1. Aim: To study the effect of chronic hypoxic hypercapnia on expression of COX-2 mRNA in pulmonary arterioles.

2. Objective: To identify the correlated factors of chronic hypercapnia in patients with obstructive sleep apnea-hypopnea syndrome.

3. Severe hypoxemia, hypercapnia, and metabolic acidosis with symptoms of target organ or tissue hypoxia may ensue if prompt therapy is not instituted.

4. It also describes feasibility of permissive hypercapnia ventilation and top limit of carbonemia . It emphasises that hypercapnia is not the final goal seeked by ventilation.

5. Objective To study the effects of permissive hypercapnia (PHC) on pulmonary mechanics and hemodynamics in sheep with acute lung injury (ALI).

6. An increase in ventilation during hypoxia and hypercapnia is a useful clinical sign and also a homeostatic response.

7. Finally, it is important to recognize that the ventilatory response to hypercapnia and hypoxia is blunted in the elderly patient.

8. The attack of pulmonary heart disease was caused by respiratory tract infection. And that resulted in and exacerbated the hypoxemia and hypercapnia which caused the injury of organs.

9. Results Both types of operation procedures were carried out successfully with neither recurrent laryngeal nerve nor parathyroid injury, and no hypercapnia and subcutaneous emphysema was happened.

10. Methods We treated 9 neonates who suffered respiratory failure with Bear 750-PSV ventilator in which we used the new method of low volume and permissive hypercapnia ventilation.

11. Injection of ohmefentanyl into femoral vein had no effect on hypoxia induced ventilatory response, but inhibited the ventilatory response to hypercapnia significantly.

12. Conclusion Continuous mechanical ventilation was not required for the IMS patients with simple light and moderate hypercapnia when weaning from mechanical ventilation.

13. AIM:To investigate the effect of puerarin on pulmonary vessel collagen metabolism in pulmonary hypertension rats induced by chronic hypoxia and hypercapnia.

14. Objective:To observe the effects of spironolactone on right ventricular myocardial collagen in rats chronically exposed to hypoxia hypercapnia and to investigate the significance of aldosterone.

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15. Conclusion The expression of TXS gene in bronchi was induced by chronic hypoxia and hypercapnia.

16. Whereas initially arterial oxygenation may be normal and slight hypocapnia may be present, worsening obstruction and tiring patients may exemplify arterial hypoxemia and hypercapnia.

17. Using this model, the responses of circulatory and respiratory systems under hypoxia and hypercapnia are discussed.

18. Conclusions Seawater immersion after open abdominal wound can result in anoxemia, hypercapnia and acidosis.