Pulmonary embolism in patients with COVID-19: incidence, risk factors, clinical characteristics, and outcome.

AIMS: We investigated the incidence, risk factors, clinical characteristics, and outcomes of pulmonary embolism (PE) in patients with COVID-19 attending emergency departments (EDs), before hospitalization. METHODS AND RESULTS: We retrospectively reviewed all COVID-19 patients diagnosed with PE in 62 Spanish EDs (20% of Spanish EDs, case group) during the first COVID-19 outbreak. COVID-19 patients without PE and non-COVID-19 patients with PE were included as control groups. Adjusted comparisons for baseline characteristics, acute episode characteristics, and outcomes were made between cases and randomly selected controls (1:1 ratio). We identified 368 PE in 74 814 patients with COVID-19 attending EDs (4.92‰). The standardized incidence of PE in the COVID-19 population resulted in 310 per 100 000 person-years, significantly higher than that observed in the non-COVID-19 population [35 per 100 000 person-years; odds ratio (OR) 8.95 for PE in the COVID-19 population, 95% confidence interval (CI) 8.51-9.41]. Several characteristics in COVID-19 patients were independently associated with PE, the strongest being D-dimer >1000 ng/mL, and chest pain (direct association) and chronic heart failure (inverse association). COVID-19 patients with PE differed from non-COVID-19 patients with PE in 16 characteristics, most directly related to COVID-19 infection; remarkably, D-dimer >1000 ng/mL, leg swelling/pain, and PE risk factors were significantly less present. PE in COVID-19 patients affected smaller pulmonary arteries than in non-COVID-19 patients, although right ventricular dysfunction was similar in both groups. In-hospital mortality in cases (16.0%) was similar to COVID-19 patients without PE (16.6%; OR 0.96, 95% CI 0.65-1.42; and 11.4% in a subgroup of COVID-19 patients with PE ruled out by scanner, OR 1.48, 95% CI 0.97-2.27), but higher than in non-COVID-19 patients with PE (6.5%; OR 2.74, 95% CI 1.66-4.51). Adjustment for differences in baseline and acute episode characteristics and sensitivity analysis reported very similar associations. CONCLUSIONS: PE in COVID-19 patients at ED presentation is unusual (about 0.5%), but incidence is approximately ninefold higher than in the general (non-COVID-19) population. Moreover, risk factors and leg symptoms are less frequent, D-dimer increase is lower and emboli involve smaller pulmonary arteries. While PE probably does not increase the mortality of COVID-19 patients, mortality is higher in COVID-19 than in non-COVID-19 patients with PE.

Incidence, risk factors, clinical characteristics and outcomes of deep venous thrombosis in patients with COVID-19 attending the Emergency Department: results of the UMC-19-S8.

BACKGROUND AND IMPORTANCE: A higher incidence of venous thromboembolism [both pulmonary embolism and deep vein thrombosis (DVT)] in patients with coronavirus disease 2019 (COVID-19) has been described. But little is known about the true frequency of DVT in patients who attend emergency department (ED) and are diagnosed with COVID-19. OBJECTIVE: We investigated the incidence, risk factors, clinical characteristics and outcomes of DVT in patients with COVID-19 attending the ED before hospitalization. METHODS: We retrospectively reviewed all COVID patients diagnosed with DVT in 62 Spanish EDs (20% of Spanish EDs, case group) during the first 2 months of the COVID-19 outbreak. We compared DVT-COVID-19 patients with COVID-19 without DVT patients (control group). Relative frequencies of DVT were estimated in COVID and non-COVID patients visiting the ED and annual standardized incidences were estimated for both populations. Sixty-three patient characteristics and four outcomes were compared between cases and controls. RESULTS: We identified 112 DVT in 74 814 patients with COVID-19 attending the ED [1.50‰; 95% confidence interval (CI), 1.23-1.80‰]. This relative frequency was similar than that observed in non-COVID patients [2109/1 388 879; 1.52‰; 95% CI, 1.45-1.69‰; odds ratio (OR) = 0.98 [0.82-1.19]. Standardized incidence of DVT was higher in COVID patients (98,38 versus 42,93/100,000/year; OR, 2.20; 95% CI, 2.03-2.38). In COVID patients, the clinical characteristics associated with a higher risk of presenting DVT were older age and having a history of venous thromboembolism, recent surgery/immobilization and hypertension; chest pain and desaturation at ED arrival and some analytical disturbances were also more frequently seen, d-dimer >5000 ng/mL being the strongest. After adjustment for age and sex, hospitalization, ICU admission and prolonged hospitalization were more frequent in cases than controls, whereas mortality was similar (OR, 1.37; 95% CI, 0.77-2.45). CONCLUSIONS: DVT was an unusual form of COVID presentation in COVID patients but was associated with a worse prognosis.

