A patient has been prescribed to receive 0.3 mL of U-500 insulin. Which syringe will the nurse use to administer the medication?
3-mL syringe
U-100 syringe
Needleless syringe
Tuberculin syringe
The Correct Answer is D
A. A 3-mL syringe is not appropriate for administering U-500 insulin, as the concentration may not allow for accurate dosing at such a small volume.
B. A U-100 syringe is designed for U-100 insulin and would not provide accurate measurement for U-500 insulin.
C. A needleless syringe may be useful in certain contexts, but it does not specifically provide the necessary precision for insulin dosage.
D. A tuberculin syringe is suitable for administering small doses (like 0.3 mL) and provides more accurate measurement for high-concentration insulin such as U-500.
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Correct Answer is A
Explanation
A. The P wave represents atrial depolarization, which is initiated by the SA node, the heart's natural pacemaker.
B. The AV node is responsible for conducting impulses from the atria to the ventricles but does not initiate the P wave.
C. The Bundle of His transmits the electrical impulses to the ventricles but is not directly associated with the P wave.
D. Purkinje fibers are involved in ventricular depolarization, which corresponds to the QRS complex, not the P wave.
Correct Answer is ["A","B","C","D"]
Explanation
A. A patient with an indwelling catheter requires regular perineal care to prevent infection due to increased risk from the catheter.
B. Urinary and fecal incontinence increase the risk of skin breakdown and infection, necessitating frequent perineal care.
C. Surgical dressings in the rectal and genital areas require perineal care to maintain hygiene and prevent wound contamination.
D. Bariatric patients often need regular perineal care due to skin folds and increased risk of moisture-related skin breakdown.
E. A circumcised, ambulatory male typically has a lower risk of infection and may not require as frequent perineal care unless other factors are present.