The Effectiveness of Mobile Cloud 12-Lead Electrocardiogram Transmission System in Patients with ST-Segment Elevation Myocardial Infarction.

Backgroundand Objectives: Delay of reperfusion therapy is related to high mortality in cases of ST-segment elevation myocardial infarction (STEMI). Guidelines emphasize that the first-medical-contact-to-balloon (FMCTB) time should be within 90 min. A mobile cloud-based 12-lead electrocardiogram (MC-ECG) transmission system might be useful in such cases, especially in rural areas. Materials and Methods: From April 2019 to June 2021, both an MC-ECG transmission system and the conventional method in which a physician checks the ECG in a hospital (Conventional) were used for transport by emergency medical services in Shin-Yukuhashi Hospital, Fukuoka, Japan. During this period, 8684 consecutive patients were transported to this hospital. Among them, we investigated 48 STEMI patients. The MC-ECG group (n = 23) and the Conventional group (n = 25) were enrolled. Results: There was no significant difference in FMCTB time between the MC-ECG and Conventional groups (MC-ECG: 72.0 (60.5-107) min vs. Conventional: 80.0 (63.0-92.0) min, p = 0.77). The length of hospital stay in the MC-ECG group was significantly shorter than that in the Conventional group (12.0 (10.0-15.0) days vs. 16.0 (12.0-19.0) days, p = 0.039). The logistic regression model showed that patients' non-use of MC-ECG was associated with a risk of more than 15-day length of hospital stay with an adjusted odd ratio of 0.08 (95% CI: 0.013-0.55, p = 0.0098). Conclusions: Using the MC-ECG, the length of hospital stay in patients with STEMI was significantly reduced.

Postural Conversion Computed Tomography for the Diagnosis of Pneumopericardium due to Perforation by the Active Atrial Lead.

A 71-year-old woman with cardiac sarcoidosis underwent an implantable cardioverter-defibrillator implantation in the left precordium to prevent fatal arrhythmias. Two weeks later, she presented with dyspnea. Chest X-ray revealed right pneumothorax due to the active atrial lead perforation. Subsequently, air was detected surrounding the heart. Although it was difficult to differentiate pneumopericardium from pneumomediastinum, postural conversion computed tomography (CT) in the supine and prone positions documented air migration in the pericardial cavity and diagnosed pneumopericardium. This rare case of pneumopericardium combined with pneumothorax contralateral to the venous access site highlights the utility of postural conversion CT for diagnosis of pneumopericardium.

A rare case of eosinophilic granulomatosis with polyangiitis complicated with progressive pericardial effusion.

A 44-year-old woman had a 15-year history of asthma and had recently been treated for sinusitis and unidentified limb eruption. She had presented at a nearby clinic with inspiratory chest pain one week before hospitalization, and was diagnosed as having eosinophilic pneumonia based on peripheral blood eosinophilia and ground glass opacities in the right lung field, without pericardial effusion, as detected by chest computed tomography. She additionally presented with a feeling of chest tightness, and extensive pericardial effusion appeared within a week. She developed heart failure on admission, and we performed pericardiocentesis. We gave a clinical diagnosis of acute probable myopericarditis as the cause of pericardial effusion based on pleuritic chest pain, pericardial effusion, and elevation of cardiac enzymes, as well as eosinophilic granulomatosis with polyangiitis (EGPA) based on eosinophilia, her history of sinusitis, asthma, and migratory pulmonary opacities. We initiated oral prednisone 25 mg daily and pericardial effusion disappeared. In patients with EGPA, cardiac involvement is more serious than the involvement of other organs, and is associated with a poor prognosis. In this report we describe a rare case of EGPA complicated with progressive pericardial effusion and discuss the importance of the early diagnosis and treatment of EGPA. .