Perception of Long-Term Oxygen Therapyfor Chronic Lung Diseases May Affect Poor Adherence in Korea / 결핵및호흡기질환

Background@#Long-term oxygen therapy (LTOT) improves the survival of patients with hypoxemia due to chronic respiratory diseases. The clinical outcomes of LTOT are strongly associated with patient adherence. To improve the adherence of patients, physicians have focused on the efficacy of LTOT. However, poor adherence may stem from patients’ perceptions of LTOT. Herein we evaluated patients’ perceptions of LTOT affecting adherence. @*Methods@#We conducted a cross-sectional survey study using descriptive, open, and closed-ended questionnaire. Patients using oxygen therapy (OT) or requiring it but avoiding OT responded to the questionnaires at three university hospitals. @*Results@#Seventy-nine patients responded to the questionnaires. The number of patients using home and portable OT was 69 (93%) and 37 (46.3%), respectively. Patients with good adherence were 22 (30.1%). Among patients with good adherence, 90.9% used oxygen according to physicians’ prescriptions whereas only 37.3% of those with poor adherence followed physicians’ prescriptions (p<0.01). The reasons for avoiding using home OT were fear of permanent use (50%), unwanted attention (40%), and lack of symptoms (40%). They avoided portable OT because of unwanted attention (39%), heaviness (31.7%), and lack of symptoms (21.6%). @*Conclusion@#Patients on LTOT had the perception of the misunderstanding the effects of OT and of psychosocial barriers to initiate or use LTOT. Considering these findings, health professionals need to provide effective education on the purpose of LTOT to improve patient adherence to OT and provide sufficient support for the management of psychosocial barriers in patients using LTOT.

CT Follow-Up of Postoperative Bronchopleural Fistula:Risk Factors for Progression to Chronic Complicated Infection

Purpose@#We evaluated the risk factors for progression to chronic complicated bronchopleural fistula (BPF) after pulmonary resection using follow-up CT. @*Materials and Methods@#We retrospectively reviewed 45 cases with BPF that had undergone pulmonary resection during 2010-2018. We compared the clinical and radiological characteristics of those with complicated BPF (n = 24) and those without complicated (sterilized) BPF (n = 21). The clinical and radiological risk factors for progression to chronic complicated BPF were examined by logistic regression analysis. @*Results@#The thickness of the pleural cavity wall (p = 0.022), the size of the pleural cavity (p = 0.029), and the size increase of BPF on follow-up (p = 0.012) were significantly different between the two groups. The risk factors for progression to chronic complicated BPF were age > 70 years (odds ratio, 6.43; 95% confidence interval, 1.2–33.7), the thickness of the cavity wall > 5 mm (odds ratio, 52.5; 95% confidence interval, 5.1–545.4), and an increase in the size of the pleural cavity on follow-up CT (odds ratio, 12.5; 95% confidence interval, 2.1–73.5), only in the univariate analysis. @*Conclusion@#The risk factors for progression to chronic complicated BPF can be evaluated using follow-up CT.

Intermediate risk of multidrug-resistant organisms in patients who admitted intensive care unit with healthcare-associated pneumonia

BACKGROUND/AIMS: Healthcare-associated pneumonia (HCAP) was proposed asa new pneumonia category in 2005, and treatment recommendations includebroad-spectrum antibiotics directed at multidrug-resistant (MDR) pathogens.However, this concept continues to be controversial, and microbiological data arelacking for HCAP patients in the intensive care unit (ICU). This study was conductedto determine the rate and type of antibiotic-resistant organisms and theclinical outcomes in patients with HCAP in the ICU, compared to patients withcommunity-acquired pneumonia (CAP) or hospital-acquired pneumonia (HAP). METHODS: We conducted a retrospective cohort analysis of patients with pneumonia(n = 195) who admitted to medical ICU in tertiary teaching hospital fromMarch 2011 to February 2013. Clinical characteristics, microbiological distributions,treatment outcomes, and prognosis of HCAP (n = 74) were compared tothose of CAP (n = 75) and HAP (n = 46). RESULTS: MDR pathogens were significantly higher in HCAP patients (39.1%) thanin CAP (13.5%) and lower than in HAP (79.3%, p < 0.001). The initial use of inappropriateantibiotic treatment occurred more frequently in the HCAP (32.6%) andHAP (51.7%) groups than in the CAP group (11.8%, p = 0.006). There were no differencesin clinical outcomes. The significant prognostic factors were pneumoniaseverity and treatment response. CONCLUSIONS: MDR pathogens were isolated in HCAP patients requiring ICU admissionat intermediate rates between those of CAP and HAP.

