hypercapnia/obesity

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Obesity is associated with decreased lung compliance and hypercapnia during robotic assisted surgery.

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Robotic assisted surgery (RAS) represents a great challenge for anesthesiology due to the increased intraabdomial pressures required for surgical optimal approach. The changes in lung physiology are difficult to predict and require fast decision making in order to prevent altered gas exchange. The

Venovenous extracorporeal membrane oxygenation to treat hypercapnia in a morbidly obese patient.

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Morbid obesity plays an increasingly important role in healthcare. Patients who are severely obese often suffer from a range of medical problems. One problem is obesity-related hypoventilation syndrome with its resulting hypercapnia. We report a case of a 33-year-old female patient who was in an

Ventilatory responses to hypercapnia during wakefulness and sleep in obese adolescents with and without obstructive sleep apnea syndrome.

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OBJECTIVE Abnormal ventilatory drive may contribute to the pathophysiology of the childhood obstructive sleep apnea syndrome (OSAS). Concomitant with the obesity epidemic, more adolescents are developing OSAS. However, few studies have specifically evaluated the obese adolescent group. The authors

Prevalence and mechanisms of diurnal hypercapnia in a sample of morbidly obese subjects with obstructive sleep apnoea.

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It is well known that obstructive sleep apnoea is especially frequent in the morbidly obese. In these subjects diurnal chronic hypercapnia, whose mechanism is still debated, may be present. Our study was performed to evaluate the prevalence and the mechanism of diurnal hypercapnia in the morbidly

[Mechanisms of diurnal hypercapnia in sleep apnea syndromes associated with morbid obesity].

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OBJECTIVE The prevalence and mechanisms of diurnal hypercapnia in subjects with sleep apnea syndrome are not well known, particularly in the morbidly obese. METHODS We studied a group of 24 subjects with sleep apnea syndrome and morbid obesity defined as a body mass index greater than 40 kg/m2 and

Hypercapnia Response in Patients with Obesity-Hypoventilation Syndrome Treated with Non-Invasive Ventilation at Home.

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BACKGROUND Respiratory center (RC) dysfunction has been implicated in the pathogenesis of obesity-hypoventilation syndrome (OHS), and often requires treatment with home non-invasive ventilation (NIV). Our objective was to measure the effect of NIV on RC function in patients with OHS, and the factors

Ventilatory responses to hypercapnia and hypoxia in relatives of patients with the obesity hypoventilation syndrome.

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BACKGROUND It is unclear why some morbidly obese individuals have waking alveolar hypoventilation while others with similar obesity do not. Some evidence suggests that patients with the obesity hypoventilation syndrome (OHS) may have a measurable premorbid impairment of ventilatory

Supine awake oximetry as a screening tool for daytime hypercapnia in super-obese patients.

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BACKGROUND Evidence-based screening tools are required for detection of daytime hypercapnia in high-risk patient populations. OBJECTIVE To determine the validity of supine awake oximetry as a test for daytime hypercapnia and severe sleep disordered breathing (SDB) in super-obese

Hypercapnia impaired cognitive and memory functions in obese patients with obstructive sleep apnoea.

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Obstructive sleep apnoea (OSA) is a sleep disorder involving repeated nocturnal desaturation and sleep fragmentation. OSA can result in decreased daytime alertness and neurocognitive dysfunction. Hypercapnia status is also related to neurocognitive dysfunction in patients with pulmonary diseases. We

Is a raised bicarbonate, without hypercapnia, part of the physiologic spectrum of obesity-related hypoventilation?

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BACKGROUND Obesity hypoventilation syndrome (OHS) conventionally includes awake hypercapnia, but an isolated raised bicarbonate, even in the absence of awake hypercapnia, may represent evidence of "early" OHS. We investigated whether such individuals exhibit certain features characteristic of

Ventilatory responses to hypercapnia and hypoxia in patients with eucapnic morbid obesity before and after weight loss.

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1. To examine the relationship between eucapnic morbid obesity and ventilatory responsiveness to chemical stimuli, we measured hypercapnic and hypoxic ventilatory responses in 29 patients (26 women, three men) before and 3-6 months after gastroplasty. No subject demonstrated resting awake

Evaluation of hyperoxia-induced hypercapnia in obese patients after cardiac surgery: a randomized crossover comparison of conservative and liberal oxygen administration.

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PURPOSE

Recent studies on patients with stable obesity-hypoventilation syndrome have raised concerns about hyperoxia-induced hypercapnia in this population. This study aimed to evaluate whether a higher oxygen saturation target would increase arterial partial pressure of carbon

Blunted cerebral vascular responsiveness to hypercapnia in obese individuals.

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What is the central question of this study? Is there a difference in the cerebral vascular response to rebreathing-induced hypercapnia between obese and lean individuals? What is the main finding and its importance? The main finding is that obese individuals have an attenuated increase in cerebral

Obesity Hypoventilation Syndrome: Early Detection of Nocturnal-Only Hypercapnia in an Obese Population.

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OBJECTIVE Hypoventilation in obesity is now divided into five stages; stage 0 (pure obstructive sleep apnea; OSA), stages I/II (obesity-related sleep hypoventilation; ORSH) and stages III/IV (awake hypercapnia, obesity hypoventilation syndrome; OHS). Hypercapnia during the day may be preceded by

Respiratory determinants of diurnal hypercapnia in obesity hypoventilation syndrome. What does weight have to do with it?

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BACKGROUND Among morbidly obese individuals, obstructive sleep apnea (OSA) is highly prevalent, with up to 20% suffering from hypoventilation syndrome. An increased diurnal PaCO2, the signature of obesity hypoventilation syndrome (OHS), implies diminished global ventilation, hence the term

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