Use of Pulse Oximeter as a Tool to Detect Peripheral Arterial Disease: A Cross-sectional Study in a Tertiary Care Center
Use of pulse oximeter as a tool to detect peripheral arterial disease. A cross-sectional study in a tertiary care center. Aims and Objectives: To evaluate the utility of pulse oximeter (index test) as a diagnostic test to detect peripheral arterial disease (PAD) by comparing it with the standard dia...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2025-03-01
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| Series: | Medical Journal of Dr. D.Y. Patil Vidyapeeth |
| Subjects: | |
| Online Access: | https://journals.lww.com/10.4103/mjdrdypu.mjdrdypu_227_24 |
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| Summary: | Use of pulse oximeter as a tool to detect peripheral arterial disease. A cross-sectional study in a tertiary care center.
Aims and Objectives:
To evaluate the utility of pulse oximeter (index test) as a diagnostic test to detect peripheral arterial disease (PAD) by comparing it with the standard diagnostic test, that is, arterial Doppler ultrasonography.
Secondary Objective:
To evaluate the efficacy of ankle brachial pressure index (ABPI) in detecting PAD.
Materials and Methods:
Patients of age 40 years or older with symptoms of PAD or asymptomatic patients with risk factors for peripheral vascular disease had pulse oximeter readings of upper and lower limbs. A decrease in pulse oximeter reading of 2% in the lower limb compared to the upper limb reading was considered positive. The patients then underwent ABPI measurement with a handheld Doppler device, arterial Doppler ultrasonography of the lower limb was conducted, and the results of each test were compared.
Results:
The values obtained by pulse oximeter measurement had a sensitivity of 64.4% (95% CI 56.7%-71.4%), specificity of 75% (95% CI 47.6%-92.7%), PPV and NPV of 96.6% (95% CI 92.2%-98.5%) and 16.2% (95% CI 12.04%-21.48%) respectively, with a P value of 0.002 and accuracy of 65.2%, whereas values obtained by ABPI had a sensitivity of 72.4% (95% CI 65.5%-79.1%), specificity of 50% (95% CI 24.6%-75.3%), PPV and NPV of 94% (95% CI 90.6%-96.3%) and 14.3% (95% CI 8.8%-22.3%) respectively, with a P value 0.06, and an accuracy of 70%.
Conclusion:
Pulse oximeter can be used as a tool for the detection of PAD with considerable accuracy. |
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| ISSN: | 2589-8302 2589-8310 |