Color M-Mode Doppler Flow Propagation Velocity Is a Relatively Preload-Independent Index of Left Ventricular Filling

1999 ◽  
Vol 12 (2) ◽  
pp. 129-137 ◽  
Author(s):  
Mario J. Garcia ◽  
Robert T. Palac ◽  
David J. Malenka ◽  
Patricia Terrell ◽  
Jonathan F. Plehn
Keyword(s):  
Propagation Velocity ◽  
Left Ventricular ◽  
Left Ventricular Filling ◽  
Doppler Flow ◽  
Flow Propagation Velocity ◽  
Flow Propagation ◽  
Ventricular Filling

scholarly journals Mitral flow propagation velocity in non-sedated healthy cats

2014 ◽  
Vol 66 (1) ◽  
pp. 15-21
Author(s):  
A.C. Silva ◽  
R.A.L. Muzzi ◽  
G. Oberlender ◽  
L.A.L. Muzzi ◽  
M.R. Coelho ◽  
...  
Keyword(s):  
Diastolic Function ◽  
Propagation Velocity ◽  
Small Animal ◽  
Left Ventricular Diastolic Function ◽  
Left Ventricular ◽  
Reference Ranges ◽  
Mitral Flow ◽  
Flow Propagation Velocity ◽  
Flow Propagation ◽  
Ventricular Filling

Mitral flow propagation velocity (Vp) is an index used to evaluate the left ventricular diastolic function. Its influence on human and small animal cardiopathies has been studied; however there are few reports evaluating this variable in domestic felines. In addition, there is a lack of studies in non-sedated healthy cats. Therefore, the purpose of this study was to establish values for Vp and its correlation with other echocardiographic indexes in non-sedated healthy cats in order to provide new perspectives related to diastolic function in this species. Twenty-six clinically healthy cats were submitted to echocardiography to assess the animals' cardiac conditions. Variables such as age, heart rate (HR), body surface area (BSA), initial (E mitral) and late (A mitral) ventricular filling waves, isovolumic relaxation time (IVRT) and E/IVRT relation were correlated to Vp. No proven relation between any of these variables and Vp was observed in this present study, except for HR and BSA. In the variability analysis, higher values were verified for inter-observer analysis. This study concludes that Vp proved to be an useful index for estimating left ventricular relaxation in non-sedated healthy domestic cats and provides reference ranges for this variable.

Abstract 2288: Does Perioperative Diastolic Dysfunction Affect Postoperative Outcome ?

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Robina Matyal ◽  
Feroze Mahmood ◽  
Balachundar Subramaniam ◽  
Peter Panzica ◽  
Swaminathan Karthik ◽  
...  
Keyword(s):  
Postoperative Complications ◽  
Vascular Surgery ◽  
Diastolic Dysfunction ◽  
Propagation Velocity ◽  
Left Ventricular ◽  
Transmitral Flow ◽  
Prolonged Intubation ◽  
Flow Propagation Velocity ◽  
Flow Propagation ◽  
Ventricular Filling

Objective: To assess the presence of perioperative diastolic dysfunction (DD) in patients undergoing vascular surgery with transesophageal echo (TEE) and its association with postoperative morbidity and mortality. Methods: We conducted TEE examinations on 282 patients undergoing high-risk vascular surgery under general anesthesia (GA). All TEE examinations were conducted after induction of GA and endotracheal intubation. We used transmitral flow propagation velocity (Vp); a validated echocardiographic index of left ventricular filling and DD, for assessment of perioperative DD. A Vp value of < 0.45m/sec is considered diagnostic of DD. We used Fisher’s Exact Test and Pearson’s Chi-Square to compare the incidence of postoperative complications i.e. congestive heart failure (CHF), myocardial infarction (MI), arrhythmias, prolonged intubation and death in patients with and without DD. Statistical significance was set at a p-value of ≤ 0.05. Results: There were 176 males and 102 females. The mean age in males was 68.6 and 72 years in females. We were able to assess Vp in all these patients. A total of 184 (66%) patients had Vp < 0.45 m/sec. Of these patients with DD, 60 patients (32.6%) had at least one adverse outcome. Ejection fraction (EF) was comparable between the patients with and without adverse outcomes. A Vp value of <0.45m/sec was associated with a statistically significant increase in the incidence of postoperative CHF and arrhythmias and a trend towards higher incidence of postoperative prolonged intubation but not that of MI or death (Table 1 ). Conclusion: Vp is an easily obtained index of left ventricular filling. Almost 2/3 rd (66%) of the patients presenting for vascular surgery were diagnosed to have DD by an abnormal Vp. Presence of perioperative DD is associated with a higher incidence of postoperative complications (CHF, Arrhythmias, Prolonged Intubation). Table 1 Vp: Transmitral Flow Propagation Velocity

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