Sydney Ringer's demonstration that calcium is essential for cardiac muscle contraction fundamentally altered the biological sciences, establishing the necessity of ionic balance in living organisms. A British physician, physiologist, and pharmacologist, he bridged the gap between laboratory research and clinical bedside practice, leaving a legacy that persists in modern medical treatments through the widespread use of physiological saline solutions.
Formative Years and Education
Born in 1835 in Norwich, Ringer experienced personal loss early when his father died in 1843. He attended a Baptist school in Norwich before beginning practical medical training in September 1853 at the Norfolk & Norwich Hospital under surgeon B. H. Norgate. In 1854, he matriculated at University College London, graduating in 1860. His background as a nonconformist placed him outside the established educational norms of the era, yet he rose through the ranks of University College Hospital to become a full physician by 1866.
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Ringer maintained a deep connection to University College London throughout his career, holding various professorial chairs. He served as professor of materia medica from 1862 to 1878, then as professor of the Principles and Practice of Medicine until 1887. He concluded his tenure as the Holme Professor of Clinical Medicine, serving in that capacity until 1900. Alongside his university duties, he worked as an Assistant Physician at the Great Ormond Street Hospital for Children between 1865 and 1869 and authored the widely read Handbook of Therapeutics, which reached 14 editions.
Physiological Discoveries
Working within University College’s Department of Physiology, Ringer conducted his most significant research into ionic composition. By observing the spontaneously beating frog heart, he determined that extracellular calcium was strictly required to maintain contraction. This discovery provided the foundation for Ringer's solution, a mixture of sodium, potassium, and calcium chloride salts. This work laid the groundwork for future clinical derivatives, including Ringer's lactate, frequently employed in modern emergency and surgical care.
Fast facts
- Born: 1835, Norwich
- Died: 1910, Lastingham, Yorkshire
- Education: University College London
- Major Work: Handbook of Therapeutics (1869)
- Professional Recognition: Fellow of the Royal Society (1885)
- Academic Roles: Holme Professor of Clinical Medicine
- Citizenship: United Kingdom of Great Britain and Ireland
Questions readers ask
What is Ringer's solution?
It is a physiological saline solution composed of sodium, potassium, and calcium salts, designed to match the ionic requirements of living tissue.
Why was his discovery regarding calcium important?
It revealed that calcium is essential for cardiac muscle contraction, proving that specific ions are necessary for cellular physiological processes.
Achievements
- Fellow of the Royal Society
- Held posts at University College London
- Fields: medicine, pharmacology and physiology
