To assess whether spontaneous coronary artery spasm in patients with variant angina results from local coronary hyperreactivity to a generalized constrictor stimulus or from a stimulus generated only at the site of the hyperreactive segment, the behavior of spastic and nonspastic coronary segments was studied in six patients with variant angina in whom focal coronary spasm developed spontaneous...

AIMS Contrast-guided axillary vein puncture is commonly used for pacemaker or defibrillator lead implantation. Venous spasm during contrast-guided axillary vein puncture has been reported rarely. We investigated the incidence of venous spasm during contrast-guided axillary vein puncture and the impact of venous spasm on axillary vein puncture. METHODS AND RESULTS Seventy-four consecutive pati...

OBJECTIVES The aim of this study was to investigate the conformational change of arterial structure in the vasospastic lesion with optical coherence tomography. BACKGROUND Coronary artery spasm plays an important role in the pathogenesis of ischemic heart diseases. The conformational change of each arterial layer during vasospasm has not been studied in detail. METHODS We assessed 19 corona...

In this paper, a new technique (SPASM) based on a 3DASM is presented for automatic segmentation of cardiac MRI image data sets consisting of multiple planes with different orientations, and with large undersampled regions. SPASM was applied to sparsely sampled and radially oriented cardiac LV image data. Performance of SPASM has been compared to results from other methods reported in literature...

introduction: gastrointestinal endoscopy is  as a diagnosis and treatment of gastrointestinal diseases in children. due to severe response and spastic in  the muscles of the digestive tract is created during endoscopy,endoscopy is often face with difficult. the aim of this study is to evaluate peppermint impact in pyloric spasm in children undergo endoscopy.   material and methods: in this clin...

Objectives: This study is designed to investigate the difference of gender, triggering factors and Heart rate variability(HRV) between left right hemifacial spasm patients.Methods: Among patients who visited Acupuncture Moxibustion medicine clinic Kyung Hee University Korean Medicine Hospital from January 1, 2017, April 18, 2022, we reviewed clinical records subjects with spasm(n=55) spasm(n=76...

Multivessel coronary spasm has been described but its incidence in patients with variant angina still remains unclear. Thirty-three patients with variant angina were studied during coronary angiographic examination with selective intracoronary injection of acetylcholine (ACh). In all but three patients, the location of ischemia during attack was determined by the electrocardiographic findings, ...

STUDY OBJECTIVES Previous studies have reported that magnesium (Mg) deficiency is associated with coronary spasm. However, little is known about the preventive effect of Mg on coronary spasm. The present study investigated whether Mg prevents coronary spasm in patients with vasospastic angina (VSA). DESIGN Effectiveness trial. SETTING University medical center. PATIENTS Twenty-two patient...

Coronary spasm plays an important role in the pathogenesis of variant angina as well as ischaemic heart diseases. Treatment with vasodilators such as long-acting calcium channel blockers and long-acting nitrates is generally effective in preventing coronary spasm; however, in some patients coronary spasm is refractory to standard therapy. Because of endothelial dysfunction, hyper-reactivity of ...