Attenuation of Hemodynamic Response to Laryngoscopy and Endotracheal Intubation With Single Dose of Dexmedetomidine in Hypertensive Patients.

Inclusion Criteria:

• - Age group 20-60 years
• ASA grade 1 and 2
• control hypertensive patients.

Exclusion Criteria:

• - Consent not given
• ASA Grade 3 and 4
• history of myocardial ischemia or infarction, or had an abnormal ECG on admission to the hospital
• Patients with cardiovascular, pulmonary, hepatic, and renal disease.
• Patients on B blockers.
• patients with difficult airway; laryngoscopy and intubation time more than 20 s, or requiring more than two attempts will be exclude from the study.