Safety and efficacy of video DLT (VDLT) for lung isolation during the COVID-19 pandemic.

One lung ventilation (OLV) with collapse of the ipsilateral lung is a prerequisite for most thoracic surgical procedures. Double-lumen tube (DLT) is still the preferred method to isolate the lungs and fiberoptic bronchoscopy (FOB) is the gold standard for the confirmation of correct placement of the DLT. However, both these procedures are considered as a high-aerosol-generating procedures and are hazardous to the health workers, particularly at this time of the COVID-19 pandemic. We did nine thoracic surgery cases categorized as essential, requiring OLV during the ongoing period of the COVID-19 between April 2020 and May 2020 where we used Full view DLT for lung isolation. We present our case series which shows that the Full view VDLT can minimize or circumvent the use of FOB during OLV, and reduce the time taken to isolate the lungs thus reducing aerosol in the theater. None of the nine patients required FOB for confirmation of initial positioning nor for diagnosis of intraoperative malposition. The time taken to isolate the lungs was significantly less and the surgical positioning was done under real-time monitoring by visualizing the blue cuff distal to carina at all times. The real-time monitoring by the Full view VDLT offers the additional advantage of detecting any malposition even before it results in loss of isolation or desaturation. We conclude that the Full view VDLT is an efficient and safe alternative for lung isolation at this time of the COVID-19 pandemic.

136. Telemedicine for Adolescent and Young Adult Long-acting Reversible Contraception Initial Follow-up Visit: Outcomes Over 1 Year

Purpose: Telemedicine for adolescent and young adult (AYA) care, including long-acting reversible contraception (LARC) care, was quickly implemented in response to the COVID-19 pandemic. Therefore, outcomes of telemedicine LARC care is understudied. We compare outcomes of AYAs receiving LARC follow-up care via telemedicine and in-person over 1 year. Methods: This cohort study includes patients who had LARC, intrauterine device (IUD) or implant, inserted between 4/1/20-3/31/21 and attended an initial LARC follow-up visit at 4 US Adolescent Medicine clinics. Initial LARC follow-up visit was defined as the first visit within 12 weeks of insertion. Eligible patients were 13-26 years old, had LARC inserted without sedation, and had LARC in place for at least 12 weeks. We compared outcomes over 1 year between patients attending the initial follow-up visit via telemedicine (telemedicine attendees) to those who completed the visit in-person (in-person attendees). Outcomes included patient-reported side effects, medical menstrual management, acne management, IUD malposition or expulsion, sexually transmitted infection (STI) testing and results, and LARC removal. Descriptive statistics described the sample and compared groups. Adjusted Poisson regression examined factors associated with number of visits and adjusted logistic regression models examined the association between initial visit modality and initiation of medical menstrual management. Site-specific institutional review board approvals were obtained. Results: Our study included 194 AYAs, ages 13.9-25.7 years (mean 18.7 years, SD = 2.3) who attended an initial follow-up visit. Most AYAs (n = 168, 86.6%) attended only one visit in the 12 weeks post-insertion. Telemedicine attendees comprised 40.2% of the sample. Telemedicine and in-person attendees were similar with regards to site of LARC insertion (p =.43), age (p =.17), race/ethnicity (p =.25), prior pregnancy (p =.95), complex medical diagnoses (p =.32), menstrual diagnoses (p =.11), and reason for LARC (p =.82). In-person attendees were more likely to have the IUD than telemedicine attendees (p =.003). Bivariate analyses showed similar frequency of patient-reported symptoms over 1 year between groups. Outcomes of menstrual management (OR = 1.02, CI: 0.40-2.60), number of visits attended (RR = 1.08, CI: 0.99-1.19), acne management (p =.28), IUD expulsion (p =.13), IUD malposition (p =.51), and LARC removal (p =.95) were similar between groups. In-person attendees were more likely to have STI testing done (p =.001) than telemedicine attendees. However, no positive STI tests were captured in either group. Conclusions: Roughly two-fifths of patients presenting to an initial LARC follow-up visit did so via telemedicine. Type of LARC may influence modality of follow-up visit. Except for STI testing, outcomes over 1 year were similar regardless of the first visit modality. Reassuringly, no positive STI tests were detected in either group over 1 year of follow-up. More research is needed to determine if the decrease in STI testing for patients seeking care via telemedicine is clinically significant. Telemedicine may play an important role in AYA LARC follow-up care, and more research is needed in this area. Sources of Support: N/a.

Recent advances in double-lumen tube malposition in thoracic surgery: A bibliometric analysis and narrative literature review.

Thoracic surgery has increased drastically in recent years, especially in light of the severe outbreak of the 2019 novel coronavirus disease (COVID-19). Routine "passive" chest computed tomography (CT) screening of inpatients detects some pulmonary diseases requiring thoracic surgeries timely. As an essential device for thoracic anesthesia, the double-lumen tube (DLT) is particularly important for anesthesia and surgery. With the continuous upgrading of the DLTs and the widespread use of fiberoptic bronchoscopy (FOB), the position of DLT in thoracic surgery is gradually becoming more stable and easier to observe or adjust. However, DLT malposition still occurs during transferring patients from a supine to the lateral position in thoracic surgery, which leads to lung isolation failure and hypoxemia during one-lung ventilation (OLV). Recently, some innovative DLTs or improved intervention methods have shown good results in reducing the incidence of DLT malposition. This review aims to summarize the recent studies of the incidence of left-sided DLT malposition, the reasons and effects of malposition, and summarize current methods for reducing DLT malposition and prospects for possible approaches. Meanwhile, we use bibliometric analysis to summarize the research trends and hot spots of the DLT research.