Is it normal for elderly people to have blood oxygen levels between 90% and 94%?

　　Blood oxygen, namely blood oxygen saturation, needs to be differentiated between arterial blood oxygen saturation and venous blood oxygen saturation. A blood oxygen saturation level of 90% to 94% in elderly individuals, whether referring to arterial or venous blood oxygen saturation, falls outside the normal range and indicates an abnormal physiological state. If abnormalities are detected, timely medical consultation is recommended. Detailed analysis is as follows:

　　The normal range for arterial blood oxygen saturation is 95% to 98%. If an elderly person's arterial blood oxygen saturation ranges between 90% and 94%, it is below the normal range and typically indicates hypoxia. The elderly individual may experience symptoms such as difficulty breathing, chest tightness, shortness of breath, dizziness, and fatigue. Immediate attention and prompt medical consultation are necessary upon detecting arterial blood oxygen saturation below the normal range.

　　The normal range for venous blood oxygen saturation is 64% to 88%. If an elderly person's venous blood oxygen saturation reaches 90% to 94%, it exceeds the normal values. This condition is relatively rare in actual physiological situations and may suggest circulatory disorders or measurement errors. If elevated venous blood oxygen saturation is observed in elderly individuals, timely medical consultation for further examination and diagnosis is recommended.

　　It is recommended that elderly individuals maintain healthy daily routines, ensure sufficient sleep, improve dietary habits, adjust their physical condition, and safeguard overall health.