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Intraoperative assessment of diastolic function: utility of echocardiography
George N Djaiani1, Stanton K Shernan
1Department of Anesthesiology and Pain Medicine, Division of Cardiovascular Anesthesia and Intensive Care, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada. george.djaiani@uhn.on.ca
Insights
Echocardiography is crucial for assessing diastolic function during surgery. Newer methods improve accuracy by being less affected by heart rate and loading conditions, aiding in identifying high-risk patients.
Area of Science:
- Cardiology
- Anesthesiology
- Medical Imaging
Background:
- Diastolic dysfunction is common before and after cardiac surgery, but its impact on outcomes remains debated.
- Optimal cardiac performance relies on normal diastolic function.
- Echocardiography is a safe, noninvasive tool for perioperative diastolic function assessment.
Purpose of the Study:
- To review current and future applications of echocardiographic modalities for intraoperative diastolic function evaluation.
- To highlight the role of echocardiography in managing patients undergoing cardiac surgery.
Main Methods:
- Review of current literature on echocardiographic techniques for diastolic function assessment.
- Discussion of conventional and novel echocardiographic modalities.
- Analysis of their applicability in the perioperative setting.
Main Results:
- Conventional echocardiographic measures of diastolic function can be limited by intraoperative physiological changes (heart rate, rhythm, loading conditions).
- Emerging echocardiographic techniques show reduced sensitivity to acute loading condition variations.
- These newer modalities may supplement traditional methods for perioperative diastolic function assessment.
Conclusions:
- Effective diagnostic technology for perioperative diastolic function is essential.
- This technology can help identify high-risk cardiac surgical patients.
- Early identification allows for better patient triaging and therapeutic interventions.
Purpose Of Review:
This review discusses the current and future applications of different echocardiographic modalities in evaluating diastolic function intraoperatively.
Recent Findings:
Normal diastolic function is required for optimal cardiac performance. There is sufficient evidence to support the significant prevalence of preoperative diastolic dysfunction and its incidence following cardiac surgery, however controversy still exists regarding the impact of diastolic dysfunction on adverse outcomes. Echocardiography provides a relatively safe, practical and noninvasive means to evaluate perioperative diastolic function, however conventional measures may be limited by the impact of changes in heart rate, rhythm and loading conditions. Newer echocardiographic modalities are reportedly less sensitive to acute changes in loading conditions, and may therefore complement the use of conventional echocardiographic techniques in the perioperative period.
Summary:
The availability of effective technology for diagnosing the presence and progression of perioperative diastolic function should assist in the identification of high-risk cardiac surgical patients who may benefit from appropriate triaging and therapeutic intervention.
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