| 词汇 | bolus |
| 释义 | bolus noun[ C ] medical specializeduk /ˈbəʊ.ləs/ us /ˈboʊ.ləs/ bolusnoun[C] (MASS)a small round lump of a substance, especially partly digested food: （尤指咀嚼过的）一团东西 They found a large bolus of clogged material in her stomach.他们发现她的胃里堵了一大团东西。 The gel may form a bolus. 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. Masses and large amounts of things accumulation any number of thingsidiom armload backlog blood clot flood foam inundation lion logjam many motherlode pile sight stack the lion's shareidiom wave after/upon waveidiom wedge welter wodge bolusnoun[C] (DRUG)a single dose (= measured amount) of a drug: 一片药;一剂药 Patients were given boluses of 20 or 30 μg of fentanyl.病人注射了20或30微克芬太尼。 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. Medicines & drugs: administering drugs & medicines anaesthesiology anaesthetize auto-injector blood doping deprescribe dispense inject lethal dose lethal injection medicated microdose microdosing microinject prescribe put something on reinject reinjection sedate sedation self-medicate You can also find related words, phrases, and synonyms in the topics: Medicine in different forms Examples of bolusbolus If heart rate did not decrease by > 10 bpm, the infusion rate was doubled and a second esmolol bolus was given. This propels the bolus to the stomach through the lower oesophageal sphincter. Other common near misses included using the wrong field size, energy, collimator angle, bolus or wedge direction. Its biological function is to guide a food bolus into the oesophagus. The bolus moves with a bulk speed equal to that of the drops. All boluses of field-checked faeces were broken open by hand and seeds separated from faecal material. In the oral cavity, repetitive tongue pumping delays the movement of the bolus and diminishes triggering the pharyngeal swallow. Checking if bolus material was not forgotten can not be done systematically; it was only counted if the radiation technologist reported it. It has a rapid onset of action, which persists for around one hour after a bolus injection. Smaller doses, smaller rates of infusion or repeated small boluses are advisable. Bolus doses are not more effective or safer than infusion. However, the cost of a sufficient number of boluses to treat adult cattle could be prohibitive. The custom bolus reduces air gaps or other variations in thickness seen with standard flat sheets of bolus material. Effects of verbal cue on bolus flow during swallowing. Salivary gland secretion is reduced; mastication to prepare food is increased, as is the time required to prepare the bolus. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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