A dental hygienist relocates to a new state and works as a dental assistant until a dental hygiene license is approved.  The dentist asks him to remove calculus with an ultrasonic scaler.  Which of the following is a consequence if the dental hygienist agrees to the dentist’s request? (Select all that apply)

A 33-year-old woman presents to the ED in cardiac arrest. The husband says the patient woke this morning complaining of some chest discomfort and having difficulty “catching her breath.” Upon standing, the patient had a syncopal episode and that is when her husband called the paramedics. Her husband states that the patient has no past medical history and the only medication she is taking is oral contraceptives. There is no previous family history of sudden cardiac death. The patient is an active smoker. Cardiopulmonary resuscitation (CPR) is continued upon patient arrival to the ED. She is placed on the cardiac monitor and during a rhythm check the patient is found to have a bradycardic rhythm, however, she remains pulseless. CPR is subsequently resumed and additional 1 mg of epinephrine is administered. Return of spontaneous circulation is achieved. An ECG is performed which reveals sinus tachycardia with a right bundle branch block and right axis deviation but is otherwise unremarkable without evidence of ST changes. What is the likely cause of the patient’s presentation?

A patient arrives at the ED with a blood sugar of 578, serum osmolarity of 300, pH of 7.3, severe thirst, dehydration, and confusion. The patient is breathing rapidly and has a fruity breath smell. This patient has symptoms of:

A 26-year-old man presents to the emergency department with fevers, chills, malaise, and joint pain that started in his right knee 4 days ago and is now in his left wrist. On exam, his temperature is 39.0°C, and he looks ill. He has a small effusion of the right knee and you note a rash on his palms and the dorsum of his hands consisting of a couple of palpable purpura as well as a pustule with a small necrotic center, as seen in the image above. He has no other skin lesions and the rest of his physical exam is unremarkable. Which of the following is the most likely diagnosis?  

A 31-year-old woman, who has two healthy children, notes that she has had no menstrual periods for the past 6 months, but she is not pregnant and takes no medications. Within the past week, she has noted some milk production from her breasts. She has been bothered by headaches for the past 3 months. After nearly hitting a bus while changing lanes driving her vehicle, she is concerned with her vision. An optometrist finds her lateral vision to be reduced. On physical examination she is afebrile and normotensive. Which of the following laboratory test findings is most likely to be present in this woman?

A 6-year-old immigrant boy from Bangladesh presents with fever and rash. The fever started 3 days ago followed by a rash which started on the head and spread to the rest of the body. Examination reveals a well appearing child with a maculopapular rash and posterior cervical lymphadenopathy. Which of the following is the most likely causative organism for this disease?

A 10-year-old boy returns to the ED for the second time in a week complaining of a right-sided headache. Five days ago, he was also seen for a right-sided headache, thick nasal drainage, and fever. A diagnosis of acute sinusitis was made, and he was discharged on amoxicillin-clavulanate, nasal spray, and decongestants. Today, he returns for continued pain above his right eye, fever, vomiting, and confusion. Vital signs are T 39.4°C, BP 85/40 mm Hg, HR 130 bpm, and RR 32/min. His exam is notable for drowsiness, confusion, yellow nasal discharge from both nares, and tachycardia. Which of the following findings confirms the most likely diagnosis?

Which of the following is at the highest risk for suicide?

Which of the following patients mandates reporting to health authorities in all 50 states or to federal officials?

Which of the following features, in addition to progressive cognitive decline, is most consistent with a diagnosis of dementia with Lewy bodies?