Which of the following is the best initial strategy in addition to docusate sodium to prevent constipation in a 45-year-old patient initiating around-the-clock morphine therapy for chronic pain associated with malignancy?

A study is conducted comparing two antibiotics for the treatment of UTIs. The results after 7 days of therapy demonstrated that Drug A was superior to Drug B in eradicating bacteria from the urine and eliminating signs and symptoms of infections. The investigators concluded that Drug A was significantly superior to Drug B (p<0.05). In subsequent studies, however, the two drugs were equivalent in efficacy.
Which one of the following types of error apparently occurred in the first study?

Which of the following disease states has been associated with stress-related mucosal bleeding and is an indication for initiation of stress ulcer prophylaxis?

A patient presents at a physician's office with gait unsteadiness and clumsiness. The patient has a history of type 2 diabetes mellitus, hypertension, and chronic numbness and tingling of the feet and fingertips.
Examination reveals mild distal wasting, glove-and-stocking sensory impairment, absent ankle jerks, brisk knee jerks, and bilateral Babinski reflexes. Gait is slightly ataxic.
CBC reveals a hemoglobin of 10.1 g/dL, WBC of 4,500 cells/mL, MCV 120 fL, and platelets
163,000 cells/ul.
Which of the following is the most important laboratory test for assisting in diagnosis?

To correct the development of metabolic acidosis in patients receiving standard TPN solutions, which of the following is the best therapeutic intervention?