Key takeaways
- In 1832, Thomas Latta of Leith, Scotland, gave intravenous salt water to dying cholera patients.
- His first patient briefly revived. Later patients survived, and he published his results in The Lancet.
- The idea faded for decades after his death. Good ideas still need champions.
Every bag of normal saline on your unit has an ancestor, and it was born in a cholera ward in a Scottish port town almost 200 years ago.
A disease that drained people dry
In the early 1830s, cholera swept from Asia into Europe. It killed by dehydration. Patients lost enormous amounts of fluid through diarrhea and vomiting, their blood thickened, their skin turned blue and cold, and many died within a day. The medical treatments of the time included bloodletting, which made things worse.
The idea
A young physician named William O'Shaughnessy studied the blood of cholera patients and found it had lost much of its water and salts. In early 1832, he proposed in The Lancet that the missing salts could be put back by injecting them into the veins. (O'Shaughnessy later had a fascinating career in India, and if you've read the book's extras you know where that story goes.)
Want the full technique, step by step? A Nurse's Guide to Intravenous Insertion covers it with photographed grips and real-world troubleshooting.
The doctor who tried it
Thomas Latta, a doctor in Leith, the port of Edinburgh, read the proposal and acted on it. In 1832 he infused a salt solution directly into the vein of an elderly woman who was close to death. In his account, roughly six pints went in over about half an hour, and she revived dramatically, sitting up and speaking. Tragically, her symptoms returned within hours and she died.
Latta kept going. With later patients, he gave more fluid, and some recovered. He reported his cases in The Lancet, and by his own estimate he saved about a third of patients who otherwise would have died. In an era with no germ theory, no sterile technique and no reliable equipment, that was astonishing.
Then medicine forgot
You'd think a treatment that brought dying people back would spread like wildfire. It didn't. A few reasons:
- Inconsistent results. Other doctors used different solutions, added odd ingredients, gave too little, or started too late.
- No infection control. Without sterile technique, some patients developed infections from the procedure itself.
- Resistance to new ideas. Many physicians still followed ancient theories of disease.
- Bad timing. The epidemic waned, and Latta himself died of tuberculosis in 1833.
Intravenous fluid replacement largely disappeared from practice for about half a century before being rediscovered and refined into the therapy we use every day.
Why this matters on your shift
It's easy to see an IV start as routine. But every flush, every bag, and every scrubbed hub is the end of a long chain of people who took risks, got it wrong, got it right, and got ignored. The infection control steps that feel tedious today exist because early IV therapy didn't have them.
Good ideas don't win on their own. They need someone willing to keep doing them right.
Want more stories like this? Part II of A Nurse's Guide to Intravenous Insertion covers the full history of IV therapy, from the first syringes to the nurses who built modern infusion practice.
References
- Hektoen International. Leith in the time of cholera: The story of Thomas Latta. hekint.org
- Latta, T. (1832). Letter on the treatment of cholera by copious saline injections. The Lancet.
This post is for education. Always follow your facility's policies and your scope of practice, and ask for help when you need it.