If intravenous access is not available, what is the preferred route for drug access?

If intravenous access is not available, what is the preferred route for drug access?

• A. Intramuscular
• B. Intraosseous
• C. Subcutaneous
• D. Endotracheal

Answer: (B)

When IV access is not available, the fastest and most reliable route for delivering drugs is intraosseous access. By placing a needle into the bone marrow, medications and fluids enter the vascular system quickly because the marrow is richly vascularized, giving a rapid onset similar to IV administration. This method is usable in both adults and children and can be established with minimal equipment, which is crucial during resuscitation. Intramuscular and subcutaneous routes absorb more slowly and variably, making them unsuitable for the urgent needs of ACLS. Endotracheal administration is an option if IV/IO access isn’t possible, but its absorption is unpredictable and dosing is not standardized, so it’s considered less reliable for most medications.

When IV access is not available, the fastest and most reliable route for delivering drugs is intraosseous access. By placing a needle into the bone marrow, medications and fluids enter the vascular system quickly because the marrow is richly vascularized, giving a rapid onset similar to IV administration. This method is usable in both adults and children and can be established with minimal equipment, which is crucial during resuscitation.

Intramuscular and subcutaneous routes absorb more slowly and variably, making them unsuitable for the urgent needs of ACLS. Endotracheal administration is an option if IV/IO access isn’t possible, but its absorption is unpredictable and dosing is not standardized, so it’s considered less reliable for most medications.