ABSTRACT
Wunderlich syndrome is characterized by the presence of abdominal pain, hematuria, and hypovolemic shock. We report a rare case of a 25-year-old pregnant woman, who came to the emergency department due to the sudden onset of low back pain and diaphoresis. The patient, during medical evaluation, experienced an altered state of consciousness. Diagnosed with hypovolemic shock, she was admitted to the operating room, where examination of the abdominal cavity revealed a left retroperitoneal hematoma. Damage control surgery was performed, but given the postoperative clinical deterioration, computerized tomography angiography of the abdomen was performed, showing a mass-like lesion arising from the upper pole of the left kidney, consistent with Wunderlich syndrome. Left nephrectomy was the definitive treatment for the 10-cm renal angiomyolipoma. Since Wunderlich syndrome is a potentially lethal entity, CT is usually the preferred diagnostic approach, and supra-selective vascular embolization is the first-line treatment.
ABSTRACT
OBJECTIVE: To identify risk factors for nonresponse to prone positioning in mechanically ventilated patients with COVID-19-associated severe acute respiratory distress syndrome and refractory hypoxemia in a tertiary care hospital in Colombia. METHODS: Observational study based on a retrospective cohort of mechanically ventilated patients with severe acute respiratory distress syndrome due to SARS-CoV-2 who underwent prone positioning due to refractory hypoxemia. The study considered an improvement ≥ 20% in the PaO2/FiO2 ratio after the first cycle of 16 hours in the prone position to be a 'response'. Nonresponding patients were considered cases, and responding patients were controls. We controlled for clinical, laboratory, and radiological variables. RESULTS: A total of 724 patients were included (58.67 ± 12.37 years, 67.7% males). Of those, 21.9% were nonresponders. Mortality was 54.1% for nonresponders and 31.3% for responders (p < 0.001). Variables associated with nonresponse were time from the start of mechanical ventilation to pronation (OR 1.23; 95%CI 1.10 - 1.41); preintubation PaO2/FiO2 ratio (OR 0.62; 95%CI 0.40 - 0.96); preprone PaO2/FiO2 ratio (OR 1.88. 95%CI 1.22 - 2.94); and radiologic multilobe consolidation (OR 2.12; 95%CI 1.33 - 3.33) or mixed pattern (OR 1.72; 95%CI 1.07 - 2.85) compared with a ground-glass pattern. CONCLUSION: This study identified factors associated with nonresponse to prone positioning in patients with refractory hypoxemia and acute respiratory distress syndrome due to SARS-CoV-2 receiving mechanical ventilation. Recognizing such factors helps identify candidates for other rescue strategies, including more extensive prone positioning or extracorporeal membrane oxygenation. Further studies are needed to assess the consistency of these findings in populations with acute respiratory distress syndrome of other etiologies.
Subject(s)
COVID-19 , Respiratory Distress Syndrome , Female , Humans , Male , COVID-19/complications , Hypoxia/etiology , Positive-Pressure Respiration , Prone Position/physiology , Pulmonary Gas Exchange/physiology , Respiratory Distress Syndrome/etiology , Retrospective Studies , SARS-CoV-2 , Middle Aged , AgedABSTRACT
In a high proportion of patients, infection by COVID-19 progresses to acute respiratory distress syndrome (ARDS), requiring invasive mechanical ventilation (IMV) and admission to an intensive care unit (ICU). Other devices, such as a high-flow nasal cannula (HFNC), have been alternatives to IMV in settings with limited resources. This study evaluates whether HFNC exposure time prior to IMV is associated with mortality. This observational, analytical study was conducted on a historical cohort of adults with ARDS due to SARS-CoV-2 who were exposed to HFNC and subsequently underwent IMV. Univariate and multivariate logistic regression was used to analyze the impact of HFNC exposure time on mortality, controlling for multiple potential confounders. Of 325 patients with ARDS, 41 received treatment with HFNC for more than 48 h before IMV initiation. These patients had a higher mortality rate (43.9% vs. 27.1%, p: 0.027) than those using HFNC < 48 h. Univariate analysis evidenced an association between mortality and HFNC ≥ 48 h (OR 2.16. 95% CI 1.087-4.287. p: 0.028). Such an association persisted in the multivariable analysis (OR 2.21. 95% CI 1.013-4.808. p: 0.046) after controlling for age, sex, comorbidities, basal severity of infection, and complications. This study also identified a significant increase in mortality after 36 h in HFNC (46.3%, p: 0.003). In patients with ARDS due to COVID-19, HFNC exposure ≥ 48 h prior to IMV is a factor associated with mortality after controlling multiple confounders. Physiological mechanisms for such an association are need to be defined.
