bradycardia/hypoxia

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Pulse oximeters' reliability in detecting hypoxemia and bradycardia: comparison between a conventional and two new generation oximeters.

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OBJECTIVE Pulse oximeters are increasingly used for patient monitoring; however, they are traditionally very prone to motion artifact. Newly developed instruments have lower false alarm rates. We wanted to know whether this is achieved at the expense of an increased proportion of false negative

Phenytoin-induced cleft palate: evidence for embryonic cardiac bradyarrhythmia due to inhibition of delayed rectifier K+ channels resulting in hypoxia-reoxygenation damage.

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BACKGROUND Phenytoin (PHT) teratogenicity has been related to embryonic arrhythmia due to the capacity of PHT to block I(K) channels pharmacologically, resulting in hypoxia-reoxygenation damage. The aim of this study was to further elucidate the proposed mechanism. METHODS Pregnant CD-1 mice were

Oral versus nasal route for placing feeding tubes: no effect on hypoxemia and bradycardia in infants with apnea of prematurity.

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BACKGROUND Raised upper airway resistance may be involved in apnea of prematurity (AOP). OBJECTIVE To determine the effects of an oral versus a nasal gastric tube on episodes of hypoxemia and bradycardia in infants with AOP. METHODS In a randomized controlled cross-over trial, 32 infants (median

[A Randomized Controlled Trial on the Effect of Earmuffs on Intermittent Hypoxia and Bradycardia in Preterm Infants].

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BACKGROUND Irregular breathing causing hypoxia and bradycardia is a common problem of preterm infants but its pathophysiology is incompletely understood. Agitation provoked by environmental noise may play a role. We wanted to know if earmuffs can at least halve the rate of intermittent hypoxia in

["Loss of breath" as a cause of postoperative hypoxia and bradycardia in children submitted to tonsillectomy].

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OBJECTIVE The "shortness of breath" or "breathing interruption" crisis can be considered a cause of hypoxia in childhood. It is characterized by the presence of a triggering factor followed by weeping and apnea in expiration accompanied by cyanosis or pallor. The sequence of events may include

"Loss of breath" as a cause of postoperative hypoxia and bradycardia in children submitted to tonsillectomy.

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OBJECTIVE the "shortness of breath" or "breathing interruption" crisis can be considered a cause of hypoxia in childhood. It is characterized by the presence of a triggering factor followed by weeping and apnea in expiration accompanied by cyanosis or pallor. The sequence of events may include

Adaptation to periodic high-altitude hypoxia inhibits baroreflex vagal bradycardia in rats.

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A 3-week course of adaptation to high-altitude hypoxia (4500 m above sea level) inhibited baroreflex vagal bradycardia induced by a rapid rise of systemic blood pressure in conscious rats. Bradycardic responses to electrical stimulation of peripheral end of the right vagus nerve and methacholine

Reducing the hypoxemia, bradycardia, and apnea associated with suctioning in low birthweight infants.

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Hypoxemia and bradycardia are major complications associated with suctioning the neonate. Apnea has been reported following caregiving during peak hours of activity in a neonatal intensive care unit (NICU). This study determined the incidence of hypoxemia, bradycardia, and apnea associated with the

Severe fetal supraventricular bradyarrhythmia without fetal hypoxia.

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Cardiac anatomy and rhythm were evaluated in a fetus at 39 weeks' gestation in a pregnant woman referred because of severe fetal bradycardia with a persistent fetal heart rate of 50-60 beats per minute. M-mode echocardiograms revealed supraventricular bradyarrhythmia. Umbilical cord blood analysis

Hypoxia reinforces laryngeal reflex bradycardia in infants.

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The laryngeal chemoreflex involves bradycardia, apnea, swallowing and peripheral vasoconstriction. This reflex was studied in twelve infants, aged 5 days-28 weeks, who had sustained an apparent life-threatening event or were siblings of infants who had died of the sudden infant death syndrome. The

Relations among hypoxemia, sleep stage, and bradyarrhythmia during obstructive sleep apnea.

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BACKGROUND Obesity, apneic hypoxemia, and rapid eye movement (REM) sleep are supposed to be the major causes for bradyarrhythmia in patients with obstructive sleep apnea. The aims of this study were to compare clinical findings and diagnoses in patients with obstructive sleep apnea with and without

Abolition of reflex bradycardia by cardiac vagotomy has no effect on the regulation of oxygen uptake by Atlantic cod in progressive hypoxia.

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The functional significance of chemoreflexive hypoxic bradycardia was explored in Atlantic cod Gadus morhua L. (mean mass approximately 800 g, acclimated to a seawater temperature of 11 degrees C) by investigating responses to progressive hypoxia following section of the cardiac branches of cranial

The teratogenic effect of dofetilide during rat limb development and association with drug-induced bradycardia and hypoxia in the embryo.

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BACKGROUND Dofetilide is an antiarrhythmic drug that blocks the cardiac repolarizing current IKr ((IKr, rapid component of the delayed rectifying potassium current). Previous studies have shown that (a) IKr is essential for normal cardiac function of the embryonic heart and (b) dofetilide is

Central Anticholinergic Syndrome due to Hypoxia-Induced Bradycardia in a Child with Difficult Intubation Undergoing Complete Dental Restoration: A Case Report.

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Central anticholinergic syndrome (CAS) following general anesthesia (GA) is a well known syndrome in children and adults. Many cases of CAS have been previously reported in the literature. However, there are only two reports of post resuscitation CAS after administration of small doses of atropine.

The relationship between bradycardia, apnea, and hypoxemia in preterm infants.

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The pathogenesis of bradycardias in preterm infants is poorly understood. Because their pathogenesis may involve both apnea and hypoxemia, we set out to analyze the proportion of bradycardias that were associated with an apneic pause and/or a fall in arterial oxygen saturation (SaO2), and the

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