Oral mucosa appears blue-purple

The cyanosis refers to the skin or mucous membranes (such as eyelids, oral mucosa) appearing blue-purple or dark red. Acute respiratory failure refers to the patient's original respiratory function is normal, due to some sudden reasons, such as airway obstruction, drowning, drug poisoning, central nervous muscle disorders inhibit breathing, the body is often too late to compensate, if not timely diagnosed and effective control Measures can often be life threatening. Dyspnea, earlobe, lips, oral mucosa, and nails appear bluish-purple, heart rate increases, and blood pressure increases.