Validation of the YuWell YE660D oscillometric upper-arm blood pressure monitor for clinic and home in general population according to the Association for the Advancement of Medical Instrumentation/European Society of Hypertension/International Organization for Standardization Universal Standard (International Organization for Standardization 81060-2:2018) and the International Organization for Standardization Amendment 1. 2020

OBJECTIVE

To evaluate the accuracy of the YuWell YE660D oscillometric upper-arm blood pressure (BP) monitor in general population (for clinic and home BP measurements in adults) according to the Association for the Advancement of Medical Instrumentation/European Society of Hypertension/International Organization for Standardization (AAMI/ESH/ISO) Universal Standard (ISO 81060-2 : 2018) and its Amendment 1. 2020.

METHODS

Subjects were recruited to fulfill the age, sex, BP and cuff distribution criteria of the AAMI/ESH/ISO Universal Standard in general population using the same arm sequential BP measurement method. Two cuffs of the test device were used for arm circumferences 22-32 cm (standard) and 22-45 cm (wide range).

RESULTS

Ninety-two subjects were recruited and 85 subjects were analyzed. For validation criterion 1, the mean ± SD of the differences between the test device and reference BP readings was 0.3 ± 7.2/2.2 ± 5.5 mmHg (systolic/diastolic). For validation criterion 2, the SD of the averaged BP differences between the test device and reference BP per subject was 6.1/4.8 mmHg (systolic/diastolic).

CONCLUSION

The YuWell YE660D oscillometric upper-arm electronic BP monitor has passed the requirements of the AAMI/ESH/ISO Universal Standard (ISO 81060-2 : 2018) and its Amendment 1. 2020 in adults and hence can be recommended for home and clinical use.

Validation of the YuWell YE900 oscillometric blood pressure monitor for professional office use in adults and children according to the AAMI/ESH/ISO Universal Standard (ISO 81060-2:2018)

OBJECTIVE

To evaluate the accuracy of the YuWell YE900 oscillometric upper-arm professional office blood pressure monitor in adults and children according to the Association for the Advancement of Medical Instrumentation/European Society of Hypertension/International Organization for Standardization (AAMI/ESH/ISO) Universal Standard (ISO 81060-2:2018).

METHODS

Subjects were recruited to fulfill the age, sex, blood pressure and cuff distribution criteria of the AAMI/ESH/ISO Universal Standard in adults and children (aged 3-12 years) using the same arm sequential blood pressure measurement method. Three cuffs of the test device were used for arm circumference 18-22 cm (small), 22-32 cm (medium) and 32-42 cm (large).

RESULTS

Ninety-two subjects were recruited, and 85 (50 adults and 35 children) were analyzed. For validation criterion 1, the mean ± SD of the differences between the test device and reference blood pressure readings was 1.7 ± 6.62/3.1 ± 5.76 mmHg (systolic/diastolic). For validation criterion 2, the SD of the averaged blood pressure differences between the test device and reference blood pressure per subject was 5.25/5.13 mmHg (systolic/diastolic).

CONCLUSION

The YuWell YE900 professional electronic blood pressure monitor has passed the requirements of the AAMI/ESH/ISO Universal Standard (ISO 81060-2:2018) in adults and children and can be recommended for clinical use.

Prevalence of arrhythmias in patients with idiopathic dilated cardiomyopathy

A total of 105 patients with idiopathic dilated cardiomyopathy (IDCM) underwent Holter monitoring. The prevalence of arrhythmias was as follows: ventricular premature beats (VPB) 100%, including complex VPB 58.1%, short runs of ventricular tachycardia (VT) 25.7%, A-VB or BBB 46.7%, atrial arrhythmias 38.1%, sinus node dysfunction 6.6%, ST-T change 38.1%. The incidence of ventricular arrhythmia (VA) was not related to severity of cardiac dysfunction (NYHA), duration of illness and sex. The most common arrhythmia was VA, the second one was heart block and atrial arrhythmia. Serum norepinephrine and epinephrine levels were 743.4 +/- 252.5 and 688.0 +/- 452.4 pg/ml, respectively, which were higher than those in control group (P < 0.01). Isoproterenol sensitivity test (ICD25) 8.43 +/- 11.21 micrograms, was also much higher than that in control group (P < 0.01). Average H-V interval was 69.4 +/- 13.3 msec in HBE. Eight patients died. Two died of congestive heart failure (class II-IV), and six cases were diagnosed as sudden cardiac death resulting from VT and VF.