Your 60-year-old male patient experiences periodic pain in the upper chest and left shoulder when he overexerts himself, is under emotional stress, or is in places where the temperature and humidity are high. He has had this problem for several years, and the pain is relieved with rest and taking a nitroglycerin tablet. The most likely reason for these symptoms is

Arterial blood gas analysis provides vales of the partial pressure of oxygen (PaO2) in the blood. Which of the following is a normal value for PaO2?

You are treating a 28-year-old female for carpal tunnel problems. She tells you that she has Raynaud’s Syndrome. After you complete the treatment, the patient is down for cold packs to the hands and wrist area. Which of the following is the best treatment choice?

Many heart valve problems are a result of endocarditis (which is an infection in the lining of the heart). Which of the following is a type of heart valve problems?

Which documentation practice is most appropriate when child abuse is suspected?

A 6-year-old with blunt chest trauma becomes acutely hypotensive with absent breath sounds on the right and tracheal deviation. Where should needle decompression be performed?

A 10-year-old presents with tinnitus, tachypnea, and metabolic acidosis after ingesting an unknown substance. Which acid–base abnormality is most characteristic of this toxicity?

A severely injured child has ongoing bleeding despite normal initial coagulation labs. What best explains this finding?

A mother brings in her 4-month-old infant and 6 year old child to the ER when the 6 year old child fell while riding a bike.  The child appears to have a displaced finger. The infant in mother’s arms is alert and well-appearing. As a clinician you see a single 1-cm bruise on the right cheek of the infant, otherwise the infant appears well. The caregiver reports the bruise occurred when the infant “bumped into a toy” while being held by an older sibling. Which of the following is the most appropriate next step regarding the care of the infant?

A 3-year-old child is brought to the emergency department after being found with an open bottle of an unknown household substance. The caregiver is unsure how much or what was ingested but reports the child had access for approximately 30 minutes. On arrival, the child is lethargic but arousable.  Vital signs: HR 156, RR 34, BP 94/48, Temp 37.6, SpO2 98% on room air Physical exam: Diaphoretic, flushed skin, vomited once in triage, no focal neuro deficits Lab results: pH 7.29, CO2 22, HCO3 10, Anion gap 26, serum glucose 88, Lactate 1.6, serum osmolality normal, urinalysis positive for ketones Which of the following is the most appropriate next step in management?