CLINICAL APPLICATION OF INFERIOR VENA CAVA ECHOCARDIOGRAPHY
- VernacularTitle:下腔静脉声象图与M型显示的临床应用
- Author:
Peichun QIU
- Publication Type:Journal Article
- Keywords:
echocardiography;
inferior vena cava;
collapse, respiratory
- From:Journal of Xi'an Jiaotong University(Medical Sciences)
1982;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
The article reports the echocardiographic manifestations of the inferior vena cava (IVC). The normal IVC M-mode echocardiogram appeared which has "a" and "V" waves similar to the jugular venous tracting and exhibits Prominent periodic respiratory changes. In right heart failure, tricuspid regurgitation and constrictive pericarditis, the IVC was usually distended with diminished or absented respiratory coUapse. The specific patterns of the M-mode IVC tracting could be observed during various dysrhythmias. For instance, the "a" wave disaPeared in atrial fibrillation and atrial flutter or showed "common "a" waves from patients with complete heart block, while in chronic cor-pulmonale the "a" wave was increased but the period was short. There were not any changes in an overloaded right ventricular volume and various pericarditis with effusion. The results indicate that the "a" wave reflects the right atrium contraction.The IVC is frequently involved by abdominal and retroperitoneal diseases. Thus, it is greatly helpful to evaluate the course of IVC in determining the origin of an adjacent mass.
