1. Department of Health Sciences. Faculty of Nursing and Podiatry. University of A Coruña (UDC) Ferrol Campus, 15471, Ferrol, Spain.
2. Rheumatology and Public Health Research Group, Nursing Research and Health Care, Biomedical Research Institute of A Coruña (INIBIC), Complejo Hospitalario Universitario de A Coruña (CHUAC), SERGAS, University of Coruña (UDC), As Xubias 84, 15006 A Coruña, Spain.
3. Coordinator of the Endocrinology and Nutrition Unit Ferrol Naval Hospital (Ferrol Health Area). Department of Health Sciences. University of A Coruña (UDC). Ferrol Campus, 15471, Ferrol, Spain.
4. Research Support Unit. Rio Hortega University Hospital. Dulzaina 2. 47012, Valladolid, Spain.
5. Nurse at the Ferrol University Hospital Complex (Ferrol Health Area). Avda. de la Residencia s/n. 15405 Ferrol, Spain.
Objectives: To determine the of undiagnosed lower extremity artery disease using the pulse oximetry in a type 2 diabetic population sample.
Methods: Observational, cross-sectional, descriptive study that included 594 type 2 diabetic patients, with no previous history of lower extremity artery disease. Medical history, physical examination, determination of the ankle-brachial index (portable Doppler) and measurement of oxygen saturation in upper and lower extremities (pulse oximeter) were performed.
Results: Frequency of lower extremity artery disease determined by ankle-brachial index was 18.4%. No significant correlations were detected between oxygen saturation and the ankle-brachial index except for the relationship between ankle-brachial index vs. oxygen saturation at 30 cm lower limb elevation vs. the supine position at no elevation (0 cm) in subjects under the age of 40. Pulse oximetry showed little diagnostic value in the screening of lower extremity artery disease. A relationship between lower extremity artery disease and age has been found. Its diagnosis was associated with a lower body mass index and lower systolic blood pressure in the lower extremities and higher in the upper extremities.
Conclusions: We conclude that pulse oximetry is not useful in the screening for asymptomatic lower extremity artery disease in type 2 diabetics.
Keywords: diabetes, pulse oximetry, lower extremity artery disease