The Scar Cosmesis Assessment and Rating Scale To Evaluate The Cosmetic Outcomes of The Totally Thoracoscopic Cardiac Surgery
Abstract Background Conventional median sternotomy is widely used in cardiac surgery, while the totally thoracoscopic cardiac surgery which is considered to have aesthetic advantages now is increasingly used in China because patients' requirements for minimally invasive and aesthetically pleasing are significantly increased. Fewer studies have been conducted on the assessment of surgical scars after cardiac surgery. Compared to a median sternotomy approach, multiple-incision totally thoracoscopic cardiac surgery offers smaller but numerous and scattered incisions. In addition to two working ports on the upper and lower margins of the right breast, we also need an inguinal incision and an axillary incision. So, does totally thoracoscopic cardiac surgery really have aesthetic advantages? This study has the following objectives: (a) to compare the long term cosmetic effect of post-operative scars between median sternotomy cardiac surgery and totally thoracoscopic cardiac surgery; (b) to evaluate the effectiveness of the Scar Cosmesis Assessment and Rating(SCAR) scale, in combination with the Numeric Rating Scale(NRS) in the assessment of surgical scars after cardiac surgery. Methods Collection of consecutive patients who came to our institution from January 2019 to May 2019 for cardiac surgery via median sternotomy or totally thoracoscopic approach for at least one year of follow-up. Inter-rater reliability, internal consistency and convergent validity were evaluated for the SCAR scale and the NRS. Clinic characteristics and the scores of the SCAR scale and the NRS were analyzed using the Student's t test or Mann-Whitney U-test between the two groups. Results Thirty-one patients underwent cardiac surgery via a totally thoracoscopic approach (TA n = 31), and forty-two patients via a median sternotomy approach (SA n = 42). No significant differences were found in demographic and clinical data between the two groups. Validity and reliability of the SCAR scale and the NRS were satisfactory. The results of the SCAR scale showed that SA group scored significantly higher than TA group on “overall impression” and “patient questions” subscales with statistical significance (P < 0.05). The overall SCAR scale scores and the NRS scores were statistically significant (P < 0.05). Conclusions The SCAR scale in combination with the NRS is an effective tool for assessment of scar aesthetics after cardiac surgery. Surgical scars of totally thoracoscopic cardiac surgery can achieve desirable cosmetic effects in Chinese population. Especially in susceptible individuals with high risk of keloid and hypertrophic scars. Patients with appropriate indications can undergo cardiac surgery through the totally thoracoscopic approach and obtain a satisfactory scar appearance.