Final answer:
The false statement is that medications should be diluted with normal saline when administered through the ETT of a patient in cardiac arrest.
Step-by-step explanation:
The false statement regarding the administration of medications through the ETT of a patient in cardiac arrest is option D: Medications should be diluted with approximately 10 mL of normal saline when they are administered through the ETT.
When medications are administered through the ETT, they should not be diluted with normal saline. Diluting the medication can decrease its effectiveness, as it may not reach the intended concentration needed for therapeutic effect.
It is important to administer medications through the ETT with caution and follow specific protocols and guidelines to ensure optimal delivery and patient safety.