A nurse is caring for a client who is postoperative following knee arthroplasty and has a new prescription for enoxaparin 1mg/kg subcutaneous. The client weighs 185 lb. How many mg should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

A. Urinary tract infection
The symptoms described, including recent mental status changes and periods of incontinence, are suggestive of a urinary tract infection (UTI) in an elderly individual. UTIs are common among older adults and can cause a variety of symptoms, including confusion, which is often the primary manifestation in the elderly population. Other symptoms can include urinary urgency, frequency, and incontinence.

B. Acute kidney failure - While acute kidney failure can cause changes in urination and mental status, it is less likely to be the primary cause of these symptoms in this scenario. UTI is a more common and immediate concern given the symptoms described.

C. Septic shock - Septic shock is a severe condition that occurs when an infection leads to a life-threatening drop in blood pressure. While septic shock can cause altered mental status, it is a critical condition that often presents with more dramatic symptoms and requires immediate intensive care management. The symptoms described are more suggestive of a UTI.

D. Urinary stasis - Urinary stasis refers to the slowing or cessation of urine flow. While urinary stasis can contribute to the development of UTIs, it is not a condition that would cause sudden and acute mental status changes and incontinence on its own. UTI is a more likely cause of the symptoms described.

A. Applying ice intermittently - Ice application helps reduce swelling and inflammation by constricting blood vessels. It is effective in managing pain and preventing further tissue damage in contusions, strains, and sprains.

B. Elevating the injured limb - Elevating the injured limb above the level of the heart helps reduce swelling by allowing fluids to drain away from the injured area. This is particularly important in managing contusions, strains, and sprains where swelling is a common symptom. Elevation supports the body's natural healing processes.

C. Resting the affected extremity - Rest is essential to allow the injured tissue to heal. Avoiding movement and stress on the affected area prevents further damage and promotes the healing process. Resting the extremity prevents additional strain on the injured muscles, ligaments, or tendons, allowing the body to repair the damaged tissues effectively.

D. Massaging the affected limb - Massaging the affected limb is generally not recommended in the acute phase of musculoskeletal injuries, especially contusions, strains, or sprains. Massaging can potentially worsen the injury, increase swelling, and cause further tissue damage. It is important to wait until the initial acute phase has passed and consult a healthcare professional before considering massage therapy.

E. Compression dressings - Compression helps control swelling by applying pressure to the injured area. Compression dressings or bandages provide support to the injured limb, minimize swelling, and reduce the risk of further injury. However, it's essential to apply compression correctly to avoid cutting off circulation, and it's usually best done under the guidance of a healthcare provider.