Implantation of monocusp valve prolongs the duration of chest tube drainage in children with tetralogy of fallot after corrective surgery

Shao Wei Huang, Wan Fu Hsu, Hsing Yuan Li, Betau Hwang, Fei Yi Wu, Zen Chung Weng, Chieh Mao Chuang, Shyi Jou Chen, Chih Chien Wang, Der Shiun Wang, Pi Chang Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Background: Right ventricular outflow tract obstruction relief is one of the major procedures during the total correction of tetralogy of Fallot (TOF). Pulmonary insufficiency (PI) is usually inevitable after a transannular incision with a patch repair is performed. Therefore, some surgeons advocate to place a monocusp valve within the transannular patch (TAP) in order to decrease the severity of the PI. However, the monocusp valve seemed not be very effective in some patients who underwent the complete TOF repair. Methods: Patients who had the classic form of TOF between January 2009 and January 2017 and underwent the corrective surgery with a TAP by the same cardiovascular surgeon were identified for further analysis. Clinical information including demographics at operation, perioperative data, and postoperative outcome were collected retrospectively and compared between the group with and without a monocusp valve. Results: A total of 24 TOF cases were included in the final analysis, and 16 (66.7%) patients received a monocusp valve placement. The patients' characteristics before and during the surgery were similar between the two groups. The median duration of chest tube drainage after the total correction in the monocusp group was longer than those without the valve (p = 0.04). There was no difference in the immediate postoperative data, including the inflammation/infection status, the duration of mechanical ventilation, and the length of ICU and hospital stay. Conclusion: Implantation of a monocusp valve during the total TOF correction using a TAP did not bring benefit to improve the immediate postoperative outcomes, especially the duration of the pleural drainage. Further study with a prospective design and a larger number of cases is needed.

Original languageEnglish
Pages (from-to)364-368
Number of pages5
JournalJournal of the Chinese Medical Association
Issue number3
StatePublished - 1 Mar 2022


  • Chest tube
  • Monocusp valve
  • Pleural effusion
  • Pulmonary insufficiency
  • Tetralogy of Fallot
  • Transannular patch


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