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[Prognostic value of selected hemodynamic parameters featuring left ventricular systolic and diastolic function in
J S Dubiel1, P Petkow-Dimitrow, G Kałuza
1II Klinika Kardiologii Instytutu Kardiologii Akademii Medycznej, Krakowie.
Insights
This study identified key hemodynamic parameters for predicting survival in dilated cardiomyopathy (DCM) patients. A multifactorial analysis is recommended, as no single factor dominates prognosis for DCM survival.
Area of Science:
- Cardiology
- Hemodynamics
- Medical Prognosis
Context:
- Dilated cardiomyopathy (DCM) presents a significant challenge in predicting patient survival.
- Accurate prognostic indicators are crucial for managing DCM patients.
Purpose:
- To identify the most valuable hemodynamic parameters for prognosing survival in patients with dilated cardiomyopathy (DCM).
- To compare hemodynamic variables between patient subgroups with different survival durations.
Summary:
- Forty DCM patients underwent cardiac catheterization and hemodynamic assessment.
- Key parameters including negative dP/dt (rate of pressure decline), LVEADP (left ventricular end-diastolic pressure), LVEDVI (left ventricular end-diastolic volume index), EF (ejection fraction), LVEDP (left ventricular end-diastolic pressure), MCSD (midwall circumferential stress), and positive dP/dt max (maximum rate of pressure increase) were analyzed.
- Survival analysis, including Cutler-Ederer tables, correlated these parameters with patient outcomes over a mean follow-up of 43 months.
Impact:
- Identified specific hemodynamic parameters (-dp/dt min, LVEADP, LVEDVI, EF, LVEDP, MCSD, +dp/dt max) as prognostically valuable for DCM.
- Highlights the need for a multifactorial approach in predicting DCM survival, as individual parameters are not solely dominant.
- 32% of patients survived longer than 5 years, providing a benchmark for survival rates in this cohort.
Unlabelled:
The goal of the study was the choice of hemodynamic parameters most useful in prognosing the survival of the patients with dilated cardiomyopathy (DCM). The investigated group comprised 40 patients, who underwent left and right cardiac catheterization with left ventricular (LV) quantitative angiography. The day of catheterization was the starting point of the observation, which was performed by means of follow-up regular examinations and information from questionnaires sent to and returned by the patients or their families. The follow-up spanned from 1 to 120 months (means = 43). The hemodynamic parameters of LV systole, ejection, isovolumic relaxation and filling were assessed. The patients were divided into two subgroups featuring survival of less and more than 3 years, respectively. In these two subgroups the following parameters were compared: LVEADP, T constant of relaxation, LVEDP, LVEDVI,+dp/dt max, EF, LV mass/volume ratio, MCSD (midwall circumferential LV stress in early diastole), -dp/dt min. They were also correlated with survival and analyzed in Cutler-Ederer survival tables.
Conclusions:
1. 32% of patients survived more than 5 years. 2. The prognostically most valuable parameters seem to be: -dp/dt min, LVEADP, LVEDVI, EF, LVEDP, MCSD, +dp/dt max. 3. The prognosing of survival in patients with DCM should be based on a multifactorial analysis because of lack of domination of any single factor.