Role of Pulse Oximetry and Ankle Brachial Index in Diagnosis of Lower Limb Artery Disease (LEAD) in Patients with Coronary Artery Disease.
Journal
The Journal of the Association of Physicians of India
ISSN: 0004-5772
Titre abrégé: J Assoc Physicians India
Pays: India
ID NLM: 7505585
Informations de publication
Date de publication:
Apr 2020
Apr 2020
Historique:
entrez:
3
7
2020
pubmed:
3
7
2020
medline:
8
8
2020
Statut:
ppublish
Résumé
Lower extremity arterial disease is common disorder affecting large number of peoples and is frequently asymptomatic. Currently ABI is used as screening test for LEAD, which is time consuming and requires special instrument for measurement. We compare the role of pulse oximetry, ABI and its combination in diagnosis of LEAD. Total 224 patients (448 limbs) were enrolled in the study. Complete history, examination was done. Pulse oximetry of all limbs and ABI of both lower limbs were measured. CT angiography and pulse Doppler was done to diagnose LEAD. Pulse oximetry was found to have sensitivity of 60.5%, specificity of 95.9% positive likelihood ratio 14.93 and negative likelihood ratio 0.41. ABI was found to have sensitivity of 69.7%, specificity of 97.3%, positive likelihood ratio 25.8 and negative likelihood ratio 0.32. But when both are combined, sensitivity increases to 84.2%, specificity decreases to 91.9%, positive likelihood ratio decreases to 10.39 and negative likelihood ratio decreases to 0.17. Our study suggests that pulse oximetry is simple and non-invasive test that provides quick result which is at least as accurate as ABI and thus is an easy alternative/ additional method for the screening of LEAD. However when used in combination with ABI the sensitivity for the detection of LEAD increases.
Sections du résumé
BACKGROUND
BACKGROUND
Lower extremity arterial disease is common disorder affecting large number of peoples and is frequently asymptomatic. Currently ABI is used as screening test for LEAD, which is time consuming and requires special instrument for measurement. We compare the role of pulse oximetry, ABI and its combination in diagnosis of LEAD.
METHODS
METHODS
Total 224 patients (448 limbs) were enrolled in the study. Complete history, examination was done. Pulse oximetry of all limbs and ABI of both lower limbs were measured. CT angiography and pulse Doppler was done to diagnose LEAD.
RESULTS
RESULTS
Pulse oximetry was found to have sensitivity of 60.5%, specificity of 95.9% positive likelihood ratio 14.93 and negative likelihood ratio 0.41. ABI was found to have sensitivity of 69.7%, specificity of 97.3%, positive likelihood ratio 25.8 and negative likelihood ratio 0.32. But when both are combined, sensitivity increases to 84.2%, specificity decreases to 91.9%, positive likelihood ratio decreases to 10.39 and negative likelihood ratio decreases to 0.17.
CONCLUSION
CONCLUSIONS
Our study suggests that pulse oximetry is simple and non-invasive test that provides quick result which is at least as accurate as ABI and thus is an easy alternative/ additional method for the screening of LEAD. However when used in combination with ABI the sensitivity for the detection of LEAD increases.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
53-55Informations de copyright
© Journal of the Association of Physicians of India 2011.