The sudden death of Lindsey Graham, 71, from an aