Autonomic Nervous System Responses to Personal Stressful Events in Patients with Acute Myocardial Infarction

1998 ◽  
Vol 67 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Evie D. Tsouna-Hadjis ◽  
Dimitris N. Mitsibounas ◽  
George E. Kallergis ◽  
Dimitris A. Sideris
2020 ◽  
Vol 9 (5) ◽  
pp. 1481 ◽  
Author(s):  
Audrey Sagnard ◽  
Charles Guenancia ◽  
Basile Mouhat ◽  
Maud Maza ◽  
Marie Fichot ◽  
...  

Background: Atrial fibrillation (AF) is common after acute myocardial infarction (AMI) and associated with in-hospital and long-term mortality. However, the pathophysiology of AF in AMI is poorly understood. Heart rate variability (HRV), measured by Holter-ECG, reflects cardiovascular response to the autonomic nervous system and altered (reduced or enhanced) HRV may have a major role in the onset of AF in AMI patients. Objective: We investigated the relationship between autonomic dysregulation and new-onset AF during AMI. Methods: As part of the RICO survey, all consecutive patients hospitalized for AMI at Dijon (France) university hospital between June 2001 and November 2014 were analyzed by Holter-ECG <24 h following admission. HRV was measured using temporal and spectral analysis. Results: Among the 2040 included patients, 168 (8.2%) developed AF during AMI. Compared to the sinus-rhythm (SR) group, AF patients were older, had more frequent hypertension and lower left ventricular ejection fraction LVEF. On the Holter parameters, AF patients had higher pNN50 values (11% vs. 4%, p < 0.001) and median LH/HF ratio, a reflection of sympathovagal balance, was significantly lower in the AF group (0.88 vs 2.75 p < 0.001). The optimal LF/HF cut-off for AF prediction was 1.735. In multivariate analyses, low LF/HF <1.735 (OR(95%CI) = 3.377 (2.047–5.572)) was strongly associated with AF, ahead of age (OR(95%CI) = 1.04(1.01–1.06)), mean sinus-rhythm rate (OR(95%CI) = 1.03(1.02–1.05)) and log NT-proBNP (OR(95%CI) = 1.38(1.01–1.90). Conclusion: Our study strongly suggests that new-onset AF in AMI mainly occurs in a dysregulated autonomic nervous system, as suggested by low LF/HF, and higher PNN50 and RMSSD values.


2019 ◽  
Vol 13 (2) ◽  
pp. 124-127
Author(s):  
Sara Pinto ◽  
Raquel Ferreira ◽  
Anabela Gonzaga ◽  
José Mesquita Bastos

Paragangliomas (PGLs) are extra-adrenal neuroendocrine tumors, classified as sympathetic or parasympathetic according to their origin in the paraganglia of the autonomic nervous system. Sympathetic PGLs are mostly functional, presenting in a variable and non-specific way. We report a case of PGL, which was diagnosed further to an investigation of acute myocardial infarction in a postpartum woman, highlighting that the absence of typical symptoms may delay the diagnosis.


1994 ◽  
Vol 24 (2) ◽  
pp. 272 ◽  
Author(s):  
Ji Won Park ◽  
Ho Joong Youn ◽  
Wook Sung Chung ◽  
Joon Chul Park ◽  
Chul Min Kim ◽  
...  

Author(s):  
S. Goncharevskyi ◽  
M. Makarchuk ◽  
V. Martynyuk

Almost all processes in the human body in one way or another connected with the autonomic nervous system. That's why it is real to evaluate the functional state of the person by temperature characteristics of representative points of the autonomic nervous system. Location and information of these points are confirmed by fundamental research. However, simply measuring the temperature at some points may not be sufficient to establish any systematic changes in the human body. The establishment of such changes requires systematic assessment of interdependent significant relationships between these parameters.The main aim of our research was to study effects of myocardial infarction in the thoracic region of the autonomic nervous system. The temperature of representative areas of the thoracic autonomic nervous system we measured by infrared thermometer (Medisana FTO D-53340 , with an accuracy of 0.1 degree Celsius). Statistical analysis was conducted in the packet Statistics 10. The presence of a difference in the temperature coefficients of representative areas (p<0,05). For the left side of the spine characterized by a difference in Th1–Th5 segments, which confirms their diagnosis: Th1 – 0,931,12 (control) and -0,797,49 (experiment), Th2 – 1,571,12 and -0,486,70, Th3 – 1,582611,12325 and -0,663,36, Th4 – 0,85913 0,92611 and -1,74,64, Th5 – 0,923480,75469 and-1,615,73 respectively. For the right side of the thoracic spines: Th6 – 0,850,73 (control) and -0,797,49 (experiment), Th7 – -1,000,79 and -1,370,69, Th8 – -0,960,73 and -0,990,68, Th9 – -0,120,64 and -0,380,83, Th10 – -0,921,14 and -1,031,00, Th11 – -1,691,05 and -1,861,06, Th12- -1,651,15 and -1,961,12 respectively. We found that myocardial infarction is manifested in the thoracic spine. In an experimental group there is significant difference of temperature in all segments. We can also notice asymmetry of temperatue between the right and left side of the spine. In the test group there are a deviation from the normal temperature in the first five thoracic segments on the left side, which confirms their diagnosis. On the right side of the spine there are a deviation in the last seven segments, which may indicate the compensatory mechanisms of regulation of the system. We can observe the temperature asymmetry, which in long-term exposure can negatively affect to the body.


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