john snow: pioneer of epidemiology
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In 1827, when he was 14, he obtained a medical apprenticeship with William Hardcastle in the area of John Snow was one of the first physicians to study and calculate dosages for the use of The use of chloroform as an anaesthetic for childbirth was seen as unethical by many physicians and even the There is no doubt that the mortality was much diminished, as I said before, by the flight of the population, which commenced soon after the outbreak; but the attacks had so far diminished before the use of the water was stopped, that it is impossible to decide whether the well still contained the cholera poison in an active state, or whether, from some cause, the water had become free from it.On proceeding to the spot, I found that nearly all the deaths had taken place within a short distance of the [Broad Street] pump.
A hand pump was located right on Broad Street, and Snow was immediately suspicious. The map of London below shows the areas of London supplied by these two water companies.Southwark & Vauxhall pumped water from a more downstream location that was clearly contaminated, and the rates of cholera were clearly higher in their customers compared to those supplied by the Lambeth Company. John Snow (15 March 1813 – 16 June 1858) was an English physician and a leader in the development of anaesthesia and medical hygiene.He is considered one of the founders of modern epidemiology, in part because of his work in tracing the source of a cholera outbreak in Soho, London, in 1854, which he curtailed by removing the handle of a water pump. It shows a water pump with its handle removed.
He remained there, as an assistant in a practice and colliery surgeon until his early twenties, when he moved south, first to Pateley Bridge, but reaching London in 1836, aged 23. She and some of her household died of cholera, the only cases in Hampstead that year.
In addition, over the next decade, with nearly fifty articles published in The Lancet, he acquired a reputation as an investigator, always seeking problems that required solutions.The first use of ether for anaesthesia in London, at which Snow was present, seems to have been a dental extraction, in December 1846. However, some months later an associate of Snow's stumbled upon the records of an infant who had died of diarrhea at the very beginning of the outbreak.
It seems that for childbirth he did not use an inhaler, but administered small quantities (less than 1ml) on to a handkerchief draped over the face, relieving pain but avoiding unconsciousness.
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