Frequency, Risk Factors, Clinical Characteristics, and Outcomes of Spontaneous Pneumothorax in Patients With Coronavirus Disease 2019: A Case-Control, Emergency Medicine-Based Multicenter Study.

BACKGROUND: Recent reports of patients with coronavirus disease 2019 (COVID-19) developing pneumothorax correspond mainly to case reports describing mechanically ventilated patients. The real incidence, clinical characteristics, and outcome of spontaneous pneumothorax (SP) as a form of COVID-19 presentation remain to be defined. RESEARCH QUESTION: Do the incidence, risk factors, clinical characteristics, and outcomes of SP in patients with COVID-19 attending EDs differ compared with COVID-19 patients without SP and non-COVID-19 patients with SP? STUDY DESIGN AND METHODS: This case-control study retrospectively reviewed all patients with COVID-19 diagnosed with SP (case group) in 61 Spanish EDs (20% of Spanish EDs) and compared them with two control groups: COVID-19 patients without SP and non-COVID-19 patients with SP. The relative frequencies of SP were estimated in COVID-19 and non-COVID-19 patients in the ED, and annual standardized incidences were estimated for both populations. Comparisons between case subjects and control subjects included 52 clinical, analytical, and radiologic characteristics and four outcomes. RESULTS: We identified 40 occurrences of SP in 71,904 patients with COVID-19 attending EDs (0.56‰; 95% CI, 0.40‰-0.76‰). This relative frequency was higher than that among non-COVID-19 patients (387 of 1,358,134, 0.28‰; 95% CI, 0.26‰-0.32‰; OR, 1.93; 95% CI, 1.41-2.71). The standardized incidence of SP was also higher in patients with COVID-19 (34.2 vs 8.2/100,000/year; OR, 4.19; 95% CI, 3.64-4.81). Compared with COVID-19 patients without SP, COVID-19 patients developing SP more frequently had dyspnea and chest pain, low pulse oximetry readings, tachypnea, and increased leukocyte count. Compared with non-COVID-19 patients with SP, case subjects differed in 19 clinical variables, the most prominent being a higher frequency of dysgeusia/anosmia, headache, diarrhea, fever, and lymphopenia (all with OR > 10). All the outcomes measured, including in-hospital death, were worse in case subjects than in both control groups. INTERPRETATION: SP as a form of COVID-19 presentation at the ED is unusual (< 1‰ cases) but is more frequent than in the non-COVID-19 population and could be associated with worse outcomes than SP in non-COVID-19 patients and COVID-19 patients without SP.

Clinical findings, risk factors, and final outcome in patients diagnosed with pulmonary thromboembolism and COVID-19 in hospital emergency departments. / Características clínicas, factores de riesgo y resultados finales de pacientes con COVID-19 diagnosticados de tromboembolia de pulmón en urgencias.

OBJECTIVES: To analyze clinical, laboratory, and radiologic findings and final health outcomes in patients with pulmonary embolism and coronavirus disease 2019 (COVID-19). To compare them to findings and outcomes in patients with pulmonary embolism without COVID-19. MATERIAL AND METHODS: Multicenter, observational, retrospective study in 4 Spanish hospital emergency departments (EDs) from January 15 to April 15, 2020. Cases were located by reviewing all ED requests for pulmonary computed tomography angiography (CTA) procedures. Clinical, laboratory, and radiologic findings; medical histories and comorbidity; risk factors; and outcomes were compared between the 2 groups of patients (with or without COVID-19). RESULTS: A total of 399 CTAs were ordered; 88 pulmonary embolisms were diagnosed, 28 of them (32%) in patients with COVID-19. This group had more men, and a history of thromboembolic disease was more common. We found no between-group differences in clinical presentation, laboratory, or radiologic findings; nor were there differences in final outcomes. In-hospital mortality was 7% (2 cases) in patients with COVID-19 and 17% (10 cases) in patients without the virus (odds ratio for death in patients with pulmonary embolism and COVID-19, 0.38; 95% CI, 0.08-1.89). CONCLUSION: We found no clinically important differences in the clinical, laboratory, or radiologic findings between patients with or without COVID-19 who were treated for pulmonary embolism in our hospital EDs. Final outcomes also did not differ.

