An adult patient presents with fever and a new regurgitant murmur. Blood cultures reveal the presence of Streptococcus viridans, and an echocardiogram shows vegetations on the mitral valve. On examination, nontender, erythematous macules are present on her palms. Which of the following best describes the underlying mechanism for this physical examination finding?
Added by Erin B.
Step 1
The patient presents with fever, a new regurgitant murmur, and blood cultures positive for Streptococcus viridans. An echocardiogram shows vegetations on the mitral valve. These findings are indicative of infective endocarditis. Show more…
Show all steps
Your feedback will help us improve your experience
James Kiss and 61 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Mitral valve stenosis is a condition whereby the mitral valve narrows. Which of the following would be a consequence of this condition? (Consider your answers based on the condition alone, not the subsequent compensatory mechanisms). Select all that apply. Group of answer choices: Peripheral (systemic) edema Increased aortic pressure Pulmonary hypertension Pulmonary edema Decreased left heart ejection fraction Decreased right heart end-diastolic volume Increased left ventricular end-diastolic volume Reduced coronary arterial pressure
Madhur L.
Heart murmurs caused by a stenotic mitral valve ______. Choose the correct answer: A) are heard as a high-pitched click when the valve should be—but is not—wide open during systole. B) are detected due to the turbulent blood flow that occurs as blood backflows into the left atrium. C) are detected if the valve's cusps are thin and flexible. D) All of the listed responses are true.
Adi S.
Your patient is a 15-year-old boy with migratory polyarthritis, fever, and a new, loud cardiac murmur. You make a clinical diagnosis of rheumatic fever. Which one of the following modes of pathogenesis is most compatible with this diagnosis? a. Bacteria attach to joint and heart tissue via pili, invade and cause inflammation b. Bacteria cause violent destructive infection of heart valves c. Bacteria secrete exotoxins that circulate via the blood to the joints and heart d. Bacterial antigens induce antibodies that cross-react with joint and heart tissue e. Bacterial endotoxin induces IL-1 and TNF, which causes inflammation in joint and heart tissue.
Asma V.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD