ObjectiveTo evaluate the difference between the tracheal intubation connected to conventional ventilation (TI-CV) and rigid bronchoscopy connected to high frequency ventilation (RB-HFV) under general anesthesia on patients with transbronchial cryobiopsy (TBCB).MethodA prospective, randomized, controlled trial was conducted in interstitial lung disease patients with TBCB from August 2018 to February 2019 in the First Affiliated Hospital of Guangzhou Medical University. According to the different methods of intubation, the patients were divided to a TI-CV group and a RB-HFV group randomly. The operating duration, extubation duration, total anesthesia time, heart rate, blood pressure and arterial blood gas analysis were collected and analyzed.ResultsSixty-five patients were enrolled. There were 33 patients with an average age of (48.0±15.0) years in TI-CV group and 32 patients with an average age of (48.8±10.8) years in RB-HFV group. The basic line of body mass index, pulmonary function (FEV1, FVC and DLCO), arterial blood gas (pH, PaO2 and PaCO2) and heart rate (HR), mean arterial pressure (MAP) had no significant differences between two groups. At the first 5 minutes of operation, the pH was (7.34±0.06) and (7.26±0.06), and the PaCO2 was (48.82±9.53) and (62.76±9.80) mm Hg in TI-CV group and RB-HFV group respectively, with significant differences (P=0.000). At the end of operation, the pH was (7.33±0.06) and (7.21±0.08), the PaCO2 was (48.91±10.49) and (70.93±14.83) mm Hg, the HR were (79.6±21.1) and (93.8±18.7) bpm, the MAP were (72.15±13.03) and (82.63±15.65) mm Hg in TI-CV group and RB-HFV group respectively, with significant differences (P<0.05). There were no differences in the operating duration and extubation duration between two groups. The total anesthesia time was (47.4±8.8) and (53.3±11.6) min with significant difference (P=0.017). Five minutes after the extubation, there were no significant difference in the pH, PaO2, PaCO2, HR and MAP between two groups. No serious complications occurred in either group.ConclusionsCompared with rigid bronchoscopy, TI-CV under general anesthesia is more conducive to maintain effective ventilation, and maintain the HR and MAP stable during the TBCB procedure. TBCB procedure should be performed by TI-CV under general anesthesia in patients with poor cardiopulmonary function.
Acute respiratory distress syndrome is a clinical syndrome caused by many reasons, which is characterized by intractable hypoxemia. Its etiology is complex and its mortality is high. Lung biopsy techniques can give accurate histopathological diagnosis to such patients to guide treatment and improve prognosis. At present, lung biopsy techniques include surgical lung biopsy, transbronchial lung cryobiopsy, transbronchial lung biopsy and percutaneous lung biopsy. The diagnostic rate of surgical lung biopsy is high, but it is traumatic and difficult to implement. The diagnostic rate of transbronchial cryobiopsy is relatively high, and the complications are acceptable. Transbronchial lung biopsy is minimally invasive but the diagnostic rate is low. The diagnostic rate of percutaneous lung biopsy is relatively high, and the complications are relatively few. For patients with acute respiratory distress syndrome who need lung biopsy, it is very important to choose different surgical procedures according to their effectiveness, safety and applicability.
Objective To explore the clinical diagnostic value of transbronchial cryobiopsy (TBCB) for lung diseases. Methods All patients who underwent TBCB in the bronchoscopy room of West China Hospital, Sichuan University from November 5, 2020 to August 7, 2024 were consecutively included. Clinical information of the patients was collected, and the distribution of pathological diagnosis, clinical diagnosis, and the consistency between the two were statistically analyzed. The distribution of diagnosis and the consistency with pathological diagnosis of interstitial lung disease (ILD) were analyzed. The distribution of diagnosis of patients who underwent more than two lung biopsies was summarized. Results A total of 351 TBCB patients were included. The concordance rate between the overall pathological diagnosis and the clinical diagnosis was 68.66%. Among 351 patients who underwent TBCB, 199 cases were diagnosed as ILD by pathological diagnosis, and the consistency rate with the clinical diagnosis was 90.45%. 22 cases were pathologically suggested or suspected of tumor by pathology, and the final consistency rate with clinical diagnosis was 95.45%. Descriptive pathological conclusions were found in 74 cases. The clinical diagnosis of ILD was 255 cases, and the diagnostic rate of TBCB was 71.76%. 83 cases of immune-related ILD (diagnostic rate 83.13%); 75 cases of idiopathic interstitial pneumonia (diagnostic rate 44.00%); There were 59 cases of ILD with cysts and/or air Spaces (diagnostic rate 83.05%). 33 cases of exposion-associated ILD (diagnostic rate 81.82%); 5 cases of pulmonary sarcoidosis (diagnostic rate 100.00%). Among them, 28 patients underwent lung biopsy more than twice, and the disease distribution was mainly ILD. Conclusion TBCB has significant value in the auxiliary clinical diagnosis of lung diseases, especially interstitial lung diseases, with the greatest advantages in the auxiliary diagnosis of PAP, tumors, and IIP.