Sleep quality in heart failure

INTERVENTION: Behavior In the experimental group, progressive muscle relaxation is taught during three sessions in each patient.The first session is hold after stabilization of clinical signs, for 30 minute. The second session is done at the evening of the same day, for 15 minutes. The third session is hold the next morning, for 15 minutes. After obtaining properly feedback, relaxation educational booklets associated with a CD and an event recording check list are delivered to the patients and asked them to do this technique twice daily( once in the morning and once at night before sleeping) for one month. In order to evaluation,telephone follow up of patients is done by researcher weekly. Intervention 1: In the experimental group, progressive muscle relaxation is taught during three sessions in each patient.The first session is hold after stabilization of clinical signs, for 30 minute. The second session is done at the evening of the same day, for 15 minutes. The third session is hold the next morning, for 15 minutes. After obtaining properly feedback, relaxation educational booklets associated with a CD and an event recording check list are delivered to the patients and asked them to do this technique twice daily( once in the morning and once at night before sleeping) for one month. In order to evaluation,telephone follow up of patients is done by researcher weekly. Intervention 2: The patients of control group will receive the usual care. The patients of control group will receive the usual care. CONDITION: Sleep Disorders Sleep Quality. ; Sleep Disorders PRIMARY OUTCOME: Sleep quality. Timepoint: Before Intervention, one month after Intervention. Method of measurement: Pittsburgh Sleep Quality Index. INCLUSION CRITERIA: INCLUSION CRITERIA: age older than18 years old; NYHA class 2 and 3; at least 3 months past history; established clinical signs; Pittsburgh score of 5 or higher; no consumption of sedatives, antidepressants and antihistamines. Exclusion criteria: no cooperation, consumption of sedatives, not doing relaxation more than 10% ( 6 times ) during the study and be candidate for cardiac invasive procedures.