Ans. a. 10-15 seconds(Ref Current DiMMOCIC and Treatment Critical Care 3/e p255)Tracheal secretions should he suctioned limiting the time to less than 10-15 seconds. The patient should be preoxygenated with 100% oxygen for at least a minute, and the total suction time should be limited to no more than 10-15 seconds on each attempt.
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