Clinical Study on the Effects of Pulmonary Vessels on Cryoablation and Preventive Embolization Strategies
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Pulmonary artery embolization.
- Who it may be relevant to
- Registry conditions: Lung Cancer. Basic parameters: 18 years — 80 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Center list to be confirmed — check the primary protocol.
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
This Study Aims to Provide New Evidence for Optimizing the Lung Cryoablation Strategy by Targeting High-risk Individuals With Incomplete Ice Ball Morphology in Lung Cryoablation. This is Achieved Through the Use of Selective Pulmonary Artery Embolization.
Overview
This study targeted high-risk individuals with incomplete ablation and performed selective pulmonary artery embolization before lung cryoablation, which could enhance the therapeutic effect and reduce the risk of intraoperative bleeding. Previous studies have shown that selective pulmonary artery embolization before ablation has no adverse reactions related to embolization. In this study, gelatin sponge particles were used for selective pulmonary artery embolization. Gelatin sponge is an absorbable embolic material that can be absorbed and degraded in the human body within about 7 days, which has high safety and a low probability of adverse reactions. The surgical risks are detailed in the surgical protocol. The study aims to optimize the lung cryoablation strategy for high-risk individuals with incomplete ablation, aiming to improve the prognosis of high-risk recurrent patients. The two groups of patients underwent lung CT reexamination every three months after surgery to observe the tumor ablation situation.
Interventions
- Procedure Pulmonary artery embolization
In this study, using DSA guidance, gelatin sponge particles were used to artificially embolize the thicker pulmonary arteries around the tumor, thereby reducing the heat sink effect and complications, and improving the efficacy of lung cryoablation.
Primary outcome measures
- ablation zone [Time frame: Immediately assess the extent of the ablation after the ablation needle is withdrawn.]
Eligibility criteria
Inclusion criteria
- Individuals at high risk of incomplete ablation (for example, there are vessels with a diameter greater than 3mm within 1cm around the pulmonary nodule);
- Scheduled for lung cryoablation, meeting the surgical indications and without any specific contraindications;
- The long diameter of the lung tumor is less than 3cm;
- The single cryoablation needle will be used. -
Exclusion criteria
- Postoperative complications such as massive pneumothorax and bleeding occurred, which affected the observation of the ice ball's shape;
- Poor image quality or incomplete images. -
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
Center list to be confirmed — check the primary protocol.
Identifiers
NCT: NCT07594834 · 2026GSlungcryo