazhong University of Science and Technology, China and Tongji Medical College, China leads the world as the most productive organizatons (with 480, 67 and 63 publications) and Huazhong University of Science and Technology, China (31.97 and 3.85), Tongji Medical College, China (19.92 and 2.40) and Children Hospital of Philadelphia, USA (19.30 and 2.32) leading as the most impactful organizations in the world in terms of citation per paper and relative citation index. D.Buonsensov, C.Calvo and X. Lu were the most productive authors (with 15, 12 and 12 papers) and X.Lu (103.83 and 12.49), A. Licari ( 40.11 and 4.83) and G.L. Marseglia( 34.09 and 4.1) were the most impactful authors. JAMA Pediatrics, Pediatrics Infectious Disease Journal and Acta Paediatrica International Journal of Pediatrics were the most productive journals (with 71, 60 and 58 papers) and Pediatrics (36.59, JAMA Pediatrics (19.49) and Acta Paediatrica International Journal of Pediatrics (14.93) were the most impactful journals. [ABSTRACT FROM AUTHOR]