<prompt> Pressure of normal uterine contractions is between 190-300 units. Which unit is being referred to here?Montevideo unitsmm of Hgcm of waterJouleskg  <response>: Ans. is a, i.e. Montevideo unitsRef Williams Obs, 23e, p 4371 montevideo unit Intensity of constraction x number of contractions in 10 mins.Montevideo unit is to define uterine activity.As per this:Clinical labour usually commences when uterine activity reaches values between 80-120 Montevideo units This translates into approximate 3 contractions of 40 mm of Hg every 10 minutes.During labour--Normal uterine contractions are between 190-300 Montevideo units At the time of delivery it is 300 Montevideo units 