Ludwig's Kymograph
accurate readings on the manometer (i.e. Utube). Nevertheless, he was successfully able to
measure the first blood pressure recordings (Fig
2).
Fig 1. Kymograph
Fig 2. Blood pressure recordings from the dog
case.
In 1847, Carl Ludwig, a German professor of
physiology, is best known for his study of the
References:
cardiovascular system and his invention of the
Bronswijk Von, P., Cohen, A. “The first
Ludwig Kymograph—”a wave writer.” His
recordings of pharmacological effects.”
kymograph (Fig 1) and manometer was used to
British Pharmacological Society. 2008 Nov;
record changes in invasive blood pressure
66(5): 588–593.
during an animal case—a dog. The anesthetized http://www.ncbi.nlm.nih.gov/pmc/articles/PMC26
animal had a a mercury filled manometer
inserted using a catheter directly into the artery
of the dog. Due to continuous fluctuations,
Ludwig experienced difficulties obtaining
61974/
Sutherland, S. “Notes of Lectures on Human
Physiology.” Cornell University. Volume 3. Pg
91. www.googlebooks.com