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Chapter 14: Arterial Puncture Procedures 281 Case Studies Case Study 14-1: Modified Allen Test and ABG Specimen Collection A
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1. Phlebotomist avoided allen test before performing sampling

2. error could uave been avoided by performing modified allen test again or changing the sample site

3. previous blood sample might be taken from radial artery and there may be disruption of artery which have affected coppateral circulation.

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