Air Bubble in CSCI Syringe Significance — SCE Palliative Medicine MCQ
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EasySyringe Driver & Drug CompatibilityAir Bubble in CSCI Syringe SignificanceSCE Palliative Medicine
Educational content. Not a substitute for clinical judgement or local policy.
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Correct answer: A — Small air bubbles (<1 mL) in a subcutaneous CSCI are clinically insignificant; no action is needed unless the bubble is large or causing obstruction.
Explanation lettering: E = shown as B · B = shown as D · D = shown as E
Small air bubbles (<1 mL) present during a continuous subcutaneous infusion are harmless, as subcutaneous tissues absorb air readily; UK NHS palliative care guidance states air should be expelled during preparation, but makes clear that detection of a small bubble during the infusion does not require intervention. Halting the infusion (B) would disrupt symptom control needlessly. Reporting this as a critical incident (C) or attempting to manipulate the system (D, E) introduces unnecessary risk and is not supported by guidance. The correct response for a small, non-obstructive bubble is to continue monitoring the patient, taking no direct action.
Reference: Cheshire NHS Trust (2019) Syringe Driver Procedure for Administration of Medication via a Subcutaneous Route; North Yorkshire CCG (2020) Guide to Patient and Carer SC Medication Administration. https://www.cheshire-epaige.nhs.uk/wp-content/uploads/2019/05/Syringe-Driver-Procedure-for-the-administrationof-medicationvia-a-subcutaneousroute-including-use-of-Mc-Kinley-T34-syringe-driver-ECT002989-1.pdf