... bpm is the number of beats per minute (bpm). Tocodynamometers are available in two types: external (measured from above the abdominal wall) that convert the mechanical displacement into electrical energy and measure the strength of labor pains by detecting the hardening, swelling, and deformation of the uterine wall caused by labor pains, i.e. uterine contractions, and measuring the strength of labor pains. Internal methods include the open-end tube method, balloon method, and pressure transistor method, while external methods include the strain gauge method and differential transformer method. *Some of the terminology that refers to "external measurement method" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…bpmと略)である。陣痛計には,陣痛つまり子宮の収縮によって子宮壁が硬くなり盛りあがって変形するのを信号としてとりだす,つまり,力学的変位を電気的エネルギーに変換して,陣痛の強さとして測定する外測法(腹壁上から測る)と,子宮内圧を直接測る内測法とがある。内測法としてはオープンエンドチューブ法,バルーン法,圧力トランジスター法が,外測法としてはストレンゲージ法,差動トランス法などが用いられる。… ※「外測法」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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