These initials refer to the doctor's credentials â they indicate the type of medical school the doctor attended and the licensing exam they took to become a doctor. MD stands for Doctor of Medicine, and is the most common type of degree earned by doctors who practice medicine in the United States.
Anxiety is often manifested at various times during cancer screening, diagnosis, treatment, or recurrence. For patients undergoing cancer treatment, anxiety can also heighten the expectancy of pain,[10-12] other symptoms of distress, and sleep disturbances and can be a major factor in anticipatory nausea and vomiting.
The indices commonly used to assess sleep disordered breathing (SDB) are the apnea-hypopnea index (AHI) and the respiratory disturbance index (RDI). The AHI is defined as the average number of episodes of apnea and hypopnea per hour. The RDI is defined as the average number of respiratory disturbances (obstructive apneas, hypopneas, and respiratory eventârelated arousals [RERAs]) per hour.