fibromyalgia: A chronic condition that causes muscle pain and stiffness.
gastroesophageal: Of or related to the stomach and esophagus.
gastroesophageal reflux disease (GERD): A condition where stomach acid leaks into the esophagus, where it damages esophageal tissue and causes heartburn.
heart attack: Damage to heart muscle tissue due to an interruption or reduction in blood supply.
heart failure: A condition where the heart is unable to maintain adequate blood circulation.
heart rate: The number of times a heart beats in a minute.
heartburn: Discomfort due to a spasm in the esophagus, usually due to acid reflux.
hemothorax: Blood in the chest cavity.
heparin: An anticoagulant used to treat blood clots and embolisms.
hiatal hernia: A hernia where part of the stomach pushes through the diaphragm and into the chest.