If a patient frequently experiences difficulty in breathing, it is recommended to immediately adopt a sitting position, as this can reduce the load on the heart, thereby alleviating expansion. Currently, for the purpose of treating breathing difficulties, conditions like pericardial effusion are very serious, and puncture aspiration for examination can be chosen as a treatment. For heart failure caused by pericardial effusion, sometimes it is necessary to use some cardiotonic diuretics, thus improving the patient's breathing difficulties. Currently, symptomatic treatment is primarily adopted in therapy, mainly adopting a semi-recumbent position or dangling both legs, which can reduce the heart's afterload, thereby easing the patient's condition.