| Title |
Photoplethysmography using a smartphone application for assessment of ulnar artery patency: a randomized clinical trial
|
|---|---|
| Published in |
Canadian Medical Association Journal, April 2018
|
| DOI | 10.1503/cmaj.170432 |
| Pubmed ID | |
| Authors |
Pietro Di Santo, David T Harnett, Trevor Simard, F Daniel Ramirez, Ali Pourdjabbar, Altayyeb Yousef, Robert Moreland, Jordan Bernick, George Wells, Alexander Dick, Michel Le May, Marino Labinaz, Derek So, Pouya Motazedian, Richard G Jung, Jaya Chandrasekhar, Roxana Mehran, Aun-Yeong Chong, Benjamin Hibbert |
| Abstract |
Radial artery access is commonly performed for coronary angiography and invasive hemodynamic monitoring. Despite limitations in diagnostic accuracy, the modified Allen test (manual occlusion of radial and ulnar arteries followed by release of the latter and assessment of palmar blush) is used routinely to evaluate the collateral circulation to the hand and, therefore, to determine patient eligibility for radial artery access. We sought to evaluate whether a smartphone application may provide a superior alternative to the modified Allen test. We compared the modified Allen test with a smartphone heart rate-monitoring application (photoplethysmography readings detected using a smartphone camera lens placed on the patient's index finger) in patients undergoing a planned cardiac catheterization. Test order was randomly assigned in a 1:1 fashion. All patients then underwent conventional plethysmography of the index finger, followed by Doppler ultrasonography of the radial and ulnar arteries (the diagnostic standard). The primary outcome was diagnostic accuracy of the heart rate-monitoring application. Among 438 patients who were included in the study, we found that the heart rate-monitoring application had a superior diagnostic accuracy compared with the modified Allen test (91.8% v. 81.7%,p= 0.002), attributable to its greater specificity (93.0% v. 82.8%,p= 0.001). We also found that this application had greater diagnostic accuracy for assessment of radial or ulnar artery patency in the ipsilateral and contralateral wrist (94.0% v. 84.0%,p< 0.001). A smartphone application used at the bedside was diagnostically superior to traditional physical examination for confirming ulnar patency before radial artery access. This study highlights the potential for smartphone-based diagnostics to aid in clinical decision-making at the patient's bedside.Trial registration:Clinicaltrials.gov, no. NCT02519491. |
X Demographics
The data shown below were collected from the profiles of 92 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 24 | 26% |
| United States | 20 | 22% |
| Germany | 3 | 3% |
| United Kingdom | 3 | 3% |
| Spain | 3 | 3% |
| Sweden | 1 | 1% |
| France | 1 | 1% |
| Venezuela, Bolivarian Republic of | 1 | 1% |
| Chile | 1 | 1% |
| Other | 7 | 8% |
| Unknown | 28 | 30% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 57 | 62% |
| Practitioners (doctors, other healthcare professionals) | 16 | 17% |
| Scientists | 13 | 14% |
| Science communicators (journalists, bloggers, editors) | 5 | 5% |
| Unknown | 1 | 1% |
Mendeley readers
The data shown below were compiled from readership statistics for 74 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 74 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 12 | 16% |
| Researcher | 11 | 15% |
| Student > Bachelor | 9 | 12% |
| Other | 7 | 9% |
| Student > Ph. D. Student | 5 | 7% |
| Other | 10 | 14% |
| Unknown | 20 | 27% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 15 | 20% |
| Nursing and Health Professions | 10 | 14% |
| Psychology | 7 | 9% |
| Engineering | 4 | 5% |
| Business, Management and Accounting | 2 | 3% |
| Other | 11 | 15% |
| Unknown | 25 | 34% |
Attention Score in Context
This research output has an Altmetric Attention Score of 365. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 April 2023.
All research outputs
#88,580
of 25,757,133 outputs
Outputs from Canadian Medical Association Journal
#158
of 9,546 outputs
Outputs of similar age
#2,169
of 343,824 outputs
Outputs of similar age from Canadian Medical Association Journal
#3
of 129 outputs
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