Abstract：
:The incidence and nature of cardiac arrhythmias during static apnea were studied by monitoring the electrocardiogram (ECG) and oxygen saturation (SaO(2)) of 16 recreational breath-hold divers. All subjects completed a maximal apnea with a mean (+/-SD) breath-hold duration of 281 (+/-73) s without clinical complications. Both heart rate (HR) and SaO(2) decreased significantly with breath-hold duration. The decline in SaO(2) was inversely related to the decline in HR (r = -0.55, P < 0.05). Cardiac arrhythmias (supraventricular and ventricular premature complexes, right bundle branch block) occurred in 12/16 (77%) subjects and were related to breath-hold duration. Subjects with atrial premature complexes (n = 9) had a reduced BMI (P = 0.016) and a higher decline of the terminal SaO(2) (P = 0.01). In conclusion, ectopic arrhythmias were common during maximal static apneas for training purposes. The results indicate that the occurrence of ectopic beats is associated with individual factors such as the tolerable SaO(2) decrease.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Hansel J,Solleder I,Gfroerer W,Muth CM,Paulat K,Simon P,Heitkamp HC,Niess A,Tetzlaff Kdoi
10.1007/s00421-008-0945-xsubject
Has Abstractpub_date
2009-03-01 00:00:00pages
673-8issue
5eissn
1439-6319issn
1439-6327journal_volume
105pub_type
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