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Before intubation anesthesia
before intubation anesthesia intubation of cardiovascular reflex prevention
respiratory tract operation, especially placed laryngoscope and endotracheal intubation, can cause strong cardiovascular reaction. Infants and young children mainly for bradycardia, laryngospasm, bronchospasm, adult mainly for high blood pressure, tachycardia and increased intracranial pressure, some can cause myocardial ischemia, cerebral vascular or aorta vascular rupture.
1. Deepen anesthesia
fentanyl can effectively weaken the stimulation caused by hemodynamic response; Etomidate can provide sufficient depth of anesthesia, effectively restrain intubation cardiovascular responses without obvious low blood pressure (hypotension).
2。 Vein to lidocaine
vein to 1. 5 mg/kg lidocaine.
3。 Surface anesthesia and nerve block.
4。 The use of vascular active drugs: clonidine, etc.