scholarly journals Obstructive sleep apnea syndrome

2009 ◽  
Vol 6 (1) ◽  
pp. 32-41
Author(s):  
Aleksandr Yur'evich Litvin ◽  
Irina Evgen'evna Chazova ◽  
A Y Litvin ◽  
I E Chazova

The paper describes the major mechanisms of occurrence of obstructive sleep apnea syndrome (OSAS). Large populationbased randomized studies in this area show the importance and prevalence of obstructive sleep respiratory disorders and provide evidence for their clinical significance in the practice of a therapist and cardiologist. Multiple references demonstrate the specific features of an association of OSAS with cardiovascular diseases, as well as major treatment approaches and methods at the present stage are given. Key words: obstructive sleep apnea syndrome, pathogenesis, epidemiology, diagnosis, clinical picture, treatment, cardiovascular diseases

Author(s):  
A. L. Kalinkin

The obstructive sleep apnea syndrome (OSAS) is a risk factor for cardiovascular diseases The results of epidemiological, observational, and experimental studies support the fact that OSAS is of considerable importance in the development of arterial hypertension via chronic sympathetic activation and sleep-induced neurohumoral changes OSAS is of prime importance in the development of refractory AH CPAP therapy not only eliminates sleep-induced obstructive respiratory impairments, but frequently lowers blood pressure in hypertensive patients, and improves the prognosis of cardiovascular diseases


2011 ◽  
Vol 37 (03) ◽  
pp. 280-297 ◽  
Author(s):  
Cristiano Fava ◽  
Martina Montagnana ◽  
Emmanuel Favaloro ◽  
Gian Guidi ◽  
Giuseppe Lippi

2019 ◽  
Vol 26 (4) ◽  
Author(s):  
Hasan Ölmez ◽  
Nurten Arslan Işık

Obstructıve sleep apnea syndrome is a clinical syndrome characterized by recurrent partial or total obstruction of the upper respiratory tract. The main symptoms are snoring, excessive daytime sleepiness and witnessed apnea. It is a disease that affects 3% to 7% of the middle-aged population. Studies and meta-analyzes have shown that cardiovascular diseases are more common in patients with obstructıve sleep apnea syndrome. Comorbid conditions such as obesity, metabolic syndrome and smoking are higher in obstructıve sleep apnea syndrome patients than in the general population. In addition, hypoxia-reperfusion injury due to intermittent oxygen desaturation occurring in obstructıve sleep apnea syndrome patients, endothelial dysfunction, increased sympathetic system activity, platelet activation, monocyte increase, which play the main role in arteriosclerosis, decreased and increased low-density lipoprotein cholesterol may also be the reason for the frequent occurrence of cardiovascular diseases. The development of cardiovascular disease in obstructıve sleep apnea syndrome patients is an important cause of morbidity and mortality. Evaluating white blood cell neutrophil/lymphocyte ratio, platelet/lymphocyte ratio, lymphocyte/monocyte ratio, hematocrit, platelet distribution width, red cell distribution width, C-reactive protein, and monocyte/high-density lipoprotein cholesterol ratio in the follow-up of obstructıve sleep apnea syndrome patients may be helpful in predicting the development of cardiovascular diseases. Whether obstructıve sleep apnea syndrome patients have metabolic syndrome or smoking should be questioned. Obstructıve sleep apnea syndrome, obesity, smoking and depression are increasingly prevalent diseases worldwide, leading to significant mortality and morbidity. Therefore, multicentre studies involving different societies are needed.


2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Shuhui Wang ◽  
Shisheng Li ◽  
Bin Wang ◽  
Jiajia Liu ◽  
Qinglai Tang

Patients with obstructive sleep apnea syndrome (OSAS) showed higher prevalence in cardiovascular diseases due to aberrant hypoxia and oxidative stress. However, not all OSAS patients end up with cardiovascular disorders, and identification of novel biomarker will be invaluable for differentiating patients at risk. Here we tested the serum matrix metalloproteinase-9 (MMP-9) levels in 47 untreated OSAS patients and found that the MMP-9 level was positively correlated with severity of OSAS, which was consistent with hypoxia degree and duration. Besides, the MMP-9 level was higher in patients complicated with systematic hypertension (P < 0.001). Furthermore, we selected those OSAS patients without any cardiovascular dysfunction (n=35) and followed up for up to five years. By the end of follow-up, 12 patients had hypertension onset and 3 patients had left ventricular hypertrophy. By analyzing the clinical outcomes with MMP-9 expression, we demonstrated that high serum MMP-9 in OSAS patients was a risk factor for occurrence of cardiovascular diseases. In addition, we cultured the vascular endothelial cells (VEC) from rat aorta in hypoxia condition to investigate whether MMP-9 was elevated due to hypoxia in OSAS patients. Cellular results revealed that the expression, secretion, and activity of MMP-9 were all upregulated by hypoxia and can cleave the beta2-adrenergic receptor (β2AR) on VEC surface. Our results not only determined MMP-9 as a risk factor for cardiovascular diseases in OSAS patients, but also showed the possible involvement of hypoxia-MMP-9-β2AR signaling axis.


2014 ◽  
Vol 155 (18) ◽  
pp. 703-707 ◽  
Author(s):  
Pálma Benedek ◽  
Gabriella Kiss ◽  
Eszter Csábi ◽  
Gábor Katona

Introduction: Treatment of pediatric obstructive sleep apnea syndrome is surgical. The incidence of postoperative respiratory complications in this population is 5–25%. Aim: The aim of the authors was to present the preoperative evaluation and monitoring procedure elaborated in Heim Pál Children Hospital, Budapest. Method: 142 patients were involved in the study. Patient history was obtained and physical examination was performed in all cases. Thereafter, polysomnography was carried out, the severity of the obstructive sleep apnea syndrome was determined, and the patients underwent tonsilloadenotomy. Results: 45 patients with mild, 50 patients with moderate and 47 patients with severe obstructive sleep apnea syndrome were diagnosed. There was no complication in patients with mild disease, while complications were observed in 6 patients in the moderate group and 24 patients in the severe group (desaturation, apnea, stridor, stop breathing) (p<0.000). In patients with severe obstructive sleep apnea syndrome, no significant difference was noted in preoperative apnoea-hypapnea index (p = 0.23) and in nadir oxygen saturation values (p = 0.73) between patients with and without complication. Conclusions: Patients with severe obstructive sleep apnea syndrome should be treated in hospital where pediatric intensive care unit is available. Orv. Hetil., 2014, 155(18), 703–707.


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