Variabilidade da frequência cardíaca e infecções pulmonares pós revascularização miocárdica

Corrêa, Paulo Rogério; Catai, Aparecida Maria; Takakura, Isabela Thomaz; Machado, Maurício de Nassau; Godoy, Moacir Fernandes de

doi:10.1590/s0066-782x2010005000123

Cited by 20 publications

(17 citation statements)

References 20 publications

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“…This data corroborates those presented in other studies, where there was also a higher incidence of lung infection (CORREA et al, 2010;SOARES et al, 2011;OLIVEIRA et al, 2013. ).…”

Section: Discussionsupporting

confidence: 92%

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Factors associated with intubation extended in patients who undewent a heart surgery

et al. 2017

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ABSTRACT:This study was accomplished in order to identify the factors associated with prolonged intubation in patients who underwent cardiac surgery. This is a retrospective, analytical study, with a quantitative approach, performed in a large teaching hospital in the municipality of Uberaba (Minas Gerais). The data were collected from records of patients who underwent cardiac surgery. In order to identify the factors that may be associated with a prolonged intubation, a bivariate and a latter multivariate analysis were performed. The significance level was 0.05. the study population was constituted by 460 individuals. From these, 150 (32.6%) had prolonged intubation time (over 24 hours). The majority were male (60.9%) and the average age was 55.60 years (± 12.9). The results also showed that age over 60 years, the occurrence of pulmonary infection, the presence of comorbidities, intraoperative complications and the duration of the cardiopulmonary bypass were associated with the occurrence of prolonged intubation in these patients. Considering that prolonged intubation can often contribute to the occurrence of other complications in the postoperative period of a cardiac surgery, it is emphasized the importance of a careful preoperative evaluation. The findings of this study may contribute to the adoption of preventive measures in the clinical practice, with a view to the patient's safety and the quality of care.

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“…This data corroborates those presented in other studies, where there was also a higher incidence of lung infection (CORREA et al, 2010;SOARES et al, 2011;OLIVEIRA et al, 2013. ).…”

Section: Discussionsupporting

confidence: 92%

“…A study conducted in a large hospital in the interior of São Paulo, Brazil, showed that the presence of pulmonary infections in the postoperative period was associated with a longer MV use (CORREA et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Factors associated with intubation extended in patients who undewent a heart surgery

et al. 2017

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“…The spectral analysis was calculated using the Fast Fourier Transform algorithm [20]. Analysis in the time domain was performed by means of SDNN (ms) [standard deviation of normal-to-normal RR intervals] and RMSSD (ms) [root-mean square of differences between adjacent normal RR intervals in a time interval] [18].…”

Section: Methodsmentioning

confidence: 99%

Effects of an isotonic beverage on autonomic regulation during and after exercise

Moreno

Pastre

Ferreira

et al. 2013

Journal of the International Society of Sports Nutrition

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BackgroundWith prolonged physical activity, it is important to maintain adequate fluid balance. The impact of consuming isotonic drinks during and after exercise on the autonomic regulation of cardiac function is unclear. This study aimed to analyze the effects of consuming an isotonic drink on heart rate variability (HRV) during and after prolonged exercise.MethodsThirty-one young males (21.55 ± 1.89 yr) performed three different protocols (48 h interval between each stage): I) maximal exercise test to determine the load for the protocols; II) Control protocol (CP) and; III). Experimental protocol (EP). The protocols consisted of 10 min at rest with the subject in the supine position, 90 min of treadmill exercise (60% of VO2 peak) and 60 min of rest placed in the dorsal decubitus position. No rehydration beverage consumption was allowed during CP. During EP, however, the subjects were given an isotonic solution (Gatorade, Brazil) containing carbohydrate (30 g), sodium (225 mg), chloride (210 mg) and potassium (60 mg) per 500 ml of the drink. For analysis of HRV data, time and frequency domain indices were investigated. HRV was recorded at rest (5–10 min), during exercise (25–30 min, 55–60 min and 85–90 min) and post-exercise (5–10 min, 15–20 min, 25–30 min, 40–45 min and 55–60 min).ResultsRegardless of hydration, alterations in the SNS and PSNS were observed, revealing an increase in the former and a decrease in the latter. Hydrating with isotonic solution during recovery induced significant changes in cardiac autonomic modulation, promoting faster recovery of linear HRV indices.ConclusionHydration with isotonic solution did not significantly influence HRV during exercise; however, after exercise it promoted faster recovery of linear indices.

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“…In addition, Correa and coworkers [8] indicated that the nonlinear dynamics methods, at their respective cut-off levels, allowed for the identification of patients developing pulmonary infection in the postoperative period of surgical myocardial revascularization. However, it is not clear in the literature if this method has a prognostic value in coronary arterial disease subjects.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity, specificity and predictive values of linear and nonlinear indices of heart rate variability in stable angina patients

Pivatelli¹,

Santos²,

Fernandes³

et al. 2012

Int Arch Med

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BackgroundDecreased heart rate variability (HRV) is related to higher morbidity and mortality. In this study we evaluated the linear and nonlinear indices of the HRV in stable angina patients submitted to coronary angiography.MethodsWe studied 77 unselected patients for elective coronary angiography, which were divided into two groups: coronary artery disease (CAD) and non-CAD groups. For analysis of HRV indices, HRV was recorded beat by beat with the volunteers in the supine position for 40 minutes. We analyzed the linear indices in the time (SDNN [standard deviation of normal to normal], NN50 [total number of adjacent RR intervals with a difference of duration greater than 50ms] and RMSSD [root-mean square of differences]) and frequency domains ultra-low frequency (ULF) ≤ 0,003 Hz, very low frequency (VLF) 0,003 – 0,04 Hz, low frequency (LF) (0.04–0.15 Hz), and high frequency (HF) (0.15–0.40 Hz) as well as the ratio between LF and HF components (LF/HF). In relation to the nonlinear indices we evaluated SD1, SD2, SD1/SD2, approximate entropy (−ApEn), α1, α2, Lyapunov Exponent, Hurst Exponent, autocorrelation and dimension correlation. The definition of the cutoff point of the variables for predictive tests was obtained by the Receiver Operating Characteristic curve (ROC). The area under the ROC curve was calculated by the extended trapezoidal rule, assuming as relevant areas under the curve ≥ 0.650.ResultsCoronary arterial disease patients presented reduced values of SDNN, RMSSD, NN50, HF, SD1, SD2 and -ApEn. HF ≤ 66 ms2, RMSSD ≤ 23.9 ms, ApEn ≤−0.296 and NN50 ≤ 16 presented the best discriminatory power for the presence of significant coronary obstruction.ConclusionWe suggest the use of Heart Rate Variability Analysis in linear and nonlinear domains, for prognostic purposes in patients with stable angina pectoris, in view of their overall impairment.

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Variabilidade da frequência cardíaca e infecções pulmonares pós revascularização miocárdica

Cited by 20 publications

References 20 publications

Factors associated with intubation extended in patients who undewent a heart surgery

Factors associated with intubation extended in patients who undewent a heart surgery

Effects of an isotonic beverage on autonomic regulation during and after exercise

Sensitivity, specificity and predictive values of linear and nonlinear indices of heart rate variability in stable angina patients

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