Early effect of surgical revascularisation on left ventricular twist function
| Autor: | Michael Y. Henein, Anders Holmgren, Ihab S Ramzy, Per Lindqvist, Sandra Gustafsson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
medicine.medical_specialty
LV function lcsh:Diseases of the circulatory (Cardiovascular) system Ejection fraction lcsh:R Diastole lcsh:Medicine twist and longitudinal strain Stroke volume Surgery Basal (phylogenetics) medicine.anatomical_structure lcsh:RC666-701 Internal medicine medicine Cardiology In patient Twist coronary artery disease Early effect Artery Mathematics coronary artery bypass surgery |
| Zdroj: | International Cardiovascular Forum Journal, Vol 4, Pp 19-23 (2015) |
| ISSN: | 2409-3424 2410-2636 |
| Popis: | The direct effect of coronary artery bypass graft (CABG) surgery on early recovery of myocardial function, particularly twist and rotation is not well studied. Aim: To assess the early response of the 3 myocardial components, circumferential, longitudinal and oblique to CABG in patients with isolated coronary disease. Methods: We studied 14 patients, age 64±10 years, before CABG and before hospital discharge using various Doppler echocardiographic techniques including speckle tracking, and compared them with 28 age matched controls. Results: Before surgery: Compared to controls, patients had significantly reduced LVEF (p=0.01) but maintained stroke volume (SV) (p=0.5). Diastolic LV function indices were statistically abnormal (p=0.01). LV lateral wall long axis amplitude and myocardial systolic velocities were both reduced (p=0.01) as was septal amplitude of motion (p=0.05). LV peak global longitudinal strain (GLS) was reduced as were systolic and early diastolic global longitudinal strain rates (p=0.01 for all). LV peak basal and apical rotations, twist and torsion were not different. Q-peak basal rotation was shorter than controls (p=0.01). After surgery: None of these measurements changed except peak GLS which further reduced (p=0.01). Pre-operatively, SV correlated with global LV function: twist (r= -0.65, p=0.01), and LV torsion (r=-0.66, p=0.01) but LVEF did not correlate with either. Post-operatively, SV correlated with E/A ratio (r=0.66, p=0.01), and the time interval Q- peak basal rotation rate (r=0.8, p=0.002). Conclusion: CABG does not result in significant early segmental LV functional improvement along its three myocardial components, but SV becomes dependent on early basal rotation and filling pressures. |
| Databáze: | OpenAIRE |
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