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Query: UMLS:C0028754 (obesity)
 124,988 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A 71-year-old man was noted to habitually snore loudly at night and have a predisposition to somnolence during the daytime. While dozing during the day, he developed cardiac arrest at the time when snoring stopped, and was resuscitated. By means of a respiration monitor, he was diagnosed as having sleep apnea syndrome (SAS) with a combination of obstructive, central, and mixed type. However, neither respiratory insufficiency nor cardiac insufficiency was observed, and there were no abnormal findings on laboratory tests and bronchoscopy. SAS complicated by cardiac arrest is usually seen in cases with concomitant symptoms such as excessive obesity, hypertension, arrhythmia, right heart insufficiency, secondary polycythemia, or mental disorder. The present case abruptly developed cardiac arrest in the absence of such symptoms. This case therefore suggests the importance of screening tests using a respiration monitor during sleep in subjects who have a loud snore or a predisposition to somnolence during the daytime. Although treatment with UPPP alone had no noticeable effect, UPPP treatment combined with sleeping in the lateral position was effective in the present case. The efficacy rate of UPPP has been reported to be 50 to 60%. The early establishment of a method for precise evaluation of the site of obstruction as well as criteria for appropriate application of UPPP are urgently required.
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PMID:[A resuscitated case of sleep apnea syndrome with cardiac arrest]. 160 64

Morbid obesity is often associated with severe respiratory insufficiency, commonly known as the pickwickian syndrome. This can be divided into the following two primary breathing disorders which can affect patients alone or in combination: the obstructive sleep apnea syndrome (SAS); and the obesity-hypoventilation syndrome (OHS). Thirty-eight (14 percent) of 263 morbidly obese patients with respiratory insufficiency of obesity underwent gastric surgery for weight reduction. Ten had OHS, nine has SAS, and 19 had both. Of these patients, one died of postoperative complications, one died at five weeks with an inconclusive autopsy, one was lost to follow-up, and the time since surgery was too short (less than three months) in three. A total of 30 patients lost 45 +/- 25 percent (p less than 0.0001) of excess body weight within 3 to 12 months following surgery, when repeat pulmonary studies were done. Most patients continued to lose additional weight until two years, when they had lost 62 +/- 26 percent of excess weight. Nine patients failed initial surgery (gastroplasty); seven of these were successfully converted to gastric bypass. Weight loss was associated with a significant decrease in the percentage of sleep apnea from 44 +/- 15 to 8 +/- 11 (p less than 0.0001). In patients with OHS, the arterial oxygen pressure (PaO2) increased from 53 +/- 9 to 68 +/- 11 mm Hg (p less than 0.0001), and the arterial carbon dioxide tension decreased from 51 +/- 7 to 41 +/- 4 mm Hg (p less than 0.0001). Pulmonary function tests in the patients with OHS revealed significant increases, as a percentage of predicted normal, in the forced vital capacity, forced expiratory volume in one second, expiratory reserve volume, functional residual capacity, and total lung capacity. Secondary polycythemia, defined as a hemoglobin level greater than 16 g/dl associated with a PaO2 less than 60 mm Hg, was noted in 13 of 29 patients with OHS. This fell from 16.9 +/- 1.1 to 14.9 +/- 1.7 g/dl (p less than 0.001) after weight loss and improved pulmonary function.
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PMID:Gastric surgery for respiratory insufficiency of obesity. 372 Mar 90

Patients with obstructive sleep apnea syndrome (OSAS) may have daytime pulmonary hypertension (PH). Transient and sometimes severe elevations of pulmonary arterial pressure during sleep as a result of intermittent upper airway obstruction may lead to daytime PH. We sought to study the factors involved in the development of daytime PH. Right-heart catheterization, pulmonary function tests, and arterial blood gas measurements were done in 25 patients in whom OSAS was diagnosed by whole-night polysomnography. Eight of the patients (32%) had PH, defined by a mean pulmonary arterial (PA) pressure > or = 20 mmHg. For the group as a whole, mean PA pressure was positively and significantly correlated with daytime PaCO2 (r = 0.79), percent of ideal body weight (r = 0.45), and Hb (r = 0.40). Mean PA pressure was negatively and significantly correlated with PaO2 (r = -0.54), FEV 1% (r = -0.52), and %FVC (r = -0.68). In contrast, mean PA pressure was not significantly correlated with apnea index or with sleep desaturation. These data indicate that daytime PH was not directly related to sleep-disordered breathing, but was related to daytime hypoxemia, daytime hypercapnia, obesity, obstructive and restrictive respiratory impairments, and secondary polycythemia.
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PMID:[Daytime pulmonary hypertension in the obstructive sleep apnea syndrome]. 854 78

