Frederik H Verbrugge1,2, Philippe B Bertrand1,2, Endry Willems3, Ellen Gielen3, Wilfried Mullens1, Shivraman Giri4, W H Wilson Tang5, Subha V Raman6, David Verhaert1. 1. Department of Cardiology, Ziekenhuis Oost-Limburg, Schiepse Bos 6, Genk 3600, Belgium. 2. Doctoral School for Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium. 3. Department of Radiology, Ziekenhuis Oost-Limburg, Genk, Belgium. 4. Siemens Healthcare, Chicago, IL, USA. 5. Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, USA. 6. The Ohio State University, Columbus, OH, USA.
Abstract
AIMS: To use cardiac magnetic resonance (CMR) imaging with quantitative T2 mapping as surrogate for myocardial water content in patients with advanced decompensated heart failure (ADHF), compare these values with T2-values observed in chronic heart failure, and evaluate the change with decongestive therapy. METHODS AND RESULTS: Volumetric CMR measurements and quantitative T2 mapping were performed in 18 consecutive ADHF patients with clinical signs of volume overload. Eleven patients with stable heart failure were used as controls. Vasodilator therapy and diuretics were administered to achieve a pulmonary arterial wedge pressure (PAWP) of <18 mmHg and central venous pressure (CVP) of <12 mmHg, after which CMR was repeated. ADHF patients (62 ± 12 years; 89% male; left ventricular ejection fraction 23 ± 8%) presented with low cardiac index (2.08 ± 0.59 L/min/m2), high PAWP (25 ± 7 mmHg), and high CVP (14 ± 5 mmHg). After decongestion, the patients had a significant increase in cardiac index (+0.41 ± 0.53 L/min/m2; P = 0.005) and decreases in both PAWP (-9 ± 6 mmHg; P < 0.001) and CVP (-6 ± 5 mmHg; P < 0.001). At baseline, global left ventricular T2-values were higher in ADHF patients compared with controls (59.5 ± 4.6 vs. 54.7 ± 2.2 ms, respectively; P = 0.001). After decongestion, T2-values fell significantly to 55.9 ± 5.1 ms (P = 0.001), comparable with controls (P = 0.580). In contrast, psoas muscle T2-values were similar at baseline (38.6 ± 4.4 ms) vs. after decongestion (37.8 ± 4.8 ms; P = 0.397). Each 1 ms decrease in global left ventricular T2-value during decongestion was associated with a 1.14 ± 0.40 mmHg decrease in PAWP (P = 0.013), after correction for age and gender. CONCLUSION: Patients presenting with ADHF and volume overload have increased global left ventricular-but not psoas muscle-T2-values, which decrease with successful decongestion. Relief of myocardial oedema correlates with haemodynamic unloading. Published on behalf of the European Society of Cardiology. All rights reserved.
AIMS: To use cardiac magnetic resonance (CMR) imaging with quantitative T2 mapping as surrogate for myocardial water content in patients with advanced decompensated heart failure (ADHF), compare these values with T2-values observed in chronic heart failure, and evaluate the change with decongestive therapy. METHODS AND RESULTS: Volumetric CMR measurements and quantitative T2 mapping were performed in 18 consecutive ADHF patients with clinical signs of volume overload. Eleven patients with stable heart failure were used as controls. Vasodilator therapy and diuretics were administered to achieve a pulmonary arterial wedge pressure (PAWP) of <18 mmHg and central venous pressure (CVP) of <12 mmHg, after which CMR was repeated. ADHF patients (62 ± 12 years; 89% male; left ventricular ejection fraction 23 ± 8%) presented with low cardiac index (2.08 ± 0.59 L/min/m2), high PAWP (25 ± 7 mmHg), and high CVP (14 ± 5 mmHg). After decongestion, the patients had a significant increase in cardiac index (+0.41 ± 0.53 L/min/m2; P = 0.005) and decreases in both PAWP (-9 ± 6 mmHg; P < 0.001) and CVP (-6 ± 5 mmHg; P < 0.001). At baseline, global left ventricular T2-values were higher in ADHF patients compared with controls (59.5 ± 4.6 vs. 54.7 ± 2.2 ms, respectively; P = 0.001). After decongestion, T2-values fell significantly to 55.9 ± 5.1 ms (P = 0.001), comparable with controls (P = 0.580). In contrast, psoas muscle T2-values were similar at baseline (38.6 ± 4.4 ms) vs. after decongestion (37.8 ± 4.8 ms; P = 0.397). Each 1 ms decrease in global left ventricular T2-value during decongestion was associated with a 1.14 ± 0.40 mmHg decrease in PAWP (P = 0.013), after correction for age and gender. CONCLUSION: Patients presenting with ADHF and volume overload have increased global left ventricular-but not psoas muscle-T2-values, which decrease with successful decongestion. Relief of myocardial oedema correlates with haemodynamic unloading. Published on behalf of the European Society of Cardiology. All rights reserved.
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