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'.

Question: 84-year-old man with severe respiratory failure secondary to carcinomatous lymphangitis associated with gastric cancer. A companion of his service has begun, that same day, treatment with oral morphine 10 mg / 4 hours. The patient is restless, at 34 breaths per minute, O2 saturation is 80% with an FiO2 of 28%. What should his attitude be? 
 Options:  <1> Withdraw treatment because it may worsen respiratory failure. <2> Increase the doses up to 20 mg / 4 hours according to evolution. <3> Increase oxygen flow to 35%. <4> Change the treatment of morphine by scopolamine. <5> To add to a treatment of a risperidon.
2

Question: A 65-year-old man with a history of pancreatic cancer undergoing chemotherapy. Emergency consultation for pain and edema of the entire lower limb from the groin. Which diagnostic test is more cost-effective to confirm the diagnostic suspicion? 
 Options:  <1> Dimer D. <2> Magnetic resonance. <3> Phlebography <4> Venous Doppler ultrasound. <5> Helical CT
4

Question: A 24-year-old woman with two weekly episodes of headache lasting between one and three days, hemicranial, intense, accompanied by sono and photophobia and nausea. As a preventive treatment, I would NOT consider one of these drugs: 
 Options:  <1> Propranolol <2> Flunarizine <3> Carbamazepine <4> Topiramate. <5> Nadolol

3