Definition: 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'.
Input: Question: Central Venous Pressure (PVC) monitoring is a procedure performed frequently by nurses in the Critical Care Unit. Indicate the correct option regarding the performance of this hemodynamic measurement:
Options: <1> It is only possible to perform it using electronic pressure transducers, expressing the measurement in cmH2O. <2> It is only possible to carry it out by using electronic pressure transducers, expressing the measurement in mmHg. <3> It can only be done through the distal lumen of a pulmonary artery catheter. <4> It can be done by using electronic pressure transducers and pressure gauges with a water column. <5> It is a good reflection of the functioning of the left ventricle.
Output:
4