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Obstetrics is the field of study concentrated on pregnancy, childbirth and the postpartum period. [1] As a medical specialty , obstetrics is combined with gynecology under the discipline known as obstetrics and gynecology (OB/GYN), which is a surgical field.
In the 1840s, when Ignaz Semmelweis began his career in obstetrics, an expectant mother entering a maternity ward had a 10-20% chance of dying from this particular illness/complication. [20] For some areas in Europe the figure was greater with an estimated death rate as high as 30%. [ 22 ]
Obstetrics and gynaecology (also spelled as obstetrics and gynecology; abbreviated as Obs and Gynae, O&G, OB-GYN and OB/GYN [a]) is the medical specialty that encompasses the two subspecialties of obstetrics (covering pregnancy, childbirth, and the postpartum period) and gynaecology (covering the health of the female reproductive system ...
Also in 2016, Quizlet launched "Quizlet Live", a real-time online matching game where teams compete to answer all 12 questions correctly without an incorrect answer along the way. [15] In 2017, Quizlet created a premium offering called "Quizlet Go" (later renamed "Quizlet Plus"), with additional features available for paid subscribers.
An image from John Dalton's A New System of Chemical Philosophy, the first modern explanation of atomic theory.. This timeline of chemistry lists important works, discoveries, ideas, inventions, and experiments that significantly changed humanity's understanding of the modern science known as chemistry, defined as the scientific study of the composition of matter and of its interactions.
He also began work on the chemistry of glucose and related sugars. [101] In 1885, Eugen Goldstein named the cathode ray, later discovered to be composed of electrons, and the canal ray, later discovered to be positive hydrogen ions that had been stripped of their electrons in a cathode-ray tube; these would later be named protons. [102]
(The Center Square) – Out of the top 10 worst states to work in, four still continue to see some of the highest numbers of in-migration, data from a recent study and the 2024 U.S. Census Bureau ...
In the UK the Royal College of Obstetricians and Gynaecologists, based in London, encourages the study and advancement of both the science and practice of obstetrics and gynaecology. This is done through postgraduate medical education and training development, and the publication of clinical guidelines and reports on aspects of the specialty ...