<prompt> Ideally, traction during vacuum extraction should be applied in which of the following manner?ContinouslyIntermittently with cycles of 20seconds of traction followed by 1minute of restIntermittently and with contractionsIntermittently and between contraction  <response>: After the vacuum is applied, Effo should be intermittent and coordinated with maternal expulsive effos and contractionsRef: Williams Obstetrics; 25th edition 