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'.
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Question: Question: Liquid chromatography in normal phase: 
 Options:  <1> It uses a column with apolar groups that interact with the apolar part of the analytes differentially. <2> It is a mode of operation that employs a polar stationary phase with a low polarity mobile phase. <3> It uses highly polar mobile phases such as alkanes or chloroalkanes. <4> It is a mode of operation that employs a non-polar surface with a mixed aqueous / organic mobile phase. <5> It uses stationary phases with a large number of hydrophobic alkyl ligands.

Answer: 2


Question: Question: A 45-year-old man underwent a truncal vagotomy and antrectomy with Billroth II reconstruction, for suffering from a chronic peptic ulcer disease with pylorus-duodenal stenosis. Six weeks after the surgery, he reported that shortly after (less than half an hour) of the ingestions he presented with a nauseating state, asthenia and sweating, dizziness and abdominal cramps, usually accompanied by diarrheal descent. Which of the following is the most appropriate attitude for its initial management? 
 Options:  <1> Apply treatment with a somatostatin analog (octeotide). <2> Follow specific dietary measures. <3> Perform a test treatment with a benzodiazepine. <4> Perform the search for a probable neuroendocrine tumor (eg, carcinoid). <5> Indicate surgical treatment to perform an anti-peristaltic gastro-jejunostomy in Roux-en-Y.

Answer: 2


Question: Question: A 54-year-old man is diagnosed with a left kidney tumor suggestive of renal cell carcinoma. In his preoperative analytical study, elevated levels of GPT, alkaline phosphatase and alpha-2-globulin and elongated prothrombin time are detected. The liver is enlarged diffusely, but without defects of hepatic infiltration. The most probable justification for these findings is due to: 
 Options:  <1> Liver metastases. <2> Intrahepatic tumor thrombosis. <3> Acute hepatitis <4> Presence of hepatotoxic substances produced by the tumor. <5> Hemochromatosis

Answer:
4