Cardiac irritability during sleep and dreaming

Rosenblatt, Gerald; Hartmann, Ernest; Zwilling, George

doi:10.1016/0022-3999(73)90013-5

Cited by 41 publications

(7 citation statements)

References 7 publications

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“…They have been associated with small cyclic decreases in melatonin levels and with cardiac arrhythmias in heart patients (Rosenblatt et al 1973). The rebound of melatonin suppression is less likely during the later hours of the local night because the noradrenalin fibers that stimulate the synthesis of this indoleamine decrease their activity.…”

Section: Discussionmentioning

confidence: 99%

“…The rapid eye movements (REM) or dream periods, which are considered as periods of microseizure activity (Stevens 1982), have been associated with transient decreases in circulating melatonin concentrations (Foley et al 1986) in healthy volunteers. The highest incidence of premature ventricular beats (PVB) has also occurred during REM sleep between 0200 and 0600 hours in patients with known cardiac anomalies (Rosenblatt et al 1973). It may be relevant that "temporal lobe epilepsy" was once called "sleep epilepsy" because of its nocturnal .predilection; Spratling's (1904) hourly data for more than 100 000 convulsions have clearly demonstrated a peak incidence between 0200 and 0600 hours local time.…”

Section: Ma Persinger (~) • C Psychmentioning

confidence: 98%

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Sudden unexpected death in epileptics following sudden, intense, increases in geomagnetic activity: Prevalence of effect and potential mechanisms

Persinger

Psych

1995

Int J Biometeorol

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Abrupt, intense increases in global geomagnetic activity during the local night may precipitate a significant proportion of sudden unexpected (or unexplained) deaths (SUD) in epileptics. Over a 2-year period SUD in healthy chronic epileptic rats occurred when the average daily geomagnetic activity exceeded 50 nT (nanoTesla) and suddenly began during local night. Other experiments demonstrated that epileptic rats displayed more spontaneous seizures per night if there had been sudden increases in geomagnetic activity. Analyses of previously published data indicated that the number of SUDs/month in a population of human epileptics was positively associated with the number of days/month when the average geomagnetic activity exceeded 50 nT. The results support the hypothesis that suppression of the nocturnal concentrations of the endogenous anticonvulsant melatonin by sudden increases in geomagnetic activity may encourage fatal cardiac arrhythmias by uncoupling the insular/amygdaloid-paraventricular hypothalamic-solitary nucleus pathways.

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Section: Discussionmentioning

confidence: 99%

Section: Ma Persinger (~) • C Psychmentioning

confidence: 98%

Sudden unexpected death in epileptics following sudden, intense, increases in geomagnetic activity: Prevalence of effect and potential mechanisms

Persinger

Psych

1995

Int J Biometeorol

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“…Conversely, a number of authors claim that sleep facilitates ventricular arrhythmias [24,42,43]. When sleep was monitored electroencephalographically, arrhythmias were most facilitated in REM sleep during the second half of the night [43] or in the transition from wakefulness to light sleep [24,48].…”

Section: Ventricular Arrhythmiasmentioning

confidence: 99%

“…When sleep was monitored electroencephalographically, arrhythmias were most facilitated in REM sleep during the second half of the night [43] or in the transition from wakefulness to light sleep [24,48]. Other authors "failed to note any significant correlation between VPBs and different stages of the sleep-wake cycle or its transition periods [33,34,38,48].…”

