A nurse is preparing to administer penicillin IM to an adult client. Which of the following angles should the nurse use for injection into the client's ventrogluteal muscle?

B. This method is recommended because the deltoid muscle is a large, rounded, triangular muscle that covers the shoulder joint.

A. This description is for locating the vastus lateralis muscle, which is commonly used for intramuscular injections in infants and young children, not adults.

C. This technique is used for locating the rectus femoris muscle, another site for intramuscular injections in infants and young children, not adults.

D. This location is too low, which could miss the muscle tissue and reduce the effectiveness of the vaccine.

D. A 90° angle (perpendicular to the skin surface) is typically used for IM injections into muscles where the needle needs to penetrate deeply into the muscle tissue.

A. 60° angle is commonly used for IM injections in the deltoid muscle or thigh. However, it may not be optimal for the ventrogluteal site, which typically requires a different approach due to its deeper location and muscle structure.

B. A 45° angle is typically used for subcutaneous injections, where the needle is inserted into the fatty layer just below the skin surface.

C. This angle is steeper than 60° and is sometimes used for IM injections into muscles with thicker tissue or larger muscle mass.