【コラム】臨床に役立つ偉人たちの法則—Laplace，Hagen-Poiseuille，Bernoulli

Scientific laws useful for clinical practice discovered by great pioneers：Laplace, Hagen-Poiseuille, Bernoulli

William Oslerが語ったように，臨床家である我々は生理学・物理学に代表される科学を学び理解する必要がある。圧・張力・半径の関係を示したLaplaceの法則は管腔臓器に応用でき，流量・半径・粘度・長さ・圧の関係を示したHagen-Poiseuilleの法則は血流の理解や輸液療法に応用可能である。また流速・圧の関係を示したBernoulliの法則はCOPD患者に応用できる。偉大な先人たちにより発見された科学を理解することで，我々の臨床理解は深まるのである。

Sir William Osler said “The practice of medicine is an art, based on science.” We are medical practitioners, so we have to learn and understand science such as physiology and physics. Laplace's law which describes the relationship of pressure, tension, and radius may apply to organs with a lumen. The Hagen-Poiseuille law describes the relationship of flow, radius, viscosity, and pressure and may apply to blood flow and infusion therapy. Bernoulli's law which describes the relationship of velocity and pressure may apply to patients with COPD. Our clinical understanding is deepened by recognizing the science discovered by great pioneers.