In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

[Q]: Question: Epidemiology allows early detection of changes in the incidence of a certain disease in the population. For this, the most correct thing is to use: 
 Options:  <0> The etiological investigation. <1> The description of the natural history of the disease. <2> Epidemiological surveillance. <3> The evaluation of the functioning of the services. <4> None of the previous answers is correct.
[A]: nursery


[Q]: Question: A 58-year-old woman enters the Short Stay Medical Unit due to a clinical picture that began with an episode of syncope and then presented feeling of dizziness and dyspnea. On physical examination, she is sweaty, afebrile at 126 beats per minute and at 30 breaths per minute, with a blood pressure of 88/46 and an oxygen saturation of 85% while breathing room air. Cardiac auscultation shows tachycardia without murmurs or gallop and pulmonary auscultation is clean. Which, among the following, seems the most likely diagnosis? 
 Options:  <0> Pulmonary embolism. <1> Acute cerebrovascular accident of posterior territory. <2> Acute coronary syndrome <3> Hypovolemic shock. <4> Acute pulmonary edema secondary to atrial flutter.
[A]: medicine


[Q]: Question: In a 14-year-old patient with Down syndrome who presents with nucalgia (normal neurological examination) and is going to be subjected to general anesthesia (orotracheal intubation) for elective abdominal surgery, the following should be ruled out: 
 Options:  <0> Atloaxoid instability. <1> Tracheoesophageal fistulas. <2> Brain tumor. <3> Vocal cord hyperplasia. <4> Hydrocephalus
[A]:
medicine