Put these parts of the heart in chrono order of blood flow beginning with blood entering through superior and inferior vena cava... Superior vena cava, Inferior vena cava, right pulmonary veins, right atrium, pulmonary valve, right ventricle, aortic arch, left pulmonary artery, pulmonary trunk, left atrium, circumflex artery, left ventricle.
The first available PPI agent, omeprazole (Prilosec), has been available over the counter without a prescription for the past few years. When omeprazole was first approved, it carried a warning to use for only eight weeks because of concern at the time about an increased risk of stomach cancer.
The risk is highest in people who take high doses of one of these medications or take them for one year or longer. Some people who take omeprazole for a long time may develop weakening of the stomach lining. Talk to your doctor about the risks of taking omeprazole. Omeprazole may cause other side effects.