RESUMO
A 3-year-old girl with a history of excessive weight gain from birth presented with obesity, somnolence, and cyanosis, characteristic of the Pickwickian syndrome. Obesity was familial and exogenous without endocrine or neurologic anomaly. Respiratory center sensitivity to carbon dioxide was normal. Excessive somnolence was due to the obesity, which during sleep caused airway obstruction, apnea, and awakening, finally resulting in sleep deprivation. The sleep apneas and the daytime somnolence disappeared with weight reduction, showing that obesity alone had been responsible for the disorder.
Assuntos
Apneia/etiologia , Síndrome de Hipoventilação por Obesidade/complicações , Sono , Apneia/dietoterapia , Pré-Escolar , Feminino , Humanos , Obesidade/complicações , Obesidade/dietoterapia , Obesidade/genética , Síndrome de Hipoventilação por Obesidade/dietoterapiaRESUMO
Periodic apnea and exercise hypoventilation were observed in a 14-year-old boy. Hyperphagia, obesity, serum hyperosmolality without diabetes insipidus or appropriate thirst, and retardation of growth and sexual development indicated a hypothalamic disorder. Neurologic evaluation was normal except for electroencephalographic changes induced by apnea. Pulmonary function tests, resting arterial blood gases in the wakeful state, and ventilatory response to inhaled CO2 were also normal. Acute hypoxemia and respiratory acidosis occurred with apnea during sleep and with insufficient ventilation during exercise. The central origin of sleep apneas was shown by esophageal pressure monitoring. The hypothalamic dysfunction and exercise hypoventilation distinguish this patient from others with obesity and periodic apnea.
