@entity67 is that property of the normal heart such that distension of one ventricle alters the distensibility and filling pressure of the other. This phenomenon coupled with reciprocal changes in right and left heart venous return during normal quiet respiration results in minor decreases in left @entity64 , systolic blood pressure, pulse pressure, total electromechanical systole (Q-A2), left ventricular ejection time and mitral e-wave velocity during inspiration and minor increases in these parameters during expiration. Opposite changes in these parameters occur in the right heart with increases occurring during inspiration and decreases during expiration. Exaggerated ventricular interdependence occurs in @entity2293 when the pericardial constraint limits the total contents in the pericardial sac. This, together with the decreased effective left ventricular filling pressure which occurs during inspiration, is responsible for the exaggerated decrease in @entity64 volume, blood pressure, pulse pressure, left ventricular ejection time and mitral e-wave velocity in this condition. These observations, together with the echocardiographic findings of right @entity955 , right ventricular collapse, and @entity6323 plethora constitute the noninvasive diagnosis of @entity2293 . The utility of these noninvasive tests in detecting both the presence and degree of increased pericardial pressure was evaluated in 33 invasively studied @entity1 with @entity2294 . In Group 1 (n = 13) intrapericardial pressure was elevated but less than both right atrial pressure and pulmonary wedge pressure, in Group 2 (n = 10) intrapericardial pressure equaled right atrial pressure but was less than pulmonary wedge pressure, and in Group 3 (n = 10) intrapericardial pressure equaled right atrial pressure and pulmonary wedge pressure. From these data it is concluded that right atrial and right ventricular collapse are highly sensitive techniques for predicting @entity101 in all three groups, but fail to predict the level of intrapericardial pressure and the severity of hemodynamic compromise. However, the absence of @entity6323 plethora helped separate Group 1 @entity1 from Groups 2 and 3 @entity1 , thereby aiding in distinguishing a group of @entity1 with severe hemodynamic derangement requiring urgent intervention. Exaggerated reciprocal changes in mitral and tricuspid e-wave velocity is a very sensitive finding for @entity101 . However, its presence correlates poorly with the severity of tamponade. Acute @entity2293 is a clinical diagnosis determined by the integration of the history, physical exam and appropriate noninvasive physiologic and imaging techniques.

Noninvasive/invasive correlates of exaggerated ventricular interdependence in XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity64 :: ('MESH:D020521', 'Disease') :: ['stroke', 'ventricular stroke volume'] @entity101 :: ('MESH:D006973', 'Disease') :: ['increased intrapericardial pressure'] @entity2293 :: ('MESH:D002305', 'Disease') :: ['pericardial tamponade', 'cardiac tamponade'] @entity2294 :: ('MESH:D010490', 'Disease') :: ['pericardial effusion'] @entity955 :: ('MESH:D001281', 'Disease') :: ['atrial collapse'] @entity6323 :: ('MESH:C563013', 'Disease') :: ['inferior vena cava'] @entity67 :: ('MESH:D018754', 'Disease') :: ['Ventricular interdependence']
@entity2293 :: (MESH:D002305,Disease) :: ['cardiac tamponade']
