Pressure of normal uterine contractions is between 190-300 units. Which unit is being referred here?: (A) Montevideo units, (B) mm of Hg, (C) cm of water, (D) Joules /kg
Answer is A. 1 Montevideo unit = Intensity of contraction x Number of contractions in 10 mins. It is used to define uterine activity. Clinical labour usually commences when the uterine activity reaches values between 80-120 Montevideo units i.e, 3 contractions of 40 mm Hg every 10 mins. During labour, Normal uterine contractions are between 190-300 Montevideo units . Ref: Williams Obs 23e pg 437.