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Upper-extremity Approach for Secondary Access in Transfemoral Transcatheter Aortic Valve Implantation
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Prognostic Model of Typical Complications Caused by Transcatheter Aortic Valve Replacement

E A Ovcharenko1, K U Klyshnikov2, V I Ganyukov3

  • 1Head of Laboratory, Department of Experimental and Clinical Cardiology, Research Institute for Complex Issues of Cardiovascular Diseases, 6 Sosnovy Blvd, Kemerovo, 650002, Russia.

Sovremennye Tekhnologii V Meditsine
|September 13, 2021
PubMed

Insights

This study developed a prognostic model using discriminant analysis to predict cardiac conduction disturbances and paraprosthetic regurgitation after transcatheter aortic valve replacement. Key predictors include left ventricular posterior wall thickness and septal thickness.

Area of Science:

  • Cardiology
  • Medical Engineering
  • Biomedical Statistics

Background:

  • Transcatheter aortic valve replacement (TAVR) is a common procedure for aortic valve stenosis.
  • Postoperative complications such as cardiac conduction disturbances and paraprosthetic regurgitation can impact patient outcomes.
  • Accurate risk stratification is crucial for optimizing TAVR procedures.

Purpose of the Study:

  • To develop a prognostic model for assessing the risk of postoperative cardiac conduction disturbance and paraprosthetic regurgitation following TAVR.
  • To identify key preoperative indicators predictive of these complications.

Main Methods:

  • Statistical discriminant analysis was employed.
  • Clinical data from 10 patients receiving CoreValve prostheses were analyzed.
  • Echocardiographic hemodynamic and functional parameters were assessed pre- and postoperatively.

Main Results:

  • Significant changes in left ventricular myocardial hypertrophy severity were observed.
  • Discriminant analysis identified critical preoperative factors for left bundle branch block and paraprosthetic regurgitation.
  • Left ventricular posterior wall thickness, interventricular septal thickness, left atrium dimension, and myocardial mass were key predictors.

Conclusions:

  • The developed prognostic model, using weighting coefficients, can assess the risk of TAVR-related postoperative complications.
  • Further refinement of the linear equation's coefficients is needed to reduce false-positive results.

Keywords:
cardiac conduction disturbancesdiscriminant analysisparaprosthetic regurgitationtranscatheter aortic valve replacement

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