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129 Possible Causes for Decreased Oxygen Saturation, Sinus Bradycardia

  • Low Cardiac Output

    […] to a decrease in arterial oxygen saturation to life-threatening levels.[] , a prolonged PR interval or bundle branch block may be suffering from sick sinus syndrome or intermittent atrioventricular block, both of which can result in bradycardia,[] Six hours after calcium initiation, A-V oxygen saturation difference decreased by 7.4 % (32.6 2.1 to 25.2 2.0 %, p 0.001), rSO2 increased by 5.5 % (63.1 vs 68.6 %, p 0.001[]

  • Obstructive Sleep Apnea

    bradycardia and atrioventricular block, representing in part the diving reflex response to apnea and hypoxia. 144 These bradyarrhythmias occur even in the absence of any[] […] in oxygen saturation.[] bradycardia.[]

  • Cerebral Edema

    oxygen saturation.[] […] in PaO 2 , higher altitudes also trigger a greater decrease in oxygen saturation, thus putting the body in further jeopardy.[] […] neurologic status (restlessness, irritability, increased drowsiness, incontinence), cranial nerve palsies or other specific neurologic signs, increasing blood pressure, decreased[]

  • NADH Cytochrome B5 Reductase Deficiency

    Bradycardia (see Sinus Bradycardia , [[Sinus Bradycardia]]) Ventricular Tachycardia (VT) (see Ventricular Tachycardia , [[Ventricular Tachycardia]]) Shock (see Hypotension[] […] capacity of hemoglobin; Decreased hemoglobin oxygen saturation; Anemia (in some); Reticulocytosis (in some) LABORATORY ABNORMALITIES: Methemoglobinemia MISCELLANEOUS: Onset[] […] cytochrome b5R deficiency Influence of Anemia : the clinical symptoms of methemoglobinemia are exacerbated in the presence of anemia Cardiovascular Manifestations Arrhythmias Sinus[]

  • Central Sleep Apnea

    Another study demonstrated changes in sleep architecture and minor decreases in mean oxygen saturations following administration of oral baclofen, but limited effects on sleep-disordered[] In the three presented cases, marked sinus bradycardia or AV block was followed by the simultaneous occurrence of abrupt acceleration of heart rate and the appearance of rapid[] One study demonstrated a reduction in AHI of approximately 60% in patients who received pacemakers for symptomatic sinus bradycardia. [38] Obstructive apneas fell from 6 to[]

  • High Altitude Cerebral Edema

    […] in PaO 2 , higher altitudes also trigger a greater decrease in oxygen saturation, thus putting the body in further jeopardy.[] saturation decreases.[] •High altitude, 2440 to 4270 m (8000 to 14,000 ft) decreased arterial oxygen saturation (SaO2) marked hypoxemia may occur during exercise and sleep •Very high altitude, 4270[]

  • Sleep Apnea Syndrome

    For a 4% decrease in oxygen saturation, the associated OR for worsening glucose tolerance was 1.99 (95% CI: 1.11-3.56) after adjusting for percent body fat, BMI, and AHI.[] In their first paper, 17 which involved a study of 15 patients with SAHS, these authors observed episodes of severe sinus bradycardia and even sinus arrests during the polysomnograph[] The apneic spells can cause a decrease in the arterial oxygen saturation and a rise in the carbon dioxide saturation during sleep.[]

  • Cardiac Arrest

    Preoperative electrocardiogram revealed sinus bradycardia (54 beats/min) and a left anterior fascicular block.[] Benson et al. 206 discuss sinus bradycardia due to a (sodium) channelopathy.[] Most commonly, these include sinus bradycardia or pauses during hypopneic episodes.[]

  • Physostigmine

    ‘Compared with placebo, an infusion of physostigmine produced a 21% decrease in apnea-hypopnea index and a 23% increase in the minimum level of oxygen saturation.’[] ., seizures, bronchospasm, bradycardia, asystole); many clinicians advise to reserve use for treatment of severe or life-threatening symptoms (e.g., extensive delirium or[] […] agitation, hallucinations, hyperthermia, severe sinus or supraventricular tachycardia, seizures) in patients who fail to respond to alternative therapy. 139 140 141 142 143[]

  • Bradyarrhythmia

    What Causes Sinus Bradycardia/Bradyarrhythmia?[] Bradyarrhythmia occurs predominantly during REM sleep and occurred independently from decrease in oxygen saturation; a threshold value as an upper limit could not be found[] Only in two episodes were oxygen saturation levels below 85%. Figure 1 Note the development of non-sinus atrial rhythm during the episode of bradycardia.[]

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