Some Practical Points About Patent Foramen Ovale Conditions that May Not Be Covered in the Rest of the Book Patent Foramen Ovale Embryology, Anatomy, and Physiology Techniques for Identifying a Patent Foramen Ovale: Transthoracic Echocardiography, Transesophageal Echocardiography, Transcranial Doppler, Right Heart Catheterization Patent Foramen Ovale-Associated Stroke: A Neurologist’s Perspective Migraine Headache and Patent Foramen Ovale: Observational Studies, the Randomized Clinical Trials, and the GORE RELIEF Clinical Study Patent Foramen Ovale and Hypoxemia Patent Foramen Ovale and Acute Mountain Sickness Patent Foramen Ovale and Decompression Illness: The Present and Future Practical Aspects of Patent Foramen Ovale Closure: Ultrasound and Fluoroscopic Guidance A Cardiologist’s Perspective on Patent Foramen Ovale-Associated Conditions Patent Foramen Ovale and Coronary Artery Spasm: A New Patent Foramen Ovale-associated Condition that May Explain the Mechanism of Vasospastic Angina