Complications after a tilt table test are not common, but any medical procedure involves risk and potential complications. Complications may become serious in some cases. Complications can develop during the procedure or recovery. Risks and potential complications of tilt table test include: Changes in blood pressure Dizziness Fainting Headache Heart palpitations Nausea Reducing your risk of complications You can reduce the risk of certain complications by: Following activity, exercise and lifestyle restrictions and recommendations Following instructions after the procedure exactly Informing your doctor if you are nursing or if there is any possibility of pregnancy Keeping all scheduled appointments Notifying your doctor immediately of any concerns, such as dizziness, fainting, or new symptoms Taking your medications exactly as directed Telling all members of your care team if you have any allergies