scholarly journals Assessment of Measurement Reliability for the IPN Test in Cardiac Patients

2020 ◽  
Vol 9 (5) ◽  
pp. 1552
Author(s):  
Łukasz Oleksy ◽  
Agnieszka Skiba ◽  
Iwona Sulowska ◽  
Marcin Trębowicz ◽  
Bartosz Rukasz ◽  
...  
Keyword(s):  
Heart Rate ◽  
Performance Test ◽  
Diastolic Pressure ◽  
Stress Test ◽  
Cycle Ergometer ◽  
Stress Tests ◽  
Target Heart Rate ◽  
Interclass Correlation ◽  
Patient Load ◽  
Short Test

Cardiological diagnostics use maximal and submaximal tests with increasing load. Maximal stress tests are currently considered the gold standard. The Institut für Prävention und Nachsorge, Cologne (IPN) test may be an alternative when maximal patient load is not indicated. The universality of the test is well-documented in sport, but the reliability of this test is unknown. The aim of this study was to assess between-trial and between-day reliability for parameters assessed by the IPN stress test in cardiological patients.: In a study of 24 patients aged 39 to 79 years with cardiovascular diseases, the IPN cycle ergometer short test was performed (submaximal performance test). The reliability of heart rate, systolic and diastolic pressure, absolute power at submaximal load, relative performance at submaximal load and target heart rate were assessed. Good (Interclass Correlation Coefficient (ICC) values ranged from 0.832 to 0.894) and excellent (ICC values ranged from 0.904 to 0.969) between-trial reliability was noted. Between-day reliability was good (ICC values from 0.777 to 0.895) and excellent (ICC values from 0.922 to 0.950). The obtained results suggest that the IPN test may be a reliable tool for use in the assessment of cardiological patients, avoiding the implementation of maximal efforts when excessive patient load is not recommended.

scholarly journals Type-D Personality in Unemployed Subjects: Prevalence, Self-Efficacy and Heart Rate Variability/Autonomic Response

2017 ◽  
Vol 10 (1) ◽  
pp. 94-103 ◽  
Author(s):  
Katja Petrowski ◽  
Katharina Wendt ◽  
Susann Wichmann ◽  
Martin Siepmann
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Health Effects ◽  
Self Efficacy ◽  
Stress Test ◽  
Type D Personality ◽  
Autonomic Response ◽  
Stress Tests ◽  
Public Health Perspective ◽  
Type D

Background:Unemployment may impair mental and physical health. The influencing factors causing such negative effects are relevant from an individual and public health perspective. The personality as one possible influencing factor was discussed. This study investigated the prevalence of the type-D personality in an unemployed population and its connections to socio-demographic, psychological and heart rate variability (HRV) parameters.Methods:A questionnaire set including socio-demographics, type-D scale (DS14), Complaint list (BL), Beck-Depression-Inventory II (BDI-II) and the General Self-Efficacy Scale (GSE) was handed out to 203 unemployed individuals [126 females, mean age ± SD: 42.36 ± 11.08]. For HRV assessment (RMSSD), a subsample of 83 participants [50 females, median age ± IQR: 47.00 ± 17.00] passed the “stress-tests” (timed breathing, d2-attention-stress-test, math test) while heart frequency (HF) was acquiredviathe Stressball software (BioSign GmbH, Ottenhofen, Germany).Results:53% of the unemployed had a type-D personality. Compared to non-type-D individuals, type-D individuals had rarely children and by trend a lower educational level; they showed significantly higher scores in the BDI-II and lower scores in the GSE and BL. No differences were observed in mean HF or RMSSD during all the stress-tests.Conclusion:The HRV of individuals with a type-D personality is no worse than that of individuals without a type-D personality. Type-D personality was significantly associated with negative health effects regarding depressiveness, self-efficacy and physical complaints. Our main findings implicate that the DS14 could serve as a short and reliable screening instrument to select concerned unemployed individuals who might be at risk for negative health effects for adequate intervention.

Abstract 130: In Patients Referred for a Stress Echo-cardiogram, Baseline Left Bundle Branch Block is Associated with Increased Mortality Independent of Stress Test Results or History of Heart Failure

2015 ◽  
Vol 8 (suppl_2) ◽  
Author(s):  
Neil Yager ◽  
Tina Ramineni ◽  
Salem Badr ◽  
Adam Parker ◽  
Lulu Zhang
Keyword(s):  
Heart Rate ◽  
Stress Test ◽  
Test Duration ◽  
Test Results ◽  
Target Heart Rate ◽  
Long Term Outcomes ◽  
Double Product ◽  
Bundle Branch Block ◽  
History Of

Background: The role of asymptomatic LBBB in long-term survival for patients without heart disease remains unclear. Therefore, we perform a retrospective review to compare the roles of heart failure and conduction dysfunction in long-term outcomes. Methods: Records of 398 consecutive patients referred for chest pain or dyspnea evaluation with stress echocardiogram at a single tertiary care center were reviewed. Reasons for stress test, demographic data, including age and gender, co-morbidities including cardiovascular disease (CAD), peripheral vascular disease (PVD), hypertension (HTN), and diabetes mellitus (DM), and use of ace-inhibitors and beta-blockers were collected. Stress test results including maximal heart rate, duration of test, duration of recovery, double product and ischemia shown by echo were recorded. ANOVA, chi-square, and logistic regression analyses were performed. The mean follow-up length was 76+/-18 months. The study was approved by IRB. Results: Left bundle branch block (LBBB) was observed in 11 of 398 patients (2.7%). LBBB was not associated with history of CAD and CAD risk factors or equivalents: HTN, DM, PVD, or smoking. There was a trend towards a 3x higher mortality rate for patients with LBBB than for patients without LBBB and for patients with CHF (p=0.2) Results from the stress test were analyzed. There was no significant difference in age or gender. Patients with LBBB had a lower test duration, lower rates of ischemia by ECHO, and a lower double product than patients without LBB and with CHF (p<0.05). Furthermore, patients with LBBB had trend towards a lower time to recovery and a greater percentage of patients with LBBB reached target heart rate than patients with CHF (p<0.05). The highest mortality was observed in patients with LBBB and no evidence of stress-induced ischemia (2 out of 7 patients, p=0.021). Discussion: Traditionally, CHF has thought to be one of the single most important factors determining long-term outcomes in patients referred for stress-testing. However, our study found the highest mortality to be observed in patients with LBBB and no evidence of stress-induced ischemia. Additionally, significantly more patients with LBBB reached target heart rate and had shorter duration of recovery. Overall, the stress test results suggest LBBB to contribute to higher mortality by mechanisms independent of its impact on ventricular function.

Thermal and circulatory responses during exercise: effects of hypohydration, dehydration, and water intake

1997 ◽  
Vol 82 (6) ◽  
pp. 2028-2035 ◽  
Author(s):  
Lawrence E. Armstrong ◽  
Carl M. Maresh ◽  
Catherine V. Gabaree ◽  
Jay R. Hoffman ◽  
Stavros A. Kavouras ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heat Stress ◽  
Water Intake ◽  
Rectal Temperature ◽  
Stress Test ◽  
Plasma Osmolality ◽  
Interactive Effects ◽  
Stress Tests ◽  
Physiological Strain ◽  
Exercise Induced

Armstrong, Lawrence E., Carl M. Maresh, Catherine V. Gabaree, Jay R. Hoffman, Stavros A. Kavouras, Robert W. Kenefick, John W. Castellani, and Lynn E. Ahlquist. Thermal and circulatory responses during exercise: effects of hypohydration, dehydration, and water intake. J. Appl. Physiol. 82(6): 2028–2035, 1997.—This investigation examined the distinct and interactive effects of initial hydration state, exercise-induced dehydration, and water rehydration in a hot environment. On four occasions, 10 men performed a 90-min heat stress test (treadmill walking at 5.6 km/h, 5% grade, 33°C, 56% relative humidity). These heat stress tests differed in pretest hydration [2 euhydrated (EU) and 2 hypohydrated (HY) trials] and water intake during exercise [2 water ad libitum (W) and 2 no water (NW) trials]. HY + NW indicated greater physiological strain than all other trials ( P < 0.05–0.001) in heart rate, plasma osmolality (Posm), sweat sensitivity (g / °C ⋅ min), and rectal temperature. Unexpectedly, final HY + W and EU + W responses for rectal temperature, heart rate, and Posm were similar, despite the initial 3.9 ± 0.2% hypohydration in HY + W. We concluded that differences in pretest Posm (295 ± 7 and 287 ± 5 mosmol/kg for HY + W and EU + W, respectively) resulted in greater water consumption (1.65 and 0.31 liter for HY + W and EU + W, respectively), no voluntary dehydration (0.9% body mass increase), and attenuated thermal and circulatory strain during HY + W.

