Question: A 70-year-old man should undergo cataract extraction surgery. He has a mitral mechanical prosthesis for 10 years and is being treated with acenocoumarol. The electrocardiogram shows a sinus rhythm. Which of the following recommendations do you find most appropriate? 
 Options:  <1> Perform eye surgery without stopping acenocoumarol. <2> Suspend acenocoumarol 5 days before surgery and restart it the day after it. <3> Suspend acenocoumarol 5 days before surgery, start low molecular weight heparin 3 days before surgery and suspend it 24 hours before surgery. <4> Suspend acenocoumarol 1 day before the intervention and use fresh frozen plasma during it. <5> Suspend acenocoumarol 1 day before the intervention and give vitamin K just before it.
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