2009
DOI: 10.1002/eat.20647
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Second‐degree atrioventricular block (Mobitz Type I) in an adolescent with anorexia nervosa: Intrinsic or acquired conduction abnormality

Abstract: Anorexia nervosa (AN) can cause both functional and structural cardiac complications, including a variety of different conduction abnormalities. This is the first case report of symptomatic diurnal second-degree atrioventricular (AV) block (Mobitz Type I) in an adolescent with AN. We present a 12-year-old girl with AN, restrictor sub-type who reported cardiac symptoms during weight gain, at the time of the initial diagnosis of AV block. Second-degree AV block (Mobitz Type I) is discussed as a possible complica… Show more

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Cited by 14 publications
(16 citation statements)
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“…Of note in one of the two reports of junctional escape rhythm, it was extinguished with exercise, despite a prolonged duration of the junctional escape rhythm. Similarly there are rare singular cases of more complex sinoatrial block in anorexia nervosa, as well as paroxysmal supraventricular tachycardia …”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Of note in one of the two reports of junctional escape rhythm, it was extinguished with exercise, despite a prolonged duration of the junctional escape rhythm. Similarly there are rare singular cases of more complex sinoatrial block in anorexia nervosa, as well as paroxysmal supraventricular tachycardia …”
Section: Methodsmentioning
confidence: 99%
“…Similarly there are rare singular cases of more complex sinoatrial block in anorexia nervosa, as well as paroxysmal supraventricular tachycardia. 52 However, it is currently not definitive, which if any of the aforementioned cardiac rhythm abnormalities or of the structural-functional abnormalities found in anorexia nervosa, cause the clearly increased mortality rate associated with anorexia nervosa. This is because at the time of their ultimate demise there is generally no objective rerecorded rhythm data which can be connected with the death.…”
Section: Repolarization and Conduction Abnormalitiesmentioning
confidence: 99%
“…Commonly seen abnormalities are gross electrocardiogram abnormalities, heart rates less than 60 bpm, and orthostatic hypotension with blood pressure change of greater than 20 mm Hg [18]. Rarely, abnormalities of the atrioventricular node can be evident [19] and, along with prolonged QTc interval, confer risk of arrhythmia. Risk factors for prolonged QTc interval in AN that appear to be of the most significant concern are low body mass index and rapid weight loss [20].…”
Section: Vital Signs and Electrocardiogrammentioning
confidence: 99%
“…Through increases in vagal tone, the heart rate, blood pressure, and GI systems all slow down, to create a metabolic hibernation, in order to preserve energy and stay alive . Junctional bradycardia occurs when the vagal tone is so high that the natural pacemaker for the heart becomes suppressed, and a backup pacemaker lower in the heart takes over . In severe malnutrition, the vagal tone is so high that patients may be profoundly bradycardic around the clock.…”
Section: Casesmentioning
confidence: 99%
“…[64][65][66] Junctional bradycardia occurs when the vagal tone is so high that the natural pacemaker for the heart becomes suppressed, and a backup pacemaker lower in the heart takes over. [67][68][69] In severe malnutrition, the vagal tone is so high that patients may be profoundly bradycardic around the clock. However, relatively early in refeeding, the vagal tone begins to lessen as the metabolism starts to speed up again.…”
Section: Diagnosis Patient History and Objective Verification (As Nementioning
confidence: 99%