bolus


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Related to bolus: bolus dose, bolus injection

bolus

 [bo´lus]
1. a rounded mass of food or pharmaceutical preparation ready to be swallowed, or such a mass passing through the gastrointestinal tract.
2. a concentrated mass of pharmaceutical preparation, e.g., an opaque contrast medium, given intravenously or swallowed.
3. a mass of scattering material, such as wax or paraffin, placed between the radiation source and the skin to achieve a precalculated isodose pattern in the tissue irradiated.
alimentary bolus the mass of food, made ready by mastication, that enters the esophagus at one swallow.

bo·lus (bol),

(bō'lŭs),
1. A single, relatively large quantity of a substance, usually one intended for therapeutic use, such as a bolus dose of a drug injected intravenously.
2. A masticated morsel of food or another substance ready to be swallowed, such as a bolus of barium for radiographic studies.
3. In high-energy radiation therapy, a quantity of tissue-equivalent material placed in the radiation beam, over the surface of the irradiated region, to increase the absorbed dose in the superficial tissues.
[L. fr. G. bōlos, lump, clod]

bolus

(1) Any concentrate given as a single dose to achieve an immediate effect.
(2) Any mass or globule—e.g., masticated food—in transit through a tube.

Endocrinology
An extra boost of insulin given to cover expected rise in blood glucose (sugar) such as the rise that occurs after eating.

Therapeutics
A large IV dose of a drug given all at once at the beginning of treatment, which raises the concentration in the body to a therapeutic level. In treating malignancy, prolonged IV infusions may be more effective than intermittent bolus injections.
 
Vox populi
A popular term for a hyperinfusion of information—e.g., “crash” review courses before boards exams.

bolus

1. Any concentrate given as a single dose to achieve an immediate effect.
2. Any mass or blob–eg, masticated food, in transit through a tube Endocrinology An extra boost of insulin given to cover expected rise in blood glucose–sugar such as the rise that occurs after eating Therapeutics A large IV dose of a drug given “all at once” at the beginning of treatment, which raises the concentration in the body to a therapeutic level.

bo·lus

(bō'lŭs)
1. A single, relatively large quantity of a substance, usually one intended for therapeutic use (e.g., bolus dose of an intravenously injected drug) generally followed by smaller doses.
2. A masticated morsel of food or another substance ready to be swallowed (e.g., a bolus of barium for x-ray studies).
3. In high-energy radiation therapy, a quantity of tissue-equivalent material placed next to the irradiated region to increase the dose of secondary radiation to the superficial tissues.
[L. fr. G. bōlos, lump, clod]

bolus

1. A chewed-up quantity of food in a state ready to be swallowed.
2. The dose of a drug injected as rapidly a possible into a vein so as to be diluted as little as possible.

bolus

a soft mass of chewed food, suitable for swallowing, shaped by the tongue in the BUCCAL cavity

bo·lus

(bō'lŭs)
1. A single, relatively large quantity of a substance, usually one intended for therapeutic use (e.g., dose of an intravenous drug).
2. A masticated morsel of food or another substance ready to be swallowed.
[L. fr. G. bōlos, lump, clod]
References in periodicals archive ?
Time in minutes for return of TOF '1' after initial bolus dose among vecuronium and atracurium groups was 53.8 [+ or -] 9.8 and 38.7 [+ or -] 6.8 min respectively and statistically significant with a p value < 0.0001.
sex, response to bolus, response to initiation of desflurane, number of boluses of desflurane administered, etc.
Patients with DKA are initially seen in the emergency department, where emergency measures are implemented when DKA is diagnosed (fluid bolus, insulin therapy and correction of electrolyte disturbances).
Mean fasting and random glucose levels of patients on premix insulin regimen were much better (p value 0.008) than those on basal bolus regimen because patients were more compliant to premix insulin vs.
A bolus of 2.000.000 IU of urokinase was given and 20 minutes later effective rhythm was achieved.
In different literature, the optimum dose of oxytocin which is administered routinely as an intravenous bolus at the time of delivery of fetus in caesarian section is 5 IU6.
This study investigated the effect of bolus conditions on measurements of SEMG duration.
The company said the software provides practitioners with a turn-key solution that enables 3D printing of patient-specific uniform thickness bolus, modulated bolus for MERT (modulated electron radiation therapy), High Dose Rate (HDR) surface brachytherapy as well as other potential ancillary devices.
Spearman's rank correlation test was used to identify correlation between bolus clearance and the length of breaks for the 30 mmHg isobaric contours.
A premeal blood glucose level determines whether additional insulin should be added to the premeal bolus to cover premeal blood glucose excursions using a sensitivity factor (SF).
Randomly half of the ewes were treated with a ruminal trace mineral bolus. Each bolus contains copper 3,944 mg; cobalt 95 mg; selenium 45 mg; manganese 3013 mg; zinc 4366 mg and iodine 330 mg.
They broke down the wait time into three components: arrival to fluid bolus, fluid bolus start to insulin start, and the overall arrival-to-insulin time.