Several health hazards and social disabilities are associated with obesity. Increased mortality is associated with increased body weight. A high rate of mortality results from heart disease, diabetes mellitus, gallbladder disease, high blood pressure, and cancer. Physiologic cardiovascular changes occur, leading to left ventricular hypertrophy and lipid abnormalities. Hypertension, stroke, and venous stasis are increased. Pulmonary abnormalities include obstructive sleep apnea, which can be associated with secondary polycythemia and right ventricular hypertrophy. Gallstones, gallbladder disease, and accumulation of fat on the liver are significantly increased. Gout and reproductive abnormalities in women are common. Osteoarthritis of the knees and spine occur, although osteoporosis is rare. Risk for endometrial and breast cancer is increased, particularly in the presence of increased central fat. Changes in the skin include stretch marks, acanthosis negricans, hirsutism, intertrigo, and multiple papillomas. Impaired psychosocial function is manifested as social isolation, loss of job mobility, increased employee absenteeism, and economic and social discrimination.
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PMID:Health hazards of obesity. 897 52

We here report a case of a 53-year-old woman requiring pulmonary embolectomy for acute massive pulmonary embolism caused by a huge uterine myoma compressing veins in the pelvis and extreme obesity. She was also diagnosed as having myomatous erythrocytosis syndrome, a rare disease associated with secondary polycythemia. The polycythemia improved after a hysterectomy which was performed after pulmonary embolectomy.
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PMID:Pulmonary embolism with myomatous erythrocytosis syndrome and extreme obesity. 1962 99

To investigate an association between secondary polycythemia and venous thromboembolism (VTE) risk, we performed a case-control study to compare the prevalence of VTE in participants with secondary polycythemia due to chronic obstructive pulmonary disease (COPD; N = 86) to that in age- and sex-matched controls with COPD without secondary polycythemia (N = 86). Although there was a significant difference in mean hematocrit between cases and controls (53.5% vs 43.6%, respectively; P < .005), we identified no difference in the number of total or idiopathic VTE events in the 2 groups. Patients with VTE, however, had a significantly higher body mass index than patients without VTE. Our findings suggest that secondary polycythemia alone may not be a significant risk factor for VTE but that VTE risk in this population may be related to known risk factors such as obesity. The role of phlebotomy for VTE risk reduction secondary polycythemia is therefore questionable.
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PMID:Prevalence of venous thromboembolism in patients with secondary polycythemia. 2300 95

Severe hypertriglyceridemia is a common indication for the need of plasma exchange in treatment of hypertriglyceridemic-induced pancreatitis when normal therapies fail to garner a response. Application of plasmapheresis to prevent complication of hypertriglyceridemia is limited because of its cost and availability. We present a case of a 44-year-old man with metabolic syndrome and a medical history of secondary polycythemia in obesity hypoventilation syndrome, whose laboratory tests revealed a triglycerides value of 3965 mg/dL. To prevent the complication of pancreatitis due to hypertriglyceridemia, we performed plasma exchange 3 times when conventional treatments did not sufficiently reduce the high level of triglycerides. A review of the current available literature was therefore conducted to provide an overview of the present data on apheretic treatment for patients with severe hypertriglyceridemia. Several case reports and case series have used plasmapheresis in acute treatment of hypertriglyceridemia pancreatitis related. In our case, the choice of plasmapheresis was applied in prevention of possible complications of hypertriglyceridemia.
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PMID:Plasmapheresis for Preventing Complication of Hypertriglyceridemia: A Case Report and Review of Literature. 2528 71

The childhood obesity epidemic involves unusual and underrecognized complications associated with this clinical and public health problem. Obesity hypoventilation syndrome (OHS) is defined as the triad of obesity, daytime hypoventilation, and sleep-disordered breathing in the absence of an alternative neuromuscular, mechanical or metabolic explanation for hypoventilation. We herewith report a 12-year-old boy who was diagnosed with OHS. The patient improved with phlebotomy and bi-level positive airway pressure. To the best of our knowledge, this is the first reported case of secondary polycythemia due to OHS requiring therapeutic phlebotomy.
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PMID:Obesity hypoventilation syndrome in a 12-year-old child requiring therapeutic phlebotomy: case report and review of the literature. 2552 94

Bardet-Biedl syndrome (BBS) is a rare congenital ciliopathy characterised by rod-cone dystrophy, postaxial polydactyly, central obesity, mental retardation, hypogonadism and renal dysfunction. A 45-year-old Indian man presented with New York Heart Association class 2 dyspnoea of 3 months duration. He was blind since childhood. He was obese, cyanosed, and had clubbing and polydactyly. Systemic examination revealed presence of wide and fixed split second heart sound with systolic murmur in the left parasternal area. Work up unmasked the presence of secondary polycythaemia, atypical retinitis pigmentosa and partial atrioventricular defect. He was diagnosed to have BBS based on clinical and radiological features. This case is interesting for its rarity and also for the peculiarity of its cardiovascular association. Polydactyly with a suspicious clinical background is the clue and by itself warrants the clinician to search for occult anomalies. Clinicians must be aware of this syndrome, for which an early diagnosis and a multidisciplinary approach will significantly improve mortality and morbidity in patients.
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PMID:Bardet-Biedl syndrome: multiple fingers with multiple defects! 2661 81