@ hypertensive patients , taking antihypertensive drugs and with systolic blood pressure below @ ( mmHg and diastolic blood pressure below @ mmHg scheduled for elective surgeries , requiring oral endotracheal intubation and age ranging from @-@ years were included in this study and randomly divided into Group A ( clonidine @ mg + fentanyl @ microg/Kg ) and Group B ( Placebo + fentanyl @ microg/Kg ) .