An oxygen saturation of less than 95% is generally defined as an oxygen saturation level of less than 95%, which may lead to symptoms of chest tightness, but the specific clinical symptoms and the severity of the condition are closely related to the specific cause of the disease and the urgency of the onset of the disease.
Oxygen saturation refers to the ratio of oxygen-bound hemoglobin to oxygen-bound hemoglobin, generally expressed as a percentage; oxygen saturation below 95% suggests the presence of hypoxia, and the patient will often stimulate the respiratory center due to hypoxia, resulting in chest tightness.
If the oxygen saturation level is slightly lower than 95%, and the onset of the disease is relatively slow, such as chronic hypoxia caused by chronic obstructive pulmonary disease, the patient’s symptoms of chest tightness may be relatively mild, and even have no obvious manifestations when resting, and the symptoms appear only after the activity.
But acute onset of disease, blood oxygen saturation rapidly decreased, chest tightness dyspnea symptoms tend to be more serious, there may even be obvious wheezing dyspnea phenomenon, the condition of the serious may be due to respiratory failure and life-threatening.
Blood oxygen below 95% should seek medical attention in time to clarify the cause of targeted treatment.