Typically, TTE is performed weekly for the first four to eight weeks following transplant with subsequent decremental frequency.
Absent acute rejection episodes, approximately three TTE examinations are typically performed yearly in chronic transplant recipients.
Reflected echoes are translated into electrical impulses for display on a monitor and for recording and storage on either videotape or digital recording.
M-mode echocardiography employs a single pencil-like beam ultrasound view of cardiac structures.
Left Ventricular Hypertrophy (LVH) correlates with prognosis in hypertensive cardiovascular disease.
In individuals with borderline hypertension, the decision to commit to long-term antihypertensive therapy may be determined by the presence of LVH.
The relative contributions of right ventricular ischemia and/or infarction can be evaluated.
Complications of acute infarction (mural thrombi, papillary muscle dysfunction and rupture, septal defects, true or false aneurysm and myocardial rupture) can be diagnosed and their contribution to the overall clinical status placed in perspective.
Myocardial thickness, refractile properties, contractile patterns and indices, restrictive hemodynamics and the late development of pericardial fluid may alert to a rejection episode.
None of these findings has achieved diagnostic sensitivity or specificity.
Convalescent evaluation at approximately six months and annually thereafter generally provides adequate supplemental data to a thoughtful clinical evaluation.