OBJETIVO: Analizar las características clínicas, analíticas, radiológicas y los resultados finales de salud en una cohorte de pacientes con embolia pulmonar (EP) y COVID-19, y compararlas con un grupo de pacientes con EP sin COVID-19. METODO: Estudio multicéntrico, observacional y retrospectivo realizado en cuatro servicios de urgencias hospitalarios (SUH) españoles del 15 de enero al 15 de abril de 2020. La detección de EP se hizo mediante la revisión de todas las angiografías por tomografía computarizada (angioTC) pulmonares solicitadas desde los SUH. Se han analizado dos grupos de pacientes con EP, con o sin enfermedad por COVID-19, y se comparan las características clínicas, analíticas, radiológicas, antecedentes y comorbilidad, factores de riesgo y resultados finales. RESULTADOS: Se realizaron 399 angioTC y se diagnosticaron 88 EP, 28 (32%) en pacientes con COVID-19. Estos pacientes fueron con más frecuencia hombres y tenían más antecedentes de enfermedad tromboembólica previa. No hubo diferencias en la presentación clínica, características analíticas o radiológicas ni en los resultados finales entre ambos grupos. La mortalidad intrahospitalaria fue del 7% (2 casos) en pacientes COVID y del 17% (10 casos) en pacientes sin COVID (OR de muerte en pacientes COVID con EP: 0,38, IC 95%: 0,08-1,89). CONCLUSIONES: No se han observado diferencias clínicamente relevantes en las características clínicas, analíticas, radiológicas y los resultados finales de salud en una cohorte de pacientes con EP y COVID-19 respecto a los pacientes con EP sin esta enfermedad atendidos en los SUH.

Características clínicas, factores de riesgo y resultados finales de pacientes con COVID-19 diagnosticados de tromboembolia de pulmón en urgencias

OBJETIVO: Analizar las características clínicas, analíticas, radiológicas y los resultados finales de salud en una cohorte de pacientes con embolia pulmonar (EP) y COVID-19, y compararlas con un grupo de pacientes con EP sin COVID-19. MÉTODO: Estudio multicéntrico, observacional y retrospectivo realizado en cuatro servicios de urgencias hospitalarios (SUH) españoles del 15 de enero al 15 de abril de 2020. La detección de EP se hizo mediante la revisión de todas las angiografías por tomografía computarizada (angioTC) pulmonares solicitadas desde los SUH. Se han analizado dos grupos de pacientes con EP, con o sin enfermedad por COVID-19, y se comparan las características clínicas, analíticas, radiológicas, antecedentes y comorbilidad, factores de riesgo y resultados finales. RESULTADOS: Se realizaron 399 angioTC y se diagnosticaron 88 EP, 28 (32%) en pacientes con COVID-19. Estos pacientes fueron con más frecuencia hombres y tenían más antecedentes de enfermedad tromboembólica previa. No hubo diferencias en la presentación clínica, características analíticas o radiológicas ni en los resultados finales entre ambos grupos. La mortalidad intrahospitalaria fue del 7% (2 casos) en pacientes COVID y del 17% (10 casos) en pacientes sin COVID (OR de muerte en pacientes COVID con EP: 0,38, IC 95%: 0,08-1,89). CONCLUSIONES: No se han observado diferencias clínicamente relevantes en las características clínicas, analíticas, radiológicas y los resultados finales de salud en una cohorte de pacientes con EP y COVID-19 respecto a los pacientes con EP sin esta enfermedad atendidos en los SUH OBJECTIVE: To analyze clinical, laboratory, and radiologic findings and final health outcomes in patients with pulmonary embolism and coronavirus disease 2019 (COVID-19). To compare them to findings and outcomes in patients with pulmonary embolism without COVID-19. METHODS: Multicenter, observational, retrospective study in 4 Spanish hospital emergency departments (EDs) from January 15 to April 15, 2020. Cases were located by reviewing all ED requests for pulmonary computed tomography angiography (CTA) procedures. Clinical, laboratory, and radiologic findings;medical histories and comorbidity;risk factors;and outcomes were compared between the 2 groups of patients (with or without COVID-19). RESULTS: A total of 399 CTAs were ordered;88 pulmonary embolisms were diagnosed, 28 of them (32%) in patients with COVID-19. This group had more men, and a history of thromboembolic disease was more common. We found no between-group differences in clinical presentation, laboratory, or radiologic findings;nor were there differences in final outcomes. In-hospital mortality was 7% (2 cases) in patients with COVID-19 and 17% (10 cases) in patients without the virus (odds ratio for death in patients with pulmonary embolism and COVID-19, 0.38;95% CI, 0.08-1.89). CONCLUSIONS: We found no clinically important differences in the clinical, laboratory, or radiologic findings between patients with or without COVID-19 who were treated for pulmonary embolism in our hospital EDs. Final outcomes also did not differ

