نتایج جستجو برای: valsalva
تعداد نتایج: 3570 فیلتر نتایج به سال:
AIM To evaluate female runners' pelvic floor muscles using three-dimensional ultrasonography (3DUS) and surface electromyography (SEMG). MATERIAL AND METHODS A cross-sectional study was conducted on 24 female runners. SEMG was performed using surface electrodes inserted in the vagina. 3DUS was performed using perineal convex transducer. SEMG was evaluated at rest and with maximum voluntary co...
PURPOSE To report four cases of premacular hemorrhage secondary to valsalva retinopathy treated with Nd:YAG membranotomy and discuss techniques as well as the literature. DESIGN Retrospective case series. METHODS A retrospective review was conducted for four patients with vision obstructing hemorrhage secondary to valsalva retinopathy. These patients were all treated with Nd:YAG membranotom...
A 47 year-old female of south Asian origin presented with acute pulmonary oedema. Her background included previous investigation for bilateral lung nodules (which remain of uncertain aetiology) and complete heart block leading to dual chamber permanent pacemaker implantation one year previously. A transthoracic echocardiogram identified an unruptured aneurysm of the right coronary sinus of Vals...
We report a 27 years old male who presented with a combination of both congenital and acquired cardiac defects. This syndrome complex includes congenital bicuspid aortic valve, Seller's grade II aortic regurgitation, juxta- subclavian coarctation, stenosis of ostium of left subclavian artery and ruptured sinus of Valsalva aneurysm without any evidence of infective endocarditis. This type of con...
BACKGROUND A noninvasive system for determining left ventricular (LV) filling pressure may help to improve personalized fluid removal goals in hemodialysis patients. We previously showed that the change in photoplethysmography (PPG) pulse amplitude measured by finger PPG during a Valsalva maneuver correlates with invasively measured left ventricular end-diastolic pressure (LVEDP). This key PPG ...
RATIONALE Ruptured sinus of Valsalva aneurysm is rare and dangerous in parturients. Few cases of ruptured SVA in pregnancy are reported, and the anesthetic management for cesarean delivery has scarcely been described. PATIENT CONCERNS A parturient at 37-week gestation complained of a sore throat and cough that started 3 days before admission, followed 1 day later by fever, dizziness, breathle...
A 52-year-old man with sudden onset of dyspnea was transferred to our hospital. Transthoracic echocardiography showed an intimal flap ranged from sinus of Valsalva to sinotubular junction, with heterogenous hypoechoic materials within the flap (Fig. 1), and it caused severe aortic regurgitation. Computed tomography scan showed linear dissection flap and aneurysmal dilatation in the sinus of Val...
Protective Effects of Acetazolamide and Hyperbaric Oxygenation on Experimentally Induced Syncope • The protective effects of acetazolamide and hyperbaric oxygenation on experimentally induced syncope were evaluated in seven healthy male subjects. Syncope was induced by vigorous hyperventilation and Valsalva maneuver. Each subject performed these procedures three times in each of the following c...
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Although the influence of the Valsalva maneuver on the heart and circulatory system has been investigated, the mechanism of intrathoracic pressure influencing cardiovascular function is unclear. To test our hypothesis that the interaction between the anatomy-determined partially-intrathoracic system and the fully-intrathoracic system might explain those issues and help to disclose the mechanism...
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