Dissectors for pulmonary thromboendarterectomy.

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Surgical Innovation

Background:

• Pulmonary thromboendarterectomy (PTE) is a complex procedure for chronic thromboembolic pulmonary hypertension.
• Maintaining a clear operative field during PTE, especially during circulatory arrest, is challenging due to back-bleeding.
• Current methods require frequent interruptions for suction, prolonging cardiopulmonary bypass time.

Purpose of the Study:

• To introduce and evaluate novel pulmonary thromboendarterectomy dissectors designed for simultaneous blood suction.
• To assess the impact of these new dissectors on the duration of circulatory arrest during PTE.
• To determine if integrated suction can improve surgical efficiency in PTE.

Main Methods:

• Development of specialized dissectors incorporating a suction channel.
• Application of these dissectors in a series of consecutive pulmonary thromboendarterectomy procedures.
• Comparison of circulatory arrest times between patients operated on before and after the introduction of the new dissectors.

Main Results:

• The mean circulatory arrest time in 124 patients prior to using the dissectors was 59 ± 23 minutes.
• In the last 10 patients who utilized the new dissectors, the mean circulatory arrest time was 52 ± 22 minutes.
• The observed reduction in circulatory arrest time was not statistically significant (p = not significant) in this initial cohort.

Conclusions:

• The novel pulmonary thromboendarterectomy dissectors facilitate simultaneous suction, addressing the challenge of operative field visualization.
• While initial results did not show a significant reduction in circulatory arrest time, a trend towards shorter durations was observed.
• Larger patient databases are anticipated to demonstrate a statistically significant benefit of these dissectors in shortening circulatory arrest time during PTE.