The CCMA should have the parent hold the child during the capillary puncture to provide comfort and reduce stress, which is critical for a successful procedure. This action is more important than applying pressure at the site, placing a bandage, or warming the site, all of which relate to either post-procedure care or preparation. Therefore, option A is the best choice.
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For an 8-month-old undergoing a capillary puncture, the CCMA should have the parent hold the child to ensure comfort and reduce stress. This practice is crucial for a smooth procedure. Other options, while relevant, are not as critical during the puncture itself. ;