JOURNAL ARTICLE

Baseline predictors of cardiac events after cardiac resynchronization therapy in patients with heart failure secondary to ischemic or nonischemic etiology

Osama I I Soliman, Dominic A M J Theuns, Folkert J ten Cate, Ashraf M Anwar, Attila Nemes, Wim B Vletter, Luc J Jordaens, Marcel L Geleijnse
American Journal of Cardiology 2007 August 1, 100 (3): 464-9
17659930
We evaluated the value of baseline parameters derived from tissue Doppler imaging (TDI) for event prediction in patients with heart failure (HF) secondary to ischemic and nonischemic cause who underwent cardiac resynchronization therapy (CRT). Seventy-four consecutive patients with HF (mean age 59 +/- 11 years) underwent CRT. Baseline clinical parameters included New York Heart Association class, 6-minute walking distance, HF cause, and diabetes. TDI-derived parameters included lateral and septal E/E' ratios defined as peak early left ventricular (LV) filling velocity (E wave) to TDI-derived peak early diastolic velocity of the mitral annulus (E' wave). During a median follow-up of 720 days, 21 patients (28%) had cardiac death or hospitalization for HF. These patients more often had an ischemic cause (p <0.05), diabetes (p <0.05), and restrictive filling (p <0.001), less often had LV dyssynchrony (p <0.05), and had higher septal and lateral E/E' ratios (p <0.001 for the 2 comparisons). In a multivariable model using a forward selection algorithm, only the lateral E/E' ratio remained an independent predictor of cardiac outcome. After 3 months of CRT, TDI-derived systolic mitral annular systolic and diastolic velocities improved significantly in nonischemic patients for the septal and lateral sides. In contrast, in ischemic patients no significant improvements were seen. Significant improvements were seen in septal and lateral E/E' ratios in ischemic and nonischemic patients. However, the improvement in lateral E/E' ratio was significantly less and absolute 3-months E/E' ratios were worse in ischemic patients. In conclusion, baseline lateral E/E' ratio is an independent predictor for cardiac events in patients with HF treated with CRT. The worse clinical outcome in ischemic patients may be due to failure of improvement in systolic and diastolic mitral annular velocities after CRT, resulting in a less pronounced improvement in LV filling pressures as demonstrated by this E/E' ratio.

Full Text Links

Find Full Text Links for this Article

Discussion

You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read
17659930
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"