scholarly journals Pharmacological stress test for myocardial ischemia when Adenosine is contraindicated: prospective documentation of side effects in over 700 patients with COPD or bronchial asthma

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
M Keller ◽  
S Silber
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Side Effects ◽  
Bronchial Asthma ◽  
Stress Test ◽  
Av Block ◽  
Stress Tests ◽  
Pharmacological Stress ◽  
History Of ◽  
Pharmacological Stress Test

Abstract Background In the face of an increasingly elder population, physical exercise tests become less feasible with an increasing need for pharmacological stress tests, preferably with imaging techniques. For myocardial stress tests provoking myocardial ischemia, vasodilator stress is most frequently used. Whereas Dipyridamole should be obsolete, the predominant drug applied within this context is Adenosine for myocardial scintigraphy, magnetic resonance imaging and FFR. Adenosine, however, is contraindicated in patients with COPD or bronchial asthma, predominantly due to a possible exacerbation of bronchospasm or other pulmonary side effects. In contrast, Regadenoson, was especially developed as a highly selective A2A receptor agonist to circumvent these problems. Methods Regadenoson was applied with the standard injection dose of 400 μg in 780 consecutive patients with a history of COPD or bronchial asthma for SPECT myocardial perfusion scintigraphy. 12% of the patients had a preexisting first degree AV-block. Blood pressure, heart rate and possible side effects were prospectively monitored and documented for 10 minutes after the injection. Results The mean age was 70.8±8.9 years, 52% of the patients were female, 48% were male. 69% had a history of COPD and 31% of bronchial asthma. The maximum increase in heart rate was significant from 66.1±8.1 to 98.3±17.4 bpm. The maximum decrease in systolic blood pressure was significant from 124.3±12.9 to 117.3±24.7 mmHg. Most frequent side effects were a feeling if increased breathing (73%), headache (22%), feeling of warmth (22%), pressure in the stomach (17%) and pressure in the chest (16%). Complications: only 1 patient (without preexisting first degree AV-block) developed a systolic drop in blood pressure from 107 to 60 mmHg with transient severe dyspnoea. No induction of bronchospasm or other pulmonary side effects were observed. Conclusion In patients with COPD or bronchial asthma undergoing a pharmacological stress test, Adenosine is contraindicated due to its – potentially severe – pulmonary side effects, Regadenoson is the vasodilator of choice in these patients. In our series, no severe complication was observed – even not in patients with a preexisting first degree AV-block. Funding Acknowledgement Type of funding source: None

scholarly journals CardiacProfileR: An R package for extraction and visualisation of heart rate profiles from wearable fitness trackers

2018 ◽  
Author(s):  
Djordje Djordjevic ◽  
Beni K. Cawood ◽  
Sabrina K. Rispin ◽  
Anushi Shah ◽  
Leo H. H. Yim ◽  
...  
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Stress Test ◽  
R Package ◽  
Exercise Stress ◽  
Stress Tests ◽  
Activity Data ◽  
Physical Activity Data ◽  
Rate Profile ◽  
Fitness Trackers

AbstractA person’s heart rate profile, which consists of resting heart rate, increase of heart rate upon exercise and recovery of heart rate after exercise, is traditionally measured by electrocardiography during a controlled exercise stress test. A heart rate profile is a useful clinical tool to identify individuals at risk of sudden death and other cardiovascular conditions. Nonetheless, conducting such exercise stress tests routinely is often inconvenient and logistically challenging for patients. The widespread availability of affordable wearable fitness trackers, such as Fitbit and Apple Watch, provides an exciting new means to collect longitudinal heart rate and physical activity data. We reason that by combining the heart rate and physical activity data from these devices, we can construct a person’s heart rate profile. Here we present an open source R package CardiacProfileR for extraction, analysis and visualisation of heart rate dynamics during physical activities from data generated from common wearable heart rate monitors. This package represents a step towards quantitative deep phenotyping in humans. CardiacProfileR is available via an MIT license at https://github.com/VCCRI/CardiacProfileR.

