BACKGROUND: To evaluate the heart rate variability (HRV) during the first 24 h after a @entity583 ( @entity583 ), and to study its relationship with other clinical variables and in-hospital follow-up. @entity1 AND METHODS: 101 @entity1 (age < 80 years) with @entity583 in sinus rhythm were prospectively studied. A Holter monitoring was performed during the first 24 h. The heart rate (HR), standard deviation of RR intervals (SDRR) and the histogram at different levels were analyzed, as well as the mean and standard deviation of RR intervals in an early 5 min record. The results were compared with the clinical characteristics and the in-hospital outcome of the @entity1 . RESULTS: HRV was lower in @entity1 , @entity101 and @entity1 who did not receive thrombolytic agents. In @entity1 without @entity712 , @entity583 's (SDRR: 52.8 [20.6] and 42.2 [16.9], respectively; p < 0.05). HRV was significantly decreased as Killip group increased, as well as in @entity1 who developed late @entity712 . The development of @entity2224 was associated to a low HRV in the 24 h analysis (SDRR: 30.2 [15.6] for the 6 @entity1 with VF/VT vs 46.8 [20.1] for the rest; p < 0.05), as well as in the early 5 min record (29.8 [14.8] and 50.8 [35.8], respectively; p < 0.05). CONCLUSIONS: During the first 24 h after @entity583 the HRV is related to some clinical variables and to @entity583 location (higher in @entity583 ). @entity1 who develop @entity712 or @entity943 before hospital discharge have a higher HR and a significantly decreased HRV.

[Heart rate variability during the first 24 hours of XXXX ].

@entity1 :: ('9606', 'Species') :: ['women', 'Patients', 'patients', 'patient', 'PATIENTS'] @entity712 :: ('MESH:D006333', 'Disease') :: ['heart failure'] @entity101 :: ('MESH:D006973', 'Disease') :: ['hypertensives'] @entity2224 :: ('MESH:D014693', 'Disease') :: ['ventricular tachycardia or fibrillation'] @entity583 :: ('MESH:D009203', 'Disease') :: ["inferior MI's had lower HR and higher HRV than anterior MI", 'myocardial infarction', 'MI', 'inferior MI'] @entity943 :: ('MESH:D001145', 'Disease') :: ['ventricular arrhythmias']
@entity583 :: (MESH:D009203,Disease) :: ['acute myocardial infarction']
