IMPACT OF INTRAVENOUS IRON TREATMENT OF PREOPERATIVE ANEMIA IN PATIENTS WITH LOWER EXTREMITY PERIPHERAL ARTERY DISEASE (IRONPAD)

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• - Patients with acute ischemia will be excluded. - Severe anemia < 8 g/dL. - Arterial hypertension not controlled with antihypertensive medication (considered with systolic pressure >180mmHg or diastolic >100mmHg ). - Acute renal failure or renal insufficiency with creatinine clearance <30mmHg. - Patient with documented intolerance or allergy to iron or its derivatives. - Unstable angina, defined as electrocardiographic changes with chest pain indicating myocardial ischemia at rest. - History of stroke in the previous 6 months. - Patients with thrombocytopenia of less than 50,000ug/dl or coagulation alterations. - Simultaneously participating in a clinical trial that conditions or modifies the registry. - Pregnancy or lactation (pregnancy tests in women of childbearing age according to standard practice). - Refusal of treatment or inclusion in the registry by the patient. - Patients refusing blood product transfusions (e.g. Jehovah's Witnesses). - Patients with SEPSIS criteria. - Patients with Ferritin <30 ng/mL who will be referred for digestive study. - Patients with active neoplasia. - Patients who are not able to give informed consent or understand the study procedure. - Probable or confirmed case with active SARS-CoV-2 infection. - Considering probable infection as: person with severe acute respiratory infection with clinical and radiological picture compatible with COVID-19 and negative PDIA results, or suspected cases with inconclusive PDIA. -Confirmed case with active SARS-CoV-2 infection: - Person meeting suspect case criteria and with positive PDIA. - Person who meets the criteria of a suspected case, with negative PDIA and positive IgM result by high-throughput serology. - Asymptomatic person with a positive PDIA with negative IgG or not performed. o Suspect case is defined as: any person with a clinical picture of acute respiratory infection of sudden onset with of sudden onset acute respiratory infection of any severity presenting with, among others, fever, cough or shortness of breath, with fever, cough or shortness of breath. - Other symptoms such as odynophagia, anosmia, ageusia, muscle pain, diarrhea, chest pain or headache, among others, may also be considered symptoms of suspected SARS-CoV-2 infection according to clinical criteria.