Left Ventricular Diastolic Dysfunction
Conditions
Brief summary
Diastolic dysfunction is an important cause of hemodynamic instability in the perioperative field.Therefore this study aims to investigate the influence of existing diastolic dysfunction or deterioration of diastolic function on hemodynamic stability during induction of anesthesia and postoperative complications. The impact of different anesthetics on diastolic function is investigated.
Detailed description
In this prospective observational study two cohorts of patients with different anesthesia regimes are investigated. Anesthesia is maintained with sevoflurane or propofol. Before induction of anesthesia a transthoracic echocardiography is performed to examine systolic and diastolic function. Immediately after induction, during maintenance and after completion of anesthesia any changes of diastolic function are examined with transthoracic echocardiography. All anesthetic medications, fluids, vasoactive medications and catecholamines are registered.
Interventions
Anesthesia maintenance with Sevoflurane
Anesthesia maintenance with Propofol
Sponsors
Study design
Eligibility
Inclusion criteria
* Patients older than 60 years scheduled for general anesthesia
Exclusion criteria
* Mitral regurgitation or stenosis \> I° * Sp. mitral valve repair or replacement * Pericardial effusion * Atrial fibrillation/flutter * Patients with pacemaker * BMI \> 35 kg/m2
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Norepinephrine | 30 minutes after induction of anesthesia | Cumulative dose of norepinephrine (adjusted for body weight) during the first 30 minutes after induction of anesthesia |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| e' | Directly after induction of anesthesia | Change of the echocardiographic tissue doppler parameter e' after induction of anesthesia |
| E / e' | Directly after induction of anesthesia | Change of the echocardiographic index of transmitral flow and tissue doppler after induction of anesthesia |
Countries
Germany