Lusitropy
Lusitropy
Lusitropy (pronounced: loo-si-tro-pee) is a term used in cardiology to describe the rate of relaxation of the heart during diastole. It is one of the components of cardiac function and is often used to assess the health of the heart.
Etymology
The term 'Lusitropy' is derived from the Greek word 'lusis', meaning 'loosening' or 'relaxation', and 'tropos', meaning 'turning'. It was first used in the medical field in the late 20th century.
Related Terms
- Inotropy: The force of heart muscle contraction.
- Chronotropy: The heart rate or rhythm.
- Dromotropy: The conduction velocity of the heart.
- Bathmotropy: The threshold for excitation in the heart.
Clinical Significance
Lusitropy is an important factor in the overall function of the heart. Abnormal lusitropy, such as decreased lusitropy, can lead to diastolic dysfunction, a condition where the heart does not fill with blood properly. This can result in symptoms such as shortness of breath and fatigue, and can lead to conditions such as heart failure.
Lusitropy can be affected by various factors, including age, disease, and certain medications. For example, beta-blockers are known to decrease lusitropy, while calcium channel blockers can increase it.
Measurement
Lusitropy can be measured using various techniques, including echocardiography, cardiac catheterization, and magnetic resonance imaging (MRI). These techniques can provide information about the rate and extent of relaxation of the heart, which can be used to assess cardiac function and diagnose heart conditions.
External links
- Medical encyclopedia article on Lusitropy
- Wikipedia's article - Lusitropy
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