ATime or number of strokes, hand to elbow sequence
BNumber of strokes, elbow to hand sequence
CNumber of strokes, no anatomical sequence
DTime, no anatomical sequence
✓ Correct answer: A. Time or number of strokes, hand to elbow sequenceAn active surgical hand scrub is a critical step in maintaining a sterile environment during surgery. It involves thoroughly cleaning the hands and forearms to eliminate any microorganisms that may be present.<br/><br/>Option A (Time, no anatomical sequence) is incorrect because it does not consider the importance of following a specific anatomical sequence during the scrub. The hand to elbow sequence ensures that all areas are properly cleaned, reducing the risk of contamination.<br/><br/>Option B (Number of strokes, no anatomical sequence) is also incorrect because it neglects the necessary anatomical sequence. Simply counting the number of strokes without following a specific pattern may result in missed areas or inadequate cleaning.<br/><br/>Option D (Number of strokes, elbow to hand sequence) is incorrect because it reverses the anatomical sequence. Starting from the elbow and moving towards the hand can lead to cross-contamination from areas that are already cleaned to areas that are still dirty.<br/><br/>The correct answer, C) Time or number of strokes, hand to elbow sequence, encapsulates the essential elements of an active surgical hand scrub. This ensures that each part of the hand and forearm is adequately cleaned through a systematic process, reducing the risk of surgical site infections.
Keep practising. Use the free AST CST PDF, watch the YouTube walkthrough, or unlock all 10 web questions with timed mock exams.
Free practice here. Timed mocks when you are ready.
Study the AST CST Exam Prep 2026 Test free question explanations, download the PDF, then unlock timed mock exams on the web when you want exam-day practice.