Reproducibilidad y validación de la aplicación movil qardioarm para la valoración de la presión arterial y la frecuencia cardíaca

Zusammenfassung

ABSTRACT The advantages of blood pressure self-measurement have been widely reported, but to be actually helpful, the self-measurement devices must be reliable and obtain accurate measurements. However, only a few of the devices available in the market have been validated and are recommended for their usage by patients. The primary objective is to evaluate the reliability and validity of the Qardioarm mobile application for self-monitoring of blood pressure and heart rate. For this purpose, a descriptive observational prospective and concordance study was carried out with two devices: the gold standard was the Omron M3 and the test apparatus, named as the application. In order to achieve this, 100 healthy adults from general population in Ciudad Real were selected and their blood-pressure and heart rate were measured and analysed in two sessions, according to the European Society of Hypertension international protocol and its most updated revision. The results were also analysed by using the Intraclass Correlation Coefficient, the Standard Measurement Error, the Pearson Correlation Coefficient and T-student statistical test, with the main variables: systolic and diastolic blood pressure, and heart rate. As a result, high correlation coefficients were obtained and the mean ± standard deviation differences between the gold standard and Qardioarm readings were: 0.87 ± 2.97 and 0.69 ± 2.83 for systolic pressure in the first and second sessions, respectively; -1.12 ± 1.88 and -1.67 ± 2.48 for diastolic pressure in the first and second time; and finally, -0.047 ± 1.64 and 0.07 ± 1.77 for heart rate in session I and II, respectively. Therefore, in overcoming the various reliability and validity tests, it is concluded that the tested device is reliable and valid, and it can be recommended for clinical use, providing people, with similar characteristics to those who were analysed, with all the expected benefits. PALABRAS CLAVE/ KEY WORDS: 320704; 320501.