scholarly journals Neuroendocrine responses to a psychosocial stress test for larger groups of participants: comparison of two test exposures

2020 ◽  
Vol 54 (4) ◽  
pp. 255-259
Author(s):  
Jakub Rajcani ◽  
Petra Solarikova ◽  
Igor Brezina ◽  
Daniela Jezova
Keyword(s):  
Heart Rate ◽  
Stress Responses ◽  
Psychosocial Stress ◽  
Stress Test ◽  
Anxiety State ◽  
Stress Tests ◽  
Social Evaluative Threat ◽  
Before And After ◽  
Neuroendocrine Responses ◽  
The Individual

Abstract Objective. Individual stress tests characterized by social evaluative threat and uncontrollability are known to elicit strong neuroendocrine responses. We tested whether a psychosocial stressor submitted to a larger group of participants (up to 60) may elicit comparable stress responses. Methods. A total of 59 adult subjects (33 women, 26 men) participated in the study, whereas 24 of them suffered from allergy and 35 were healthy. The stress test consisted of a distraction stress task followed by a speech task, in which the participants were randomly subjected to questions related to a topic that they had to prepare as well as arithmetic questions in front of their peers and a committee that responded in standardized and non-supporting manner. State and trait anxiety inventory (STAI) for anxiety state was administrated before and after the test and salivary samples taking. The test was repeated after five months. Results. The results showed that the shared psychosocial stress application in a larger group of subjects was prosperous. The larger group test (LGST) resulted in an enhanced subjectively experienced stress and an intensive sympathetic nervous system activation, reflected by elevated salivary alpha-amylase activity and the heart rate. The cortisol increment after exposure to the stress test was not significant. Repeated exposure to the test failed to reproduce the original stress responses with exception of the heart rate rise. Conclusions. In a larger group of subjects, the psychosocial stress test did elicit stress responses similar to the individual stress tests. Our data indicate that the above-mentioned stress test is apparently not an appropriate approach for the repeated use.

scholarly journals Quality of One-channel Telemetric ECG Sensor Signal in Maximum Exercise Stress Tests

2019 ◽  
Vol 19 (3) ◽  
pp. 79-85 ◽  
Author(s):  
Boris Širaiy ◽  
Roman Trobec ◽  
Vladimir Ilić
Keyword(s):  
Stress Test ◽  
Cycle Ergometer ◽  
The Body ◽  
Exercise Stress ◽  
Ecg Signal ◽  
Stress Tests ◽  
Concurrent Use ◽  
Significant Difference ◽  
Sensor Positions

Abstract The aim of this study was to evaluate the quality of the ECG signal, obtained from a telemetric body-sensor device during a maximum stress test on an ergometer. Twenty-three subjects, 13 males, were included in the study (20.56±1.19 years). Two different sensor positions were verified on each subject by the concurrent use of two ECG sensors. Each subject participated in four exercise stress tests: two on a treadmill and two on a cycle ergometer. In the first test, both sensors were attached to self-adhesive skin electrodes on the body, while in the second test the sensors were additionally fixed with self-adhesive tapes. The measurements were compared on both ergometers, in terms of the ECG sensors’ positions and the methods used for the sensors’ fixation. The results showed a significant difference in the running speed that provides an assessable ECG signal between the non-fixed and the fixed sensors at position left inferior (p = 0.000), as well as between the positions left inferior and left superior in the first (p = 0.019), and in the second test (p = 0.000) on the treadmill. On the cycle ergometer the differences were significant between the positions left inferior and left superior in the first (p = 0.000), and the second test (p = 0.003), and between the tests with fixed and non-fixed sensors in the position left superior (p = 0.011). The study confirms that ECG sensors could be used for maximal exercise stress tests in laboratories, especially on a cycle ergometer, and that they present a great potential for future use of ECG sensors during physical activity.

345 Percentage of target heart rate for exercise prescription is lower with beta-blocker compared to placebo

2003 ◽  
Vol 2 (1) ◽  
pp. 66
Author(s):  
M WONISCH ◽  
P HOFMANN ◽  
F FRUHWALD ◽  
W KRAXNER ◽  
R HOEDL ◽  
...  
Keyword(s):  
Heart Rate ◽  
Beta Blocker ◽  
Exercise Prescription ◽  
Target Heart Rate
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