Successful Removal of Endobronchial Blood Clots Using Bronchoscopic Cryotherapy at Bedside in the Intensive Care Unit / 결핵및호흡기질환

Acute airway obstruction after hemoptysis occurs due to the presence of blood clots. These conditions may result in life-threatening ventilation impairment. We report a case of obstruction of the large airway by endobronchial blood clots which were removed using bronchoscopic cryotherapy at the bedside of intensive care unit. A 66-year-old female with endometrial cancer who had undergone chemotherapy, was admitted to the intensive care unit due to neutropenic fever. During mechanical ventilation, the minute ventilation dropped to inadequately low levels and chest radiography showed complete opacification of the left hemithorax. Flexible bronchoscopy revealed large blood clots obstructing the proximal left main bronchus. After unsuccessful attempts to remove the clots with bronchial lavage and forceps extraction, blood clots were removed using bronchoscopic cryotherapy. This report shows that cryotherapy via flexible bronchoscopy at the bedside in the intensive of intensive care unit is a simple and effective alternative for the removal of endobronchial blood clots.

Percutaneous Dilatational Tracheostomy in Critically Ill Patients Taking Antiplatelet Agents / 대한구급학회지

BACKGROUND: Percutaneous dilatational tracheostomy (PDT) has been considered as an alternative to surgical tracheostomy in intensive care units (ICU), and is widely used for critically ill patients who need prolonged mechanical ventilation. Few studies have reported on PDT performed in critically ill patients taking antiplatelet agents. Our goals are to assess not only the feasibility and safety of PDT, but also bleeding complications in the patients receiving such therapy. METHODS: In a single institution, PDTs were performed by pulmonologists at the medical ICU bedside using the single tapered dilator technique and assisted by flexible bronchoscopy to confirm a secure puncture site. From March 2011 to February 2013, the patients' demographic and clinical data, procedural parameters, outcomes and complications were analyzed and compared complications between patients taking antiplatelet agents and those not. RESULTS: PDTs were performed for 138 patients; the median age was 72 years, mean body mass index was 20.3 +/- 4.8 kg/m2, and mean acute physiology and chronic health evaluation II score was 24.4 +/- 9.4. Overall, the procedural success rate was 100% and the total procedural time was 25 +/- 8.5 min. There were no periprocedural life-threatening complications, and no statistical difference in the incidence of bleeding complications between patients who had taken antiplatelet agents and those had not (p = 0.657). CONCLUSIONS: PDT performed in critically ill patients taking antiplatelet agents was a feasible procedure and was implemented without additional bleeding complications.

A Case of Laryngeal Mask Airway-Assisted Percutaneous Dilatational Tracheostomy / 대한구급학회지

Percutaneous dilatational tracheostomy (PDT) is a widely used method to perform tracheostomy in the critical care medicine for patients who need prolonged mechanical ventilation. Traditionally, PDT has been facilitated by bronchoscopy via the endotracheal tube. However, there are risks for blocking the view of correct puncture site on the trachea or being extubated unintentionally, which lead to loss of the airway. These complications are possibly due to insufficient bronchoscopic visualizations via endotracheal tube during the procedure. Using laryngeal mask airways (LMA) during PDT may overcome these problems and could provide a safer alternative method with superior visualizations of the trachea and larynx. We report a case of percutaneous tracheostomy being performed successfully under bronchoscopy with LMA in the intensive care unit.