- Q: Does a normal level of oxygen saturation on pulse oximetry rule out pulmonary embolism?
- A: A normal level of oxygen saturation on pulse oximetry does not rule out pulmonary embolism. However, a rapid pulse is a nonspecific finding that is often, but not always, seen in the presence of thromboembolism.
- Q: Does oral contraceptive use increase the risk for deep venous thrombosis? Does it make a difference how long the woman has been using oral contraceptives?
- A: Oral contraceptives increase the risk for deep venous thrombosis. Depending on the preparation, oral contraceptives can increase the risk of DVTs by a factor of two to five. The greatest risk occurs during the first 6 months of use.