Aged 1 Cardiac Surgical Procedures 1 Female 1 Humans 1 Length of Stay 1 Male 1 Middle Aged 1 Retrospective Studies 1 Thoracic Surgery, Video-Assisted 1 Treatment Outcome 1 adverse event 1 aged 1 cardiac surgery 1 female 1 heart surgery 1 hemopericardium 1 hemothorax 1 human 1 length of stay 1 male 1 middle aged 1 procedures 1 retained blood syndrome retrospective study 1 treatment outcome 1 video assisted thoracoscopic surgery 1 video-assisted thoracoscopic surgery 1