Which client is at greatest risk for osteoporosis?

Choice A reason: Insulin lispro, a rapid-acting insulin, peaks 1-2 hours after administration (around 8:30-9:30 am for a 7:30 am dose). This peak coincides with maximum glucose-lowering effect, increasing hypoglycemia risk, especially if breakfast is inadequate or delayed. This time is the most likely for low blood sugar due to insulin’s pharmacodynamics.

Choice B reason: At 7:45 am, insulin lispro is just beginning to act (onset 15-30 minutes), and breakfast is likely being consumed, providing glucose to counter insulin’s effect. Hypoglycemia risk is lower than at peak action (1-2 hours), making this time less critical for hypoglycemia monitoring.

Choice C reason: By 12:30 pm, insulin lispro’s effect (duration 3-5 hours) is waning, and glucose from breakfast is metabolized. Hypoglycemia risk is lower unless additional insulin or activity occurs. This time is less likely for hypoglycemia compared to the peak action period around 8:30 am.

Choice D reason: Tomorrow at 6:30 am is beyond insulin lispro’s duration of action (3-5 hours). Hypoglycemia risk from the 7:30 am dose is negligible 23 hours later, as insulin is cleared. This time is irrelevant to the dose’s effect, making it the least likely for hypoglycemia.

Choice A reason: Crush injuries release myoglobin from damaged muscles, causing rhabdomyolysis. Myoglobin precipitates in renal tubules, obstructing them and leading to acute tubular necrosis, an intra-renal acute kidney injury. This toxic effect, combined with oxidative stress, impairs filtration, making this statement accurate for the pathophysiology of renal injury.

Choice B reason: Large IV fluid volumes are used to prevent renal injury in rhabdomyolysis by diluting myoglobin and maintaining perfusion. Fluid overload may cause pulmonary edema but does not typically cause pre-renal damage, which results from hypoperfusion. This statement is inaccurate, as fluids are protective, not harmful.

Choice C reason: Pain medications like NSAIDs can be nephrotoxic, causing intra-renal damage by reducing renal blood flow or causing interstitial nephritis. However, pre-renal damage results from hypoperfusion, not direct toxicity. In crush injuries, myoglobin is the primary cause, making this statement less accurate than myoglobin-related tubular damage.

Choice D reason: Significant blood loss causes pre-renal injury by reducing renal perfusion, not post-renal damage, which involves urinary obstruction. Crush injuries primarily cause intra-renal damage via myoglobin. This statement is inaccurate, as it misattributes the mechanism and type of renal injury in this context.