Effectiveness of Nonpharmacologic Therapies on Pain After Removal of Chest Drains in Postoperative Cardiac Surgery

The objective of this clinical trial is to determine the effectiveness of pain reduction between an experimental treatment and the usual one when removing thoracic drains in post cardiac surgery patients, in a Cardiovascular Critical Patient Unit, in Temuco, between the years 2024- 2026. Its safety will also be analyzed. The main questions to be answered are: \- What is the effectiveness of non-pharmacological therapies in reducing pain in the removal of chest drains in post-operated patient of cardiac surgery, in Cardiovascular Critical Patient Unit, Temuco, between the years 2024- 2026? Participants: * Two non-pharmacological therapies will be applied, to one group aromatherapy with lavender essential oils, which were previously submitted to oil property analysis. And another group with local cold therapy, there will also be a control group with the usual pharmacological therapy. * All the groups will receive the usual pharmacological treatment, the non pharmacological therapies will only be of support, in no case they will replace the usual medical therapy.