Correct Answer: D

Rationale: The vastus lateralis site is located in the middle third of the thigh.

Correct Answer: A

Rationale: Depression is the most common psychogenic disorder among elderly individuals. It can manifest as persistent feelings of sadness, hopelessness, and loss of interest in activities that were once enjoyed. Elderly individuals may also experience changes in appetite, sleep disturbances, and difficulty concentrating. Detecting and addressing depression in the elderly is crucial for their overall well-being and quality of life.

Correct Answer: A

Rationale: The patient's symptoms of shortness of breath, orthopnea, thick, tenacious secretions, and a dry hacking cough all point towards a potential airway clearance issue. This makes option A, 'Ineffective airway clearance related to thick, tenacious secretions,' the most appropriate nursing diagnosis. It directly addresses the thick secretions and suggests a potential cause of the breathing difficulty the patient is experiencing.

Correct Answer: D

Rationale: The correct answer is D. When a physician orders a maintenance dose of subcutaneous heparin, nursing responsibilities include reviewing daily activated partial thromboplastin time (APTT) and prothrombin time to monitor the patient's coagulation status, reporting an APTT above 45 seconds to the physician as it may indicate a risk of bleeding, and assessing the patient for signs and symptoms of frank and occult bleeding, which are potential adverse effects of anticoagulant therapy. Therefore, all the options listed are essential nursing responsibilities when a patient is on subcutaneous heparin therapy.

Correct Answer: A

Rationale: Massaging a reddened area can cause further tissue damage by increasing pressure on already compromised skin. The other options, such as using specialized mattresses, adhering to repositioning schedules, and maintaining good skin care, are all recommended strategies to prevent pressure ulcers by reducing pressure and friction on vulnerable areas of the skin.