COVID-19 susceptibility variants associate with blood clots, thrombophlebitis and circulatory diseases.

Epidemiological studies suggest that individuals with comorbid conditions including diabetes, chronic lung, inflammatory and vascular disease, are at higher risk of adverse COVID-19 outcomes. Genome-wide association studies have identified several loci associated with increased susceptibility and severity for COVID-19. However, it is not clear whether these associations are genetically determined or not. We used a Phenome-Wide Association (PheWAS) approach to investigate the role of genetically determined COVID-19 susceptibility on disease related outcomes. PheWAS analyses were performed in order to identify traits and diseases related to COVID-19 susceptibility and severity, evaluated through a predictive COVID-19 risk score. We utilised phenotypic data in up to 400,000 individuals from the UK Biobank, including Hospital Episode Statistics and General Practice data. We identified a spectrum of associations between both genetically determined COVID-19 susceptibility and severity with a number of traits. COVID-19 risk was associated with increased risk for phlebitis and thrombophlebitis (OR = 1.11, p = 5.36e-08). We also identified significant signals between COVID-19 susceptibility with blood clots in the leg (OR = 1.1, p = 1.66e-16) and with increased risk for blood clots in the lung (OR = 1.12, p = 1.45 e-10). Our study identifies significant association of genetically determined COVID-19 with increased blood clot events in leg and lungs. The reported associations between both COVID-19 susceptibility and severity and other diseases adds to the identification and stratification of individuals at increased risk, adverse outcomes and long-term effects.

Flegmasia cerúlea dolorosa y gangrena venosa asociada a infección por SARS-CoV-2: reporte de caso y revisión de la literatura / Flegmasia cerúlea dolens and venous gangrena associated with infection by SARS-CoV-2: case report and literature review

La flegmasia cerúlea dolorosa (FCD) y la gangrena venosa son las manifestaciones más graves de la trombosis venosa profunda aguda (TVP). Se presenta el caso de una mujer de 64 años que ingresó en el servicio de emergencias por dolor de la extremidad inferior izquierda y edema localizado en el pie, con diagnóstico de gangrena venosa tras los análisis correspondientes de clínica, laboratorio e imagen. Ante la evolución tórpida se realizaron fasciotomías, con mejoría evidente el cuadro. Al fi liar la causa de este evento, se adjudica a la infección por SARS-CoV-2 como desencadenante de esta gangrena venosa

Cerulean phlegmasy dolens (CDF) and venous gangrene are the most serious manifestations of acute deep vein thrombosis (DVT ). We present the case of a 64-year-old woman who was admitted to the emergency service for pain in the left lower limb and localized edema in the foot with a diagnosis of venous gangrene after the corresponding clinical, laboratory and imaging analysis. Given the torpid evolution, fasciotomies were performed with evident improvement in the picture. When fi ling the cause of this event, it is attributed to the infection by SARS-CoV-2 as the trigger for this venous gangrene

Severe Acute Respiratory Syndrome Coronavirus 2 Infection and Thrombosis: Phlegmasia Cerulea Dolens Presenting with Venous Gangrene in a Child.

A 12-year-old girl with severe acute respiratory syndrome coronavirus 2 infection presented as phlegmasia cerulea dolens with venous gangrene. Emergent mechanical thrombectomy was complicated by a massive pulmonary embolism and cardiac arrest, for which extracorporeal cardiopulmonary resuscitation and therapeutic hypothermia were used. Staged ultrasound-assisted catheter-directed thrombolysis was used for treatment of bilateral pulmonary emboli and the extensive lower extremity deep vein thrombosis while the patient received extracorporeal membrane oxygenation support. We highlight the need for heightened suspicion for occult severe acute respiratory syndrome coronavirus 2 infection among children presenting with unusual thrombotic complications.

[Primary cytomegalovirus infection and thrombophlebitis/pulmonary embolism]. / Primaer cytomegalovirusinfektion og tromboflebitis/lungeemboli.

A young woman was admitted to hospital with suspected pyelonephritis. Due to prolonged fever, further investigations were done and showed a thrombosis in her femoral vein; X-ray and lung scintigraphy revealed a pulmonary embolism. Blood tests showed lymphocytosis, and a primary cytamegalovirus (CMV) infection was confirmed by serology and PCR. The patient was a smoker and obese and was taking oral contraceptives; a factor V Leiden mutation was also found. Deep-vein thrombosis is a rare but severe complication of a primary CMV infection that is also seen in immunocompetent persons.

Varicella zoster meningitis preceeded by thrombophlebitis in a patient with Hodgkin's disease.

Varicella zoster (V-Z) infections are common among patients with hematological malignancies, particularly Hodgkin's disease (HD). The common denominator in both HD and V-Z infections is immunosuppression. Most of V-Z infections occur in patients with HD during the remission period, who have mixed cellularity sub-type, with stage III disease and who have received combined chemo-radiation therapy. Involvement of the central nervous system usually manifests as post-herpetic neuralgia or encephalitis. Angiitis has also been found in association with V-Z infections. The authors describe a case of HD who developed V-Z meningitis preceeded by superficial thrombophlebitis of upper extremities during the period of active chemotherapy.

Deep vein thrombosis as a manifestation of the acquired immunodeficiency syndrome? A case report.

A case report of a patient with idiopathic lower extremity deep vein thrombosis in association with human immunodeficiency virus infection is presented. The possibility of deep vein thrombosis being a manifestation of the acquired immunodeficiency syndrome is therefore highlighted. Palliative measures and low dose intravenous heparin were successfully employed in the treatment of the patient.

Increased rate of thrombin generation in hepatitis C virus cirrhotic patients. Relationship to venous thrombosis.

BACKGROUND: Venous thrombosis may complicate the clinical course of liver cirrhosis (LC), but the pathogenesis is still uncertain. We have previously demonstrated that antiphospholipid (aPL) antibodies were a risk factor for thrombosis. In the same study it was also evident that there was a higher prevalence of hepatitis C virus (HCV) infection in patients with thrombosis, and an association between anti-HCV positivity and aPL. METHODS: In a case-control study, 18 consecutive patients with LC, who had suffered from splanchnic venous thrombosis (n = 12), or thrombophlebitis (n = 6), were matched for age, sex, and degree of liver failure with 36 LC patients without thrombosis. RESULTS: In comparison to patients without thrombosis, patients with thrombosis had higher prevalence of HCV infection (p = 0.0027), positivity for aPL antibodies (p = 0.0003), and higher values of fragment F1+2, a marker of thrombin generation (p = 0.0083). While F1+2 values were similar in aPL (+) and aPL (-) patients, HCV patients had significantly higher values of F1+2 than patients with hepatitis B virus (HBV) infection and/or alcoholism (2.6 +/- 0.94 vs 1.5 +/- 0.66, p = 0.0001). CONCLUSIONS: These data suggest that in LC, HCV infection may contribute to clotting system activation, thus predisposing patients to venous thrombosis.