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{{WBRQuestion
{{WBRQuestion
|QuestionAuthor=[[User:Gonzalo Romero|Gonzalo A. Romero, M.D.]] [mailto:gromero@wikidoc.org]
|QuestionAuthor=[[User:Gonzalo Romero|Gonzalo A. Romero, M.D.]] [mailto:gromero@wikidoc.org] (Reviewed by Serge Korjian)
|ExamType=USMLE Step 1
|ExamType=USMLE Step 1
|MainCategory=Biochemistry, Pathophysiology, Physiology
|MainCategory=Biochemistry, Pathophysiology, Physiology
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|MainCategory=Biochemistry, Pathophysiology, Physiology
|MainCategory=Biochemistry, Pathophysiology, Physiology
|SubCategory=Cardiology, Endocrine, Vascular, General Principles
|SubCategory=Cardiology, Endocrine, Vascular, General Principles
|Prompt=A 56-year-old woman comes to the ER because of palpitations.  She has had this since a year ago, and she thought it was associated with stress and menopause. She has noticed that lately she feels hot even in cold rooms.  She has lost 10 lbs unintentionally, has had diarrhea, has had changes in her hair and feels anxious.  Which of the following is true about the hormone causing this patient’s syndrome?
|Prompt=A 56-year-old woman presents to the emergency department for 2 hours of continuous palpitations. The patient reports that for the past 6 months, she has noticed similar episodes that seemed to resolve spontaneously within a few minutes. She felt very anxious when her symptoms persisted and decided to seek care. The patient explains that she hasn't been herself lately; she has been constantly irritable and has been having trouble adapting to the excessively hot weather.  She has lost 4.5 kg (10 lbs) unintentionally and has noticed that her hair is becoming thinner.  Which of the following is true about the hormone causing this patient’s syndrome?
|AnswerA=Decrease in glycogenoloysis
|AnswerA=It decreases cardiac fatty acid metabolism
|AnswerB=Decrease in the number of cardiac Beta1 receptors
|AnswerB=It decreases the number of cardiac β1 receptors
|AnswerC=Na+/K+ ATPase pump inhibition
|AnswerC=It inhibits the Na<sup>+</sup>/K<sup>+</sup> ATPase  
|AnswerD=Increase in cardiac output
|AnswerD=It increases the cardiac output
|AnswerE=Decrease in respiratory rate
|AnswerE=It increases cardiac contractility
|RightAnswer=D
|RightAnswer=D
|Approved=No
|Approved=No
}}
}}

Revision as of 14:17, 1 August 2014

 
Author [[PageAuthor::Gonzalo A. Romero, M.D. [1] (Reviewed by Serge Korjian)]]
Exam Type ExamType::USMLE Step 1
Main Category MainCategory::Biochemistry, MainCategory::Pathophysiology, MainCategory::Physiology
Sub Category SubCategory::Cardiology, SubCategory::Endocrine, SubCategory::Vascular, SubCategory::General Principles
Prompt [[Prompt::A 56-year-old woman presents to the emergency department for 2 hours of continuous palpitations. The patient reports that for the past 6 months, she has noticed similar episodes that seemed to resolve spontaneously within a few minutes. She felt very anxious when her symptoms persisted and decided to seek care. The patient explains that she hasn't been herself lately; she has been constantly irritable and has been having trouble adapting to the excessively hot weather. She has lost 4.5 kg (10 lbs) unintentionally and has noticed that her hair is becoming thinner. Which of the following is true about the hormone causing this patient’s syndrome?]]
Answer A AnswerA::It decreases cardiac fatty acid metabolism
Answer A Explanation AnswerAExp::
Answer B AnswerB::It decreases the number of cardiac β1 receptors
Answer B Explanation AnswerBExp::
Answer C [[AnswerC::It inhibits the Na+/K+ ATPase]]
Answer C Explanation AnswerCExp::
Answer D AnswerD::It increases the cardiac output
Answer D Explanation AnswerDExp::
Answer E AnswerE::It increases cardiac contractility
Answer E Explanation AnswerEExp::
Right Answer RightAnswer::D
Explanation [[Explanation::

Educational Objective:
References: ]]

Approved Approved::No
Keyword
Linked Question Linked::
Order in Linked Questions LinkedOrder::