Question: A 74 year old female resident with a history of Alzheimer's and Type II diabetes has complained of difficulty breathing while lying down for the past two days. You note mild edema in both lower extremities and tachycardia. She has no cardiac history and lungs are clear bilaterally. Her dietary intake has been poor in the past couple of weeks. Considering her history and acute symptoms, you recognize this as possible: checkmark-icon urinary tract infection checkmark-icon thiamine (B1) deficiency checkmark-icon acute pneumothorax checkmark-icon acute dehydration