<prompt> Which is most significant finding in cardiotocography for detection of fetal hypoxia?Late decelerationVariable decelerationSinusoidal decelerationEarly deceleration  <response>: Late deceleration: Begins at or after the contraction peak and touches the baseline only after the end of contraction.It has a smooth and gradual onset and recovery and magnitude is rarely 40bpm.It is classically caused by uteroplacental insufficiency and indicates hypoxia. Most common causes are maternal hypotension following epidural and hyperstimulation due to oxytocics. TEXTBOOK OF OBSTETRICS, SHEILA BALAKRISHNAN ,Pg no:521,2nd edition 