Clinical findings, risk factors, and final outcome in patients diagnosed with pulmonary thromboembolism and COVID-19 in hospital emergency departments / Caracteristicas clinicas, factores de riesgo y resultados finales de pacientes con COVID-19 diagno

OBJECTIVES: To analyze clinical, laboratory, and radiologic findings and final health outcomes in patients with pulmonary embolism and coronavirus disease 2019 (COVID-19). To compare them to findings and outcomes in patients with pulmonary embolism without COVID-19. MATERIAL AND METHODS: Multicenter, observational, retrospective study in 4 Spanish hospital emergency departments (EDs) from January 15 to April 15, 2020. Cases were located by reviewing all ED requests for pulmonary computed tomography angiography (CTA) procedures. Clinical, laboratory, and radiologic findings;medical histories and comorbidity;risk factors;and outcomes were compared between the 2 groups of patients (with or without COVID-19). RESULTS: A total of 399 CTAs were ordered;88 pulmonary embolisms were diagnosed, 28 of them (32%) in patients with COVID-19. This group had more men, and a history of thromboembolic disease was more common. We found no between-group differences in clinical presentation, laboratory, or radiologic findings;nor were there differences in final outcomes. In-hospital mortality was 7% (2 cases) in patients with COVID-19 and 17% (10 cases) in patients without the virus (odds ratio for death in patients with pulmonary embolism and COVID-19, 0.38;95% CI, 0.08-1.89). CONCLUSION: We found no clinically important differences in the clinical, laboratory, or radiologic findings between patients with or without COVID-19 who were treated for pulmonary embolism in our hospital EDs. Final outcomes also did not differ. OBJETIVO: Analizar las caracteristicas clinicas, analiticas, radiologicas y los resultados finales de salud en una cohorte de pacientes con embolia pulmonar (EP) y COVID-19, y compararlas con un grupo de pacientes con EP sin COVID-19. METODO: Estudio multicentrico, observacional y retrospectivo realizado en cuatro servicios de urgencias hospitalarios (SUH) espanoles del 15 de enero al 15 de abril de 2020. La deteccion de EP se hizo mediante la revision de todas las angiografias por tomografia computarizada (angioTC) pulmonares solicitadas desde los SUH. Se han analizado dos grupos de pacientes con EP, con o sin enfermedad por COVID-19, y se comparan las caracteristicas clinicas, analiticas, radiologicas, antecedentes y comorbilidad, factores de riesgo y resultados finales. RESULTADOS: Se realizaron 399 angioTC y se diagnosticaron 88 EP, 28 (32%) en pacientes con COVID-19. Estos pacientes fueron con mas frecuencia hombres y tenian mas antecedentes de enfermedad tromboembolica previa. No hubo diferencias en la presentacion clinica, caracteristicas analiticas o radiologicas ni en los resultados finales entre ambos grupos. La mortalidad intrahospitalaria fue del 7% (2 casos) en pacientes COVID y del 17% (10 casos) en pacientes sin COVID (OR de muerte en pacientes COVID con EP: 0,38, IC 95%: 0,08-1,89). CONCLUSIONES: No se han observado diferencias clinicamente relevantes en las caracteristicas clinicas, analiticas, radiologicas y los resultados finales de salud en una cohorte de pacientes con EP y COVID-19 respecto a los pacientes con EP sin esta enfermedad atendidos en los SUH.