Objective To invastigate the presence of coronary artery remodeling in acute myocardial infarction(AMI)patients by intracoronary ultrasound(ICUS). Methods Before percutaneous coronary intervention(PCI),sixty five AMI patients were divided into two groups according to two types of arterial remodeling by ICUS.Emergency PCI group had 28 patients and delayed PCI group had 37 patients.Positive remodeling(PR) or negative remodeling(NR)was considered present when the vessel cross sectional area at the lesion site was larger than the proximal cross sectional area or smaller than the distal cross sectional area, respectively. Results Twenty nine patients( 44.6 %) showed PR and 36( 55.4 %)showed NR. Incidence of essential hypertension was higher in NR patients than that in PR ones among risk factors of coronary artery disease.Soft plaques( 83.1 %)(Va+Vb stage lesion in paticular) were main lesions in two type of remodelings and eccentric plaque more common in PR patients( 93.1 % vs 63.8 %,P

Objective To evaluate the feasibility and efficacy of intravascular optical coherence tomography (OCT) in the assessment of plaque characteristics and drug eluting stent deployment quality in the elderly patients with unstable angina (UA) and non-ST segment elevation myocardial infarction (NSTEMI). Methods OCT was used in elderly patients undergoing percutaneous coronary interventions.Fifteen patients, 9 males and 6 females with mean age of 72.6±5.3 years (range 67-92 years) were enrolled in the study. Images were obtained before initial balloon dilatation and following stent deployment. The plaque characteristics before dilation, vessel dissection,tissue prolapse, stent apposition and strut distribution after stent implantation were evaluated. Results Fifteen lesions were selected from 32 angiographic lesions as study lesions for OCT imaging after diagnostic coronary angiography. There were 7 lesions in the left anterior descending artery, 5 lesions in the right coronary artery and 3 lesions in the left circumflex coronary artery. Among them,12 (80.0%) were lipid-rich plaques, and 10 (66.7%) were vulnerable plaques with fibrous cap thickness 54.2±7.3 μm. Seven ruptured culprit plaques (46.7%) were found; 4 in UA patients and 3 in NSTEMI patients. Tissue prolapse was observed in 11 lesions (73.3%).Irregular stent strut distribution was detected in 8 lesions (53.3%). Vessel dissections were found in 5 lesions (33.3%). Incomplete stent apposition was observed in 3 stents (20%) with mean spacing between the struts and the vessel wall 172±96 mm (range 117-436 mm).Conclusions 1) It is safe and feasible to perform intravascular OCT to differentiate vulnerable coronary plaque and monitor stent deployment in elderly patients with UA and USTEMI. 2) Coronary plaques in elderly patients with UA and USTEMI could be divided into acute ruptured plaque, vulnerable plaque, lipid-rich plaque, and stable plaque. 3) Minor or critical plaque rupture is one of the mechanisms of UA in elderly patients. 4) Present drug eluting stent implantation is complicated with multiple tissue prolapses which are associated with irregular strut distributions. 5) The action and significance of tissue prolapse on acute vessel flow and in-stent thrombus and restenosis need to be further studied.

Objectives:To report the clinical experience of combined interventional procedures in the treatment of elderly patients with coexisting two or more cardiovascular diseases in our medical center, and to assess the feasibility, safety and therapeutic efficacy of this management strategy. Methods : Patients were selected to the study if: 1) age ＞65 years; 2) with coexistence of two or more cardiovascular diseases which are indications for interventional therapy; 3) patients' general condition and organ functions allow the performance of combined multiple procedures; 4) the predicted procedure time is within 150 min; 5) the predicted contrast medium dosage is within 300 ml. The criteria we analyzed included procedural type, rocedural time, fluoroscopy time, dosage of contrast medium, success rates of the procedures, complications and in-hospital mortality. All patients were followed up for 30.4 ± 9.3 months,to determine the all-cause mortality, recurrence rates and adverse cardiac events. Results : From January 2000 to December 2004,combined interventional procedures were performed on 136 patients, with 2 procedures on 134 patients and 3 procedures on 2 patients.The mean procedure time was 115.4±11.6 min, the mean fluoroscopy time was 35.7±9.3 min, and the mean dosage of contrast medium used was 183.6±19.4 ml. Procedural success rate was 100%, no procedure related death or major complications occurred.Conclusion: Performed by a competent team, combined interventional procedures in elderly patients with multiple cardiovascular diseases were feasible and relatively safe.

As a low-load physiological monitoring technology, wearable devices can provide new methods for monitoring, evaluating and managing chronic diseases, which is a direction for the future development of monitoring technology. However, as a new type of monitoring technology, its clinical application mode and value are still unclear and need to be further explored. In this study, a central monitoring system based on wearable devices was built in the general ward (non-ICU ward) of PLA General Hospital, the value points of clinical application of wearable physiological monitoring technology were analyzed, and the system was combined with the treatment process and applied to clinical monitoring. The system is able to effectively collect data such as electrocardiogram, respiration, blood oxygen, pulse rate, and body position/movement to achieve real-time monitoring, prediction and early warning, and condition assessment. And since its operation from March 2018, 1 268 people (657 patients) have undergone wearable continuous physiological monitoring until January 2020, with data from a total of 1 198 people (632 cases) screened for signals through signal quality algorithms and manual interpretation were available for analysis, accounting for 94.48 % (96.19%) of the total. Through continuous physiological data analysis and manual correction, sleep apnea event, nocturnal hypoxemia, tachycardia, and ventricular premature beats were detected in 232 (36.65%), 58 (9.16%), 30 (4.74%), and 42 (6.64%) of the total patients, while the number of these abnormal events recorded in the archives was 4 (0.63%), 0 (0.00%), 24 (3.80%), and 15 (2.37%) cases. The statistical analysis of sleep apnea event outcomes revealed that patients with chronic diseases were more likely to have sleep apnea events than healthy individuals, and the incidence was higher in men (62.93%) than in women (37.07%). The results indicate that wearable physiological monitoring technology can provide a new monitoring mode for inpatients, capturing more abnormal events and provide richer information for clinical diagnosis and treatment through continuous physiological parameter analysis, and can be effectively integrated into existing medical processes. We will continue to explore the applicability of this new monitoring mode in different clinical scenarios to further enrich the clinical application of wearable technology and provide richer tools and methods for the monitoring, evaluation and management of chronic diseases.
Heart Rate ; Humans ; Monitoring, Physiologic ; Movement ; Sleep Apnea Syndromes ; Wearable Electronic Devices

Wearable monitoring, which has the advantages of continuous monitoring for a long time with low physiological and psychological load, represents a future development direction of monitoring technology. Based on wearable physiological monitoring technology, combined with Internet of Things (IoT) and artificial intelligence technology, this paper has developed an intelligent monitoring system, including wearable hardware, ward Internet of Things platform, continuous physiological data analysis algorithm and software. We explored the clinical value of continuous physiological data using this system through a lot of clinical practices. And four value points were given, namely, real-time monitoring, disease assessment, prediction and early warning, and rehabilitation training. Depending on the real clinical environment, we explored the mode of applying wearable technology in general ward monitoring, cardiopulmonary rehabilitation, and integrated monitoring inside and outside the hospital. The research results show that this monitoring system can be effectively used for monitoring of patients in hospital, evaluation and training of patients' cardiopulmonary function, and management of patients outside hospital.
Humans ; Artificial Intelligence ; Internet of Things ; Wearable Electronic Devices ; Monitoring, Physiologic/methods* ; Electrocardiography ; Internet