Heart rate variability before the occurrence of silent myocardial ischemia during ambulatory monitoring

Goseki, Yoshinari; Matsubara, Tetsu; Takahashi, Naoko; Takeuchi, Tōru; Ibukiyama, Chiharu

doi:10.1016/0002-9149(94)90807-9

Cited by 34 publications

(10 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This pattern is similar to that reported in the general elderly population (Rautaharju et al. , 1995) and in patients with stable coronary artery disease (CAD) (Fox and Mulcahy, 1990); Goseki et al. , 1994) but different from the circadian rhythm of acute coronary events (Patel et al.…”

Section: Discussionsupporting

confidence: 85%

Transient cardiac ischaemia and abnormal variations in systemic blood pressure in unselected primary open angle glaucoma patients

Gherghel

Hosking

Cunliffe

et al. 2010

Ophthalmic and Physiological Optics

View full text Add to dashboard Cite

show abstract

Section: Discussionsupporting

confidence: 85%

Transient cardiac ischaemia and abnormal variations in systemic blood pressure in unselected primary open angle glaucoma patients

Gherghel

Hosking

Cunliffe

et al. 2010

Ophthalmic and Physiological Optics

View full text Add to dashboard Cite

show abstract

“…For the HF power (vagal activity), we observed smaller changes in intervals before and during ischemia especially for the salvo-episode set, while for the sporadic-episode set we observed significant decrease in activity at the beginning of ischemia as compared to the interval immediately prior to ischemia onset during the day interval and for the entire record. The results regarding sympathetic and vagal activities in our study seem in agreement with several previous studies [14,16,17], which also described marked changes in sympathetic and/or vagal activity during the ischemia.…”

Section: Discussionsupporting

confidence: 93%

Diurnal Changes of Heart Rate and Sympathovagal Activity for Temporal Patterns of Transient Ischemic Episodes in 24-Hour Electrocardiograms

Smrdel

Jager

2007

EURASIP J. Adv. Signal Process.

View full text Add to dashboard Cite

We test the hypothesis that different temporal patterns of transient ST segment changes compatible with ischemia (ischemic episodes) are a result of different physiologic mechanisms responsible for ischemia. We tested the hypothesis using records of the Long-Term ST Database. Each record was divided into three intervals of records: morning, day, and night intervals; and was inserted into one of three sets according to the temporal pattern of ischemia: salvo, periodic, and sporadic pattern. We derived timeand frequency-domain parameters of the heart rate time series in selected intervals in the neighborhood of ischemic episodes. We used the adaptive autoregressive method with a recursive least-square algorithm for consistent spectral tracking of heart rate time series and to study frequency-domain sympathovagal behavior during ischemia. The results support the hypothesis that there are at least two distinct populations, which differ according to mechanisms and temporal patterns of ischemia.

show abstract

“…HRV was recently studied in association with various cardiological disorders. Decreased parasympathetic tone has been found after myocardial infarction (Bigger et al 1992) and before onset of myocardial ischaemia (Goseki et al 1994) or ventricular arrhythmias (Huikuri et al 1994). In the present study, the cardiac response to hyperbaric oxygen re¯ected increased parasympathetic tone.…”

Section: Discussionmentioning

confidence: 99%

Heart rate variability in healthy volunteers during normobaric and hyperbaric hyperoxia

Lund

Kentala

Scheinin

et al. 1999

Acta Physiologica Scandinavica

View full text Add to dashboard Cite

Inhaled supranormal partial pressure of oxygen induces bradycardia and peripheral vasoconstriction. The exact mechanism of the decreasing heart rate is not clear, but the autonomic nervous system is partly involved. In the present study the role of the autonomic nervous system in hyperoxic bradycardia was evaluated by using the power spectral analysis of heart rate variability. Ten healthy volunteers participated in four experiments: (i) hyperbaric oxygen treatment (100% oxygen at 2.5 ATA), (ii) hyperbaric air treatment (O2 21% at 2.5 ATA), (iii) oxygen treatment at normal pressure (100% O2, 1 ATA) and (iv) air breathing at normal pressure (21% O2, 1 ATA). During the experiments, ECG was registered and subjected to power spectral analysis. The volunteers rated their perception of temperature, ear discomfort, sweating and excitement on a visual analogue scale. Statistical comparison of the results of the four trials was conducted with a two-way ANOVA for repeated measurements. Heart rate decreased during all interventions, but there were no statistically significant differences between the sessions. High frequency variability of heart rate variability and Hayano's index of HF power increased and LF/HF ratio decreased with increasing partial pressure of oxygen. Our results suggest, that normobaric and hyperbaric hyperoxia increase parasympathetic influence in the regulation of the heart.

show abstract

Heart rate variability before the occurrence of silent myocardial ischemia during ambulatory monitoring

Cited by 34 publications

References 28 publications

Transient cardiac ischaemia and abnormal variations in systemic blood pressure in unselected primary open angle glaucoma patients

Transient cardiac ischaemia and abnormal variations in systemic blood pressure in unselected primary open angle glaucoma patients

Diurnal Changes of Heart Rate and Sympathovagal Activity for Temporal Patterns of Transient Ischemic Episodes in 24-Hour Electrocardiograms

Heart rate variability in healthy volunteers during normobaric and hyperbaric hyperoxia

Contact Info

Product

Resources

About