Anaes Vivas · Measurement & monitoring physics
Data viva — electrical safety in the operating theatre
A Primary physics data viva — read a shock-threshold table and safety-system diagram; define macroshock (greater than 100 mA VF) vs microshock (100 microamperes VF, via catheter); explain earthing, fuses, RCDs and isolated circuits; describe the diathermy principle and the surgical fire triangle.
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Prompt
A Primary physics data viva — read a shock-threshold table and safety-system diagram; define macroshock (greater than 100 mA VF) vs microshock (100 microamperes VF, via catheter); explain earthing, fuses, RCDs and isolated circuits; describe the diathermy principle and the surgical fire triangle.
Stimulus
A diagram shows a macroshock-vs-microshock comparison table with VF thresholds (100 mA for macroshock through skin, 100 microamperes for microshock via catheter) and four labelled safety-system icons (an earth symbol, a fuse, an RCD, and an isolation transformer). Describe the two types of shock, give their VF thresholds, and explain how each safety system works.
References3ShowHide
- [1]Vilela A, et al. Gingival Margin Stability in Esthetic Crown Lengthening Surgery Using Electronic Versus Conventional Scalpel: A Pilot Split-Mouth Randomized Clinical Trial. Int J Periodontics Restorative Dent, 2026.PMID 42361062
- [5]Zhang Y, et al. Secondary reconstruction of tendons and nerves improves long-term function in electrical burns of the wrist: A retrospective cohort study. Burns, 2026.PMID 42296601
- [8]Ohev Shalom R, et al. Tricuspid valve infective endocarditis due to ESBL producing E.coli associated with AV block requiring epicardial pacing: A case report. J Cardiothorac Surg, 2026.PMID 42363188