Table 1.

Indications for urgent/emergency or elective vascular surgery during pandemic COVID-19 infection in the Lombardy region, Italy, from 9 March to 28 April 2020

Urgent/emergency diseases	Patients suffering from serious diseases that involve immediate risk to life or the function of vital organs or limbs, for whom urgent/emergency surgery is indicated
Elective diseases	Patients suffering from serious diseases that do not imply an immediate risk to life or to the function of vital organs or limbs, but who require surgical interventions that cannot be postponed for a period of more than two months
	Thoracic aortic aneurysms with a diameter >6 cm, or rapidly growing, or symptomatic, or in the presence of connective tissue disease on a genetic basis
	Abdominal aortic aneurysms with a diameter >5.5 cm, or rapidly growing, or symptomatic, or in the presence of genetically based connective tissue disease
	Iliac aneurysms with a diameter >4 cm, or rapidly growing, or symptomatic, or in the presence of connective tissue disease on a genetic basis
	Symptomatic peripheral/visceral aneurysms or with a diameter >4 cm
	Acute or subacute dissections of the descending thoracic aorta (type B according to Stanford)
	Symptomatic carotid or supra-aortic stenosis, of any degree
	Asymptomatic carotid or supra-aortic trunk stenosis >80% (NASCET) or with PSV > 3 m/s
	Arteriopathy of the limbs with critical ischaemia
	Femoro-iliocaval deep vein thrombosis at risk of pulmonary embolism

PSV = peak systolic velocity; NASCET = The North American Symptomatic Carotid Endarterectomy Trial.