Subject(s)
COVID-19 , Noninvasive Ventilation , Respiratory Distress Syndrome , Respiratory Insufficiency , Adult , Humans , SARS-CoV-2 , Cannula/adverse effects , COVID-19/complications , COVID-19/therapy , Respiration, Artificial , Respiratory Distress Syndrome/etiology , Respiratory Distress Syndrome/therapy , Noninvasive Ventilation/adverse effects , Risk Factors , Oxygen Inhalation Therapy , Respiratory Insufficiency/therapyABSTRACT
ABSTRACT Objective: To identify risk factors for nonresponse to prone positioning in mechanically ventilated patients with COVID-19-associated severe acute respiratory distress syndrome and refractory hypoxemia in a tertiary care hospital in Colombia. Methods: Observational study based on a retrospective cohort of mechanically ventilated patients with severe acute respiratory distress syndrome due to SARS-CoV-2 who underwent prone positioning due to refractory hypoxemia. The study considered an improvement ≥ 20% in the PaO2/FiO2 ratio after the first cycle of 16 hours in the prone position to be a 'response'. Nonresponding patients were considered cases, and responding patients were controls. We controlled for clinical, laboratory, and radiological variables. Results: A total of 724 patients were included (58.67 ± 12.37 years, 67.7% males). Of those, 21.9% were nonresponders. Mortality was 54.1% for nonresponders and 31.3% for responders (p < 0.001). Variables associated with nonresponse were time from the start of mechanical ventilation to pronation (OR 1.23; 95%CI 1.10 - 1.41); preintubation PaO2/FiO2 ratio (OR 0.62; 95%CI 0.40 - 0.96); preprone PaO2/FiO2 ratio (OR 1.88. 95%CI 1.22 - 2.94); and radiologic multilobe consolidation (OR 2.12; 95%CI 1.33 - 3.33) or mixed pattern (OR 1.72; 95%CI 1.07 - 2.85) compared with a ground-glass pattern. Conclusion: This study identified factors associated with nonresponse to prone positioning in patients with refractory hypoxemia and acute respiratory distress syndrome due to SARS-CoV-2 receiving mechanical ventilation. Recognizing such factors helps identify candidates for other rescue strategies, including more extensive prone positioning or extracorporeal membrane oxygenation. Further studies are needed to assess the consistency of these findings in populations with acute respiratory distress syndrome of other etiologies.
RESUMO Objetivo: Identificar fatores de risco em pacientes submetidos à ventilação mecânica devido à síndrome do desconforto respiratório agudo grave associada à COVID-19 e hipoxemia refratária irresponsivos ao decúbito ventral em um hospital terciário na Colômbia. Métodos: Estudo observacional baseado em coorte retrospectiva de pacientes submetidos à ventilação mecânica devido à síndrome do desconforto respiratório agudo grave associada ao SARS-CoV-2 em decúbito ventral devido à hipoxemia refratária. O estudo considerou resposta a melhora ≥ 20% na relação entre pressão parcial de oxigênio e fração inspirada de oxigênio após o primeiro ciclo de 16 horas em decúbito ventral. Os pacientes irresponsivos foram considerados casos, e os responsivos foram considerados controles. Controlamos as variáveis clínicas, laboratoriais e radiológicas. Resultados: Foram incluídos 724 pacientes (58,67 ± 12,37 anos, 67,7% do sexo masculino). Destes, 21,9% eram pacientes irresponsivos. A mortalidade foi de 54,1% nos irresponsivos e de 31,3% nos responsivos (p < 0,001). As variáveis associadas à ausência de resposta foram tempo do início da ventilação mecânica até o decúbito ventral (RC de 1,23; IC95% 1,10 - 1,41); relação entre pressão parcial de oxigênio e fração inspirada de oxigênio pré-intubação (RC de 0,62; IC95% 0,40 - 0,96); relação entre pressão parcial de oxigênio e fração inspirada de oxigênio anterior ao decúbito ventral (RC de 1,88; IC95% 1,22 - 2,94); e consolidação radiológica de múltiplos lobos (RC de 2,12; IC95% 1,33 - 3,33) ou padrão misto (RC de 1,72; IC95% 1,07 - 2,85) em comparação com um padrão em vidro fosco. Conclusão: Este estudo identificou fatores associados à ausência de resposta ao decúbito ventral em pacientes com hipoxemia refratária e síndrome do desconforto respiratório agudo devido ao SARS-CoV-2 em ventilação mecânica. O reconhecimento desses fatores ajuda a identificar os candidatos a outras estratégias de resgate, incluindo decúbito ventral mais prolongado ou oxigenação por membrana extracorpórea. São necessários novos estudos para avaliar a consistência desses achados em populações com síndrome do desconforto respiratório agudo por causa de outras etiologias.
