When assessing the maxillary sinuses for tenderness, which action should the nurse take?

Intramuscular analgesic administration involves deposition of medication into skeletal muscle tissue allowing systemic absorption through capillary perfusion, producing onset dependent on drug class, lipid solubility, and circulation with expected analgesic effect occurring within defined pharmacokinetic time window requiring reassessment.

Rationale:

A. 10 minutes after intramuscular injection is too early for most analgesics to reach therapeutic plasma concentration. IM absorption requires vascular uptake and systemic distribution. Pain relief is usually not fully established at this time, making assessment premature and unreliable for efficacy evaluation.

B. 2 hours may be appropriate for some long-acting analgesics, but it exceeds the recommended initial reassessment window for most IM pain medications. Delayed evaluation risks prolonged untreated pain. Clinical guidelines emphasize earlier reassessment to ensure timely dose adjustment or additional intervention if needed.

C. Within 1 hour is the standard reassessment time for most IM analgesics as peak effect typically occurs within this period depending on drug type. This allows evaluation of analgesic efficacy and detection of inadequate pain control for timely clinical intervention or dose adjustment.

D. Once a shift is inappropriate for acute pain management following IM administration. Pain must be reassessed shortly after drug absorption begins, not at prolonged intervals. This approach risks uncontrolled pain, delayed response evaluation, and failure to meet effective pain management standards in clinical care.

Visual acuity is measured using the Snellen chart, which compares the distance at which a patient can read letters to the standard distance a person with normal vision can read the same letters. It reflects the clarity and resolving power of the retina and central visual pathways.

Rationale:

A. 20/200 indicates the patient can read at 20 feet what a person with normal vision can read at 200 feet. This represents severe visual impairment consistent with significant reduction in visual acuity. The ratio is standardized with 20 feet as the testing distance.

B. 200/10 reverses the standard Snellen notation format. Visual acuity is always expressed with the testing distance (20 feet) as the numerator. This option is not clinically valid and does not represent correct ophthalmologic documentation.

C. 10/200 incorrectly uses 10 feet as the testing distance, which is not standard for Snellen chart interpretation. It does not reflect the correct ratio definition and therefore is not an accepted visual acuity measurement format.

D. 200/20 incorrectly reverses numerator and denominator values. This would imply abnormal scaling opposite of Snellen convention. It does not represent proper documentation of visual acuity and is not clinically interpretable.