Validation of a wearable cuff-less wristwatch-type blood pressure monitoring device.

Ambulatory blood pressure (BP) monitoring is recommended to improve the management of hypertension. Here, we investigated the accuracy of BP estimated using a wearable cuff-less device, InBodyWATCH, compared with BP measured using a manual sphygmomanometer. Thirty-five adults were enrolled (age 57.1 ± 17.9 years). The BP was estimated using InBodyWATCH with an individualized estimation based on a neural network model. Three paired sets of BPs from the two devices were compared using correlation analysis and Bland-Altman plots (n = 105 paired BP readings). The correlations for both systolic and diastolic BP (SBP and DBP) between the two devices were high (r = 0.964 and 0.939, both P < 0.001). The mean difference was 2.2 ± 6.1 mmHg for SBP and -0.2 ± 4.2 mmHg for DBP; these were not significant (P = 0.472 for SBP and P = 0.880 for DBP). The proportions of estimated SBP/DBP obtained from the InBodyWATCH within ± 5 mmHg of manual SBP/DBP were 71.4%/83.8%; within ± 10 mmHg they were 86.7%/98.1%; and within ± 15 mmHg they were 97.1%/99.0%. The estimated BP from this wearable cuff-less device correlated highly with the manual BP and showed good accuracy, suggesting its potential to be used in ambulatory BP monitoring.

The Impacts of Prognostic Awareness on Mood and Quality of Life Among Patients With Advanced Cancer.

BACKGROUND: Accurate awareness of the prognosis is an important factor in the treatment decision of patients with advanced cancer; however, prognostic disclosure is still subject to debate because it can reduce patient's satisfaction and increase depression. AIM: The purpose of this study is to assess whether patients' prognostic awareness is associated with decreased quality of life (QoL) or increased depressive mood in patients with advanced cancer. DESIGN AND PARTICIPANTS: In this cohort study, 386 patients with advanced cancer were recruited across 3 periods from December 2016 to August 2018. The outcome of this study was a change in QoL and depression according to the patients' prognostic awareness at baseline, 3 months, and 6 months. RESULTS: This study found significant differences in changes of QoL based on patients' prognostic awareness. From baseline to 3 months, emotional functioning (P = .039), pain (P = .042), existential well-being (P = .025), and social support (P = .038) subscale scores improved significantly more in those with lack of prognostic awareness. Over 6 months, the group without prognostic awareness improved significantly in terms of physical functioning (P = .037), emotional functioning (P = .002), nausea/vomiting (P = .048), and constipation (P = .039) subscale scores and existential well-being scores (P = .025). No significant difference between the groups was found in terms of depression. CONCLUSION: Accurate prognostic awareness may pose harm and may provide no additional benefits in terms of QoL and mood among patients with advanced cancer for a short period of time.

Randomized Controlled Trial of Advance Care Planning Video Decision Aid for the General Population.

CONTEXT: Advance care planning (ACP) in a healthy general population could improve the quality of care when a health problem arises. OBJECTIVES: The purpose of this study was to evaluate the efficacy of video decision support aid in increasing the intention to document ACP in the general healthy population. METHODS: In this randomized controlled trial, we enrolled 250 members of the general population (aged 20 years and older and determined to be healthy), stratified by age and sex. The intervention was a video that provided information about ACP and end-of-life care options such as cardiopulmonary resuscitation (CPR) and palliative care. An attention-control arm was given a booklet about advance directives. Primary outcome was a change in intention to document ACP. Secondary outcomes included the intention to refuse CPR at terminal status, CPR and palliative care knowledge score, and the Hospital Anxiety and Depression Scale. RESULTS: About 250 participants were randomly assigned, half to the video-assisted intervention group and half to the attention-control group. Within one week postintervention, the intention to document ACP was significantly higher in the video-assisted intervention arm (68.0% vs. 39.2%; P < 0.001), and changes in the intention to document ACP were significantly greater in the video group than in the brochure group (P = 0.008; Δ = 14.4%). Palliative care knowledge score was also significantly increased in the video group (P = 0.036). CONCLUSION: A well-constructed video decision support intervention can increase the intention to document ACP in the general population that presumably had little opportunity to discuss ACP with physicians.

A clinical pilot study of jawbone mineral density measured by the newly developed dual-energy cone-beam computed tomography method compared to calibrated multislice computed tomography.

PURPOSE: This clinical pilot study was performed to determine the effectiveness of dual-energy cone-beam computed tomography (DE-CBCT) in measuring bone mineral density (BMD). MATERIALS AND METHODS: The BMD values obtained using DE-CBCT were compared to those obtained using calibrated multislice computed tomography (MSCT). After BMD calibration with specially designed phantoms, both DE-CBCT and MSCT scanning were performed in 15 adult dental patients. Three-dimensional (3D) Digital Imaging and Communications in Medicine data were imported into a dental software program, and the defined regions of interest (ROIs) on the 3-dimensional surface-rendered images were identified. The automatically-measured BMD values of the ROIs (g/cm3), the differences in the measured BMD values of the matched ROIs obtained by DE-CBCT and MSCT 3D images, and the correlation between the BMD values obtained by the 2 devices were statistically analyzed. RESULTS: The mean BMD values of the ROIs for the 15 patients as assessed using DE-CBCT and MSCT were 1.09±0.07 g/cm3 and 1.13±0.08 g/cm3, respectively. The mean of the differences between the BMD values of the matched ROIs as assessed using DE-CBCT and calibrated MSCT images was 0.04±0.02 g/cm3. The Pearson correlation coefficient between the BMD values of DE-CBCT and MSCT images was 0.982 (r=0.982, P<0.001). CONCLUSION: The newly developed DE-CBCT technique could be used to measure jaw BMD in dentistry and may soon replace MSCT, which is expensive and requires special facilities.