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Montevideo units are a method of measuring uterine performance during labor. They were created in 1949 by two physicians, Roberto Caldeyro-Barcia and Hermogenes Alvarez, from Montevideo, Uruguay. Units are calculated by internally (not externally) measuring uterine pressure above baseline tone and multiplying by the number of contractions in a 10-minute period.〔(【引用サイトリンク】title=MATERNITY GUIDE - Labor & Delivery )〕 Uterine pressure is generally measured through an intrauterine pressure catheter. Montevideo units can be more simply calculated by summing the individual contraction intensities in a ten-minute period, a process which should arrive at a result identical to the original method of calculation. Generally, above 200 MVUs is considered necessary for adequate labor during the active phase. ==Example== If, for instance: * uterine pressure above baseline were 50 mmHg * during the 10 minute period of measurement 3 contractions occurred * total Montevideo units (MVUs) would be equal to 150 MVUs (50 * 3) * Montevideo units are calculated by subtracting the baseline uterine pressure from the peak contraction pressure for each contraction in a 10-minute window and by adding the pressures generated by each contraction. * For example, five contractions occurred, producing pressure changes of 52, 50, 47, 44 and 49 mm Hg, respectively. The sum of these five contractions is 242 Montevideo units. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Montevideo units」の詳細全文を読む スポンサード リンク
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