Section: Ventricular Arrhythmiasmentioning

confidence: 99%

Cardiac arrhythmias during sleep

Coccagna

2000

Somnologie

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Sleep SummaryDifferent types of cardiac arrhythmias may arise in healthy subjects during sleep. Whereas bradyarrhythmias (severe sinus bradycardia, sinus arrest, first and second degree A-V blocks) predominate in the young, elderly subjects more commonly present supraventricular and ventricular ectopic beats and tachyarrhythmias (supraventricular paroxysmal tachycardia, atrial flutter, etc.). A rare potentially life-threatening syndrome, characterised by sinus arrests accompanied by vagal overactivity, has been described in young healthy adults during REM sleep. A sudden death during sleep in apparent healthy Southeast Asian immigrants in the U.S., has been described, may be related to ventricular fibrillation. The frequency of episodes of paroxysmal supraventricular tachycardia appears to follow a circadian rhythm, presenting a minimum peak between 4 and 6 a. m. and two maximal peaks in the morning and afternoon. In contrast, the likelihood for development of an episode of paroxysmal atrial fibrillation (PAF) is the same in wakefulness, slow sleep and REM sleep. Power spectral analysis of heart rate variability has established that PAF episodes are always preceded by a shift in the sympathovagal balance towards the sympathetic limb. The influence of sleep on ventricular arrhythmias (ventricular premature beats (VPB) and ventricular tachycardia (VT)) is more controversial. Most studies show that sleep exerts an inhibitory effect on ventricular arrhythmias with a possible circadian trend (the lowest incidence occurring in the early morning hours). Our polygraphic studies failed to disclose any effect of sleep on ventricular arrhythmias. Obstructive sleep apnea syndrome (OSAS) is one of the most common causes of cardiac arrhythmias during sleep. Of these, the most frequent is brady-tachyarrhythmia. First and second degree atrioventral blocks, severe bradycardia and sinus arrests lasting over 2.5 s. (but also more than 10 s.) are also common. Even though these arrhythmias are severe, it has yet to be established whether they are a direct cause of sudden death in OSAS patients.In conclusion, even though many types of arrhythmias may arise in sleep, there is no evidence that sleep is a determinant factor. Some arrhythmias with a minimal incidence in the early hours of the morning appear to be more affected by a circadian rhythm, which are at least partly sleep-dependent. The only arrhythmias truly linked to sleep are sinus arrests in REM sleep and arrhythmias linked to obstructive sleep apneas.Keywords A-V heart blocks -heart rate variability -obstructive sleep apnea -paroxysmal atrial fibrillation -paroxysmal supraventricular tachycardia -sinus bradycardiaventricular ectopic beats -sinus arrest.

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“…Cardiac arrhythmias and sleep Rosenblatt et al,(53) reported increased ventricular premature beats (VPBs) associated with the REM stage in 30 nights of records from 10 cardiac patients, but Smith et al, (60) found no significant differences between waking and sleeping in coronary patients. A tendency for VPBs to occur more commonly during the wake-sleep transitions than during sleep transitions (NREM-REM) was noted, but did not attain significance.…”

Section: Cardiorespiratory Function I N Normal Sleepmentioning

confidence: 99%

Sleep Disorders in Relation to Coronary Heart Disease

Partinen

Putkonen

Kaprio

et al. 1982

Journal of Internal Medicine

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ABSTRACT. In a cross–sectional study of 5419 Finnish adult men, a higher prevalence of diagnosed myocardial infarction was found among those who slept more than 9 hours, whilst those sleeping less than 6 hours per night had more symptomatic coronary heart disease (CHD). This relationship held after controlling hy multivariate analysis for age, sleep quality, use of sleeping pills and tranquillizers, smoking, alcohol use, Type A score, neuroticism, use of cardiovascular drugs and history of hypertension. The cardiovascular physiology and pathophysiology of sleep is reviewed and the relationship of some specific sleep disorders to CHD is discussed.

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Cardiac irritability during sleep and dreaming

Cited by 41 publications

References 7 publications

Sudden unexpected death in epileptics following sudden, intense, increases in geomagnetic activity: Prevalence of effect and potential mechanisms

Sudden unexpected death in epileptics following sudden, intense, increases in geomagnetic activity: Prevalence of effect and potential mechanisms

Cardiac arrhythmias during sleep

Sleep Disorders in Relation to Coronary Heart Disease

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