Chronic obstructive pulmonary disease (COPD) is a debilitating progressive lung disease characterised by irreversible airflow obstruction. In addition to an increase in morbidity and mortality, exacerbation also results in frequent hospital visits, which place a burden on healthcare systems. Non-invasive positive pressure ventilation (NPPV) with conventional inspiratory pressures is the standard ventilatory support for patients in exacerbation. At present, the use of higher inspiratory pressures through high intensity noninvasive positive pressure ventilation (Hi-NPPV) during an exacerbation remains unknown. We describe a novel application of Hi-NPPV in a patient with acute exacerbation who was refractory to conventional NPPV.

Antiphospholipid syndrome is a hypercoagulable autoimmune condition that predominantly affect the female and commonly manifest as arterio-venous thrombosis and recurrent miscarriage. Here, we present a unique case of a healthy young man who developed sudden onset of right leg swelling after exercise which was then found to be due to deep vein thrombosis via Doppler ultrasound. His blood investigations showed thrombocytopenia and prolonged coagulation profile. Therefore, antiphospholipid syndrome was suspected and later confirmed by positive autoimmune antibodies. He was treated with long term moderate intensity oral warfarin. The objective of this case report is to share the uncommon occurrence of an unprovoked deep vein thrombosis secondary to antiphospholipid syndrome in a healthy young man so that the possibility of deep vein thrombosis should be suspected in selected cases of non-resolving leg swelling after exercise as it can lead to fatal pulmonary embolism.