Final answer:
The only insulin that can be administered STAT, or immediately, is Regular insulin. This is because it has a rapid onset of action suitable for quickly lowering blood glucose levels, unlike other types of insulin such as Lispro, Glargine, and NPH.
Step-by-step explanation:
The only insulin that you can give "STAT" for immediate action is Regular insulin. This type of insulin acts quickly and is used in situations where blood glucose levels need to be lowered rapidly, such as in a case of hyperglycemia or before eating a meal. The other insulins mentioned—Lispro, Glargine, and NPH—have different onsets of action and are not used for immediate effect.
Regular insulin is also important for emergency situations and can be administered intravenously, which is why it's the choice for "STAT" or immediate administration.
To clarify the other options: Insulin Lispro is a rapid-acting insulin, but not as immediate as Regular; Insulin Glargine is a long-acting insulin; and NPH (Neutral Protamine Hagedorn) insulin is an intermediate-acting insulin.