0 a small round lump of a substance, especially partly digested food:
1 a single dose (= measured amount) of a drug:
Patients were given boluses of 20 or 30 μg of fentanyl.
After taking a drink the food is brought back up in a bolus.
Meat bolus was the most common cause of esophageal obstruction.
An attempt to remove the bolus was unsuccessful as it was tightly impacted in the distal esophagus.
The patient presses a button and receives a preset dose or "bolus" of the drug (e.g. one milligram of morphine).
Caffeine citrate is commonly administered as a 20 mg/kg bolus (IV or oral).
Give fluid boluses of 10-20ml/kg and assess clinically.
It is given as a bolus (1.0-1.5 mg/kg) intravenously.
