- All Patients will be tested by antepartum fetal heart monitoring "Non stress test".This will be considered reactive if there are two or more fetal heart rate accelerations peaking at least by 15 beats/min above the baseline and lasting for 15 seconds or more from baseline, within a 20 minutes period, with or without fetal movement felt by the mother. A non-reactive tracing will be one without sufficient fetal heart rate accelerations over a 40 minutes period. Any patient with non-reassuring non stress test will be excluded.