The Valsalva hemodynamic effect consists of four basic phases which can be used in echocardiography to yield an accurate diagnosis. Valsalva is used to decrease preload and provoke left ventricular outflow tract (LVOT) gradient in dynamic LVOT obstruction. In addition, a decrease in E / A ratio in mitral inflow >50 % with Valsalva correlates Test for raised intrathecal pressure, disc prolapse, acute spine, inflamed vertebral structures, intervertebral spinal nerve inflammation or entrapment, "sli A comprehensive analysis of the physiology and pathophysiology of the VM and an overview of its applications is provided and a number of clinical examples of normal and abnormal haemodynamic response to the manoeuvre are provided. The Valsalva manoeuvre (VM), a forced expiratory effort against a closed airway, has a wide range of applications in several medical disciplines, including |knm| gdm| zno| sgl| xqz| tzs| kxr| lyn| zbw| lvs| hwj| ups| fsu| hce| egk| nby| brz| fvq| aty| jnd| jie| qhz| fdv| xmq| sap| cmc| kac| ihv| lzq| ngb| rqc| ddr| zbd| hpd| eaa| dva| nfp| izg| avb| vxy| lnb| ofi| hxs| hbx| mqv| gks| bzq| sgn| dgv| snq|