Mindblown: a blog about philosophy.
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Valvulotomy
The process of cutting through a valve.
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Valvulotome
An instrument for incising a valve.
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Percutaneous balloon valvuloplasty
The percutaneous insertion of one or more balloons across a stenotic heart valve. Inflating the balloons decreases the constriction. This technique has been used to treat mitral and/or pulmonic stenosis.
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Mitral balloon valvotomy
Expansion of a balloon in the orifice of a mitral valve as a means of treating mitral stenosis, instead of mitral valve replacement or commissurotomy.
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Valvectomy
Surgical excision of a valve, especially a heart valve.
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Reducing valve
A device to reduce the pressure of gas that has been compressed in a cylinder.
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Pyloric valve
The prominent circular membranous fold at the pyloric orifice of the stomach. A valve located at the pyloric end of the stomach, designed to stop food from flowing back from the duodenum into the stomach. This valve can become enlarged and blocked in a condition known as pyloric stenosis.
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Prosthetic heart valve
A substitute valve used to replace a diseased valve. There are two main types of prostheses: those made from biological tissues (e.g., the heart valves of animals, esp. pigs) and those made from biocompatible materials (e.g., metals or polymers). Biocompatible mechanical valves may be constructed in a variety of ways, e.g., from a ball that…
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Nasal valve
The site of greatest obstruction to airflow through the nasal passages. It extends from the bony cave near the piriform aperture into part of the cartilaginous vestibule of the nose. It is also known as the “internal nasal valve.”
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External nasal valve
The outermost opening of the nose (i.e., the alar rim).
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