Hemodynamic Characterization of Different Mental Stress Tests

1984 ◽  
pp. 923-930 ◽  
Author(s):  
L. Tavazzi ◽  
G. Mazzuero ◽  
A. Giordano ◽  
A. M. Zotti ◽  
G. Bertolotti
Keyword(s):  
Mental Stress ◽  
Stress Tests

Hemodynamic Characterization of Different Mental Stress Tests

1984 ◽  
pp. 923-930 ◽  
Author(s):  
L. Tavazzi ◽  
G. Mazzuero ◽  
A. Giordano ◽  
A. M. Zotti ◽  
G. Bertolotti
Keyword(s):  
Mental Stress ◽  
Stress Tests

Characterization of CMOS Structures (0.6 µm process) Submitted to HBM and COM ESD Stress Tests

1997 ◽  
Author(s):  
G. Meneghesso ◽  
E. Zanoni ◽  
P. Colombo ◽  
M. Brambilla ◽  
R. Annunziata ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Electrostatic Discharge ◽  
Stress Test ◽  
Complete Characterization ◽  
Stress Tests ◽  
Test Procedures ◽  
Emission Microscopy ◽  
Fast Rise ◽  
Scanning Electron

Abstract In this work, we present new results concerning electrostatic discharge (ESD) robustness of 0.6 μm CMOS structures. Devices have been tested according to both HBM and socketed CDM (sCDM) ESD test procedures. Test structures have been submitted to a complete characterization consisting in: 1) measurement of the tum-on time of the protection structures submitted to pulses with very fast rise times; 2) ESD stress test with the HBM and sCDM models; 3) failure analysis based on emission microscopy (EMMI) and Scanning Electron Microscopy (SEM).

scholarly journals Laboratory mental stress tests are weak inducers of myocardial ischemia

1991 ◽  
Vol 17 (2) ◽  
pp. A169
Author(s):  
Thomas P. Gumbrielle ◽  
Laurel Fogarty ◽  
Phillipa Sobb ◽  
Roslyn Markham ◽  
David T. Kelly ◽  
...  
Keyword(s):  
Myocardial Ischemia ◽  
Mental Stress ◽  
Stress Tests

Age-related differences in cardiovascular reactions to mental stress tests in women.

1990 ◽  
Vol 9 (1) ◽  
pp. 18-34 ◽  
Author(s):  
Andrew Steptoe ◽  
Jennifer Moses ◽  
Sara Edwards
Keyword(s):  
Mental Stress ◽  
Stress Tests ◽  
Age Related ◽  
Cardiovascular Reactions

Cardiovascular reactivity in isometric exercise and mental arithmetic in children

1994 ◽  
Vol 76 (1) ◽  
pp. 146-150 ◽  
Author(s):  
H. A. Verhaaren ◽  
R. M. Schieken ◽  
P. Schwartz ◽  
M. Mosteller ◽  
D. Matthys ◽  
...  
Keyword(s):  
Cardiovascular Reactivity ◽  
Stress Responses ◽  
Mental Stress ◽  
Mental Arithmetic ◽  
Isometric Exercise ◽  
Left Ventricular ◽  
Stress Tests ◽  
Isometric Handgrip ◽  
Cardiovascular Stress ◽  
Changes Over Time

In children, we studied noninvasively the cardiovascular stress responses, including changes over time of systolic blood pressure (SBP), heart rate (HR), and stroke volume (SV) in isometric handgrip (IHG) and mental arithmetic. Specifically, we asked whether 1) these cardiovascular stress responses were different for the two stress conditions in children, 2) these responses differed in boys and girls, and 3) the anthropometric variables related to these stress responses. SV differed significantly between IHG and mental arithmetic over the entire stress period. This may reflect higher systemic vascular resistance during IHG. HR in boys was lower than in girls over the entire period of stress in both stress tests. This observation cannot be attributed to differences in conditioning, because this should not influence responses to isometric or mental stress. A larger left ventricular mass was related to higher SVs. A marked relationship was found between HR and SBP and between HR and SV. No relationship was found between SBP and SV.

Cardiac function during mental stress: cholinergic modulation with pyridostigmine in healthy subjects

2003 ◽  
Vol 105 (2) ◽  
pp. 161-165 ◽  
Author(s):  
Isis Délio SANT'ANNA ◽  
Eduardo Branco DE SOUSA ◽  
Alvaro Villela DE MORAES ◽  
Débora Lopes LOURES ◽  
Evandro Tinoco MESQUITA ◽  
...  
Keyword(s):  
Oral Administration ◽  
Mental Stress ◽  
Healthy Subjects ◽  
Mental Arithmetic ◽  
Systolic Pressure ◽  
Left Ventricular Diastolic Function ◽  
Left Ventricular ◽  
Stress Tests ◽  
Mean Velocity ◽  
Double Blind

Mentally or emotionally stressful situations occur throughout our lives and cause physiological haemodynamic responses. In patients with coronary artery disease, such events can also induce myocardial ischaemia and ventricular arrhythmias, increasing mortality rates. The purpose of the present study was to determine the acute effects of the oral administration of pyridostigmine, a reversible cholinesterase inhibitor and thus an indirect cholinomimetic drug, on echocardiographic variables during mental stress in healthy subjects. A total of 18 healthy young volunteers were subjected to mental stress tests (mental arithmetic and the Stroop colour–word test) 2 h after the oral administration of either placebo or pyridostigmine bromide (45 mg), using a balanced-randomized, double-blind, crossover protocol. During mental stress, heart rate (pyridostigmine, 64±1 beats/min; placebo, 70±1 beats/min; P=0.0003) and diastolic blood pressure (pyridostigmine, 66±2 mmHg; placebo, 79±3 mmHg; P=0.01) were lower in the pyridostigmine group, but systolic pressure was not (pyridostigmine, 124±3 mmHg; placebo, 123±3 mmHg; P=0.40). There were no detectable abnormalities in the left ventricular wall motion score during mental stress, but left ventricular outflow tract mean velocity (pyridostigmine, 0.68±0.02 m/s; placebo, 0.64±0.02 m/s; P<0.05) and mitral inflow velocity deceleration (placebo, 4.05±0.18 m/s2; pyridostigmine, 4.41±0.16 m/s2; P<0.05) were higher in the pyridostigmine group. In conclusion, cholinergic stimulation with pyridostigmine seems to increase left ventricular diastolic function during mental stress in healthy subjects.

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