Daily Ards Research Analysis
Across three ARDS-focused reports, a large German VV-ECMO registry quantifies a high burden of bleeding and thromboembolic complications and analyzes determinants of ICU survival, a Taiwanese cohort compares severe influenza outcomes with and without ECMO emphasizing antiviral timing, and a rare hydatid cyst fistulization case underscores aggressive surgical management and ARDS/sepsis complications. Together, these studies inform risk mitigation on ECMO, timing of antivirals, and surgical decisi
Summary
Across three ARDS-focused reports, a large German VV-ECMO registry quantifies a high burden of bleeding and thromboembolic complications and analyzes determinants of ICU survival, a Taiwanese cohort compares severe influenza outcomes with and without ECMO emphasizing antiviral timing, and a rare hydatid cyst fistulization case underscores aggressive surgical management and ARDS/sepsis complications. Together, these studies inform risk mitigation on ECMO, timing of antivirals, and surgical decision-making in catastrophic presentations.
Research Themes
- ECMO complications and risk stratification in ARDS
- Severe influenza ARDS outcomes and antiviral timing
- Catastrophic surgical presentations with ARDS complications
Selected Articles
1. Impact of bleeding and thrombosis on outcome of 945 COVID-19 VV-ECMO cases from a German registry.
In a retrospective analysis of 945 COVID-19 VV-ECMO cases in Germany, bleeding and thromboembolic events were frequent, affecting 75% of patients with 1,348 events recorded. Major bleeding accounted for 30% and major thromboembolic events for 19%, with intracranial bleeding the most common major bleeding location. Logistic regression was used to assess determinants of ICU survival and BTE risk.
Impact: This large registry quantifies the burden and patterns of bleeding and thrombosis on ECMO for COVID-19 ARDS and examines determinants of survival, informing anticoagulation and monitoring strategies.
Clinical Implications: ECMO teams should anticipate high rates of bleeding (including intracranial) and thrombosis, implement vigilant surveillance, and tailor anticoagulation to minimize both complications while preserving circuit patency.
Key Findings
- Bleeding and thromboembolic events occurred in 708 of 945 patients (75%).
- A total of 1,348 events were recorded: 406 (30%) major bleeding and 258 (19%) major thromboembolic events.
- Intracranial hemorrhage was the most common major bleeding location.
- Logistic regression was used to identify factors affecting ICU survival and risks of BTE.
Methodological Strengths
- Large multicenter registry (N=945) with predefined event categorization by location and severity
- Multivariable logistic regression to explore determinants of ICU survival and BTE risk
Limitations
- Retrospective registry design limits causal inference
- Potential underreporting or misclassification of events inherent to registry data; center-level practice variation likely
Future Directions: Prospective, standardized anticoagulation protocols and risk-stratification tools are needed to reduce intracranial bleeding and thromboembolic complications during VV-ECMO for ARDS.
UNLABELLED: Bleeding and thromboembolic events (BTE) increase the mortality of COVID-19 acute respiratory distress syndrome (ARDS) treated with extracorporeal membrane oxygenation (ECMO). The current analysis aimed to assess frequency and determinants of BTE according to their location and severity in a retrospective analysis of the German ECMO COVID-19 registry. Logistic regression was applied to identify factors influencing ICU survival as well as variables associated with risks of BTE. In total, 708 of 945 patients (75%) suffered from BTE. Overall, 1,348 events were registered, including 406 (30%) major bleeding and 258 (19%) major thromboembolic events. Most common major bleeding locations were intracranial ( CLINICAL TRIAL REGISTRATION: Registered in the German Clinical Trials Register (study ID: DRKS00022964), retrospectively registered, September 7th 2020, https://drks.de/DRKS00022964.
2. Clinical Characteristics and Outcomes in Patients with Severe Influenza with or without Extracorporeal Membrane Oxygenation in Taiwan.
In 52 severe influenza cases (96.2% ARDS), ECMO was used in 16 patients for a median of 9 days; ECMO recipients were younger, but in-hospital mortality did not differ significantly versus non-ECMO (68.8% vs 44.4%). Delayed oseltamivir initiation was common among ECMO patients, highlighting the importance of early antiviral treatment.
Impact: Provides real-world outcome data on severe influenza-related ARDS with and without ECMO and underscores antiviral timing as a modifiable factor.
Clinical Implications: ECMO candidacy should be integrated with early diagnostic pathways and prompt antiviral initiation to prevent progression to ARDS and potential need for ECMO.
Key Findings
- Among 52 severe influenza patients, 50 (96.2%) had ARDS and 27 (51.9%) died.
- ECMO was used in 16 (30.8%) for a median of 9 days; ECMO patients were younger (P=0.015).
- In-hospital mortality did not differ significantly between ECMO and non-ECMO groups (68.8% vs 44.4%).
- In the ECMO cohort, 75% started oseltamivir ≥48 hours after illness onset, suggesting delayed antiviral therapy.
Methodological Strengths
- Clear inclusion of severe influenza with comprehensive reporting of ARDS and organ dysfunction
- Direct comparison of ECMO versus non-ECMO groups with reported P-values
Limitations
- Single-center retrospective design with small sample size, limiting power and generalizability
- Non-randomized treatment allocation introduces selection bias
Future Directions: Prospective multicenter studies to define optimal antiviral timing and ECMO initiation criteria in severe influenza-related ARDS.
Annual influenza epidemics contribute to a substantial global burden of illness and death. This study aims to evaluate clinical outcomes among patients with severe influenza, comparing those who received extracorporeal membrane oxygenation (ECMO) with those who did not. A retrospective study was conducted at Kaohsiung Chang Gung Memorial Hospital involving adult patients diagnosed with influenza between 2015 and 2019. The inclusion criteria encompassed patients with influenza exhibiting severe clinical manifestations. Of 52 severe influenza patients, 51 (98.1%) were invasively ventilated; acute respiratory distress syndrome (ARDS) was identified in 50 (96.2%) patients, and acute kidney injury was identified in 37 (71.2%) patients. Among these patients, 27 (51.9%) died. A subset of 16 (30.8%) patients was treated with ECMO, with 14 (87.5%) infected with the influenza A virus and 12 (75%) receiving oseltamivir ≥48 hours after illness onset. All ECMO patients had pneumonia and required mechanical ventilation, with 14 (87.5%) developing ARDS. The median duration of ECMO support was 9 days. Patients treated with ECMO were significantly younger compared with those not receiving ECMO (P = 0.015). No significant differences were observed in terms of in-hospital mortality between the groups with and without ECMO (68.8% versus 44.4%). Although ECMO is indicated for patients with ARDS who are unresponsive to conventional therapy, early diagnosis and timely initiation of antiviral treatment are essential to prevent progression to ARDS. This study provides comprehensive understanding and management of severe influenza, advocating for standardized treatment protocols and a multidisciplinary approach to enhance patient outcomes.
3. Unforeseen pulmonary destruction following hepatic hydatid cyst fistulization: A case report of emergency pneumonectomy in a critically ill patient.
A rare transdiaphragmatic fistula from a hepatic hydatid cyst caused complete right lung destruction and massive airway contamination, necessitating emergency pneumonectomy. The postoperative course was complicated by ARDS and Acinetobacter sepsis, underscoring the need for early diagnosis and decisive surgery in endemic regions.
Impact: Although a single case, it illustrates a catastrophic pathway to lung loss with subsequent ARDS and sepsis, highlighting diagnostic vigilance and operative strategy in hydatid disease.
Clinical Implications: In endemic areas, clinicians should consider transdiaphragmatic fistulization in rapidly deteriorating pulmonary presentations and escalate to definitive surgery when irreversible destruction is evident, while preparing for ARDS and nosocomial sepsis.
Key Findings
- A hepatic hydatid cyst formed a giant transdiaphragmatic fistula into the right lung, causing complete pulmonary destruction and massive tracheobronchial aspiration.
- Emergency right pneumonectomy was performed due to irreversible lung damage; intraoperative findings included heavy adhesions and a scolex-laden fistula.
- Postoperative complications included ARDS and Acinetobacter sepsis, requiring prolonged ICU care with eventual successful follow-up.
Methodological Strengths
- Detailed perioperative description including intraoperative findings and postoperative ICU course
- Clear linkage of pathophysiology (hydatid fistulization) to surgical decision-making and complications
Limitations
- Single-patient case report limits generalizability
- No comparative data to establish optimal timing or approach for surgery
Future Directions: Develop diagnostic algorithms and surgical criteria for suspected transdiaphragmatic hydatid fistulas, and evaluate perioperative strategies to mitigate ARDS and infection risks.
Direct fistulization of a hepatic hydatid cyst into the lung, causing rapid pulmonary destruction, is exceedingly rare. We report a 41-year-old male presenting with acute asphyxia due to a complicated hepatic hydatid cyst with a giant transdiaphragmatic fistula into the right lung, leading to complete lung destruction and massive tracheobronchial aspiration. Emergency right pneumonectomy was performed for irreversible lung damage. Intraoperative findings confirmed heavy adhesions, lung destruction, and an extensive scolex-laden fistula. The postoperative course was challenging, complicated by ARDS and Acinetobacter sepsis, requiring prolonged ICU care, though follow-up was ultimately successful. This case highlights the aggressive progression of this rare complication and the crucial importance of early diagnosis and comprehensive surgical intervention in endemic areas to prevent devastating outcomes.