In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Q: Question: What element plays a physiological role in the prevention of gastroesophageal reflux? 
 Options:  <1> Upper esophageal sphincter <2> Angle of His. <3> Hernia of Hiato. <4> Purkinje angle. <5> Pyloric sphincter

A: 2
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Q: Question: Question linked to image nº7 A 31-year-old patient, with no previous history of interest, consulted due to muscle weakness of a few months of evolution that has progressively made it difficult for her to go up and down stairs. Physical examination is notable for the desquamative papuloerithematous lesions seen in the figure. To achieve the diagnosis, a muscle biopsy is performed, among other tests, which can be seen in the figure. What do you think is the most likely diagnosis? 
 Options:  <1> Vasculitis type panarteritis nodosa. <2> Systemic lupus erythematosus. <3> Dermatomyositis <4> Myositis with inclusion bodies. <5> Sarcoidosis

A: 3
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Q: Question: In a patient with hepatic cirrhosis and ascites, which develops a pleural effusion with the following data in the pleural fluid: LDH 45 U / L (serum 220 U / L), protein ratio pleura / serum 0.3 and ratio LDH pleura / serum 0.2. What would be the right attitude? 
 Options:  <1> The study of the fluid with cell count, glucose, pH, ADA, cholesterol and culture should be expanded. <2> Blind pleural biopsy. <3> Diagnostic video-assisted thoracoscopy. <4> Empirical antibiotic therapy for suspected parapneumonic effusion. <5> Continue the treatment of your liver disease.

A:
5
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