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Fig. 3 | BMC Cardiovascular Disorders

Fig. 3

From: A prognostic nomogram for event-free survival in patients with atrial fibrillation before cardiac resynchronization therapy

Fig. 3

Nomogram for patients with CRT in AF. The nomogram is a commonly used prognostic prediction tool in the field of oncology. It can forecast the probability of a certain clinical event in the future. Doctors can easily use the nomogram with following steps: (1) affirm the value of each predictor for a patient on the variable axis; (2) draw a line upward to Points axis and the number at the intersection will be the points for each variable; (3) sum up all the points of each patient and locate the calculated total number on the Total Points axis; and (4) draw a line downward to different survival axes to determine final probabilities of a given clinical event. For example, in a patient with AF who had severe tricuspid regurgitation and an NT-proBNP concentration of 2000 pg/mL without other risk factors before CRT, then his total points would be approximately 29 points. Therefore, his event-free survival at 1, 2 and 5 years after CRT is estimated to be 81, 72 and 38% after CRT, respectively. NTproBNP_pre, N-terminal pro brain natriuretic protein concentration before CRT; PHP, history of pulmonary hypertension; TR, tricuspid regurgitation; TSH, thyroid-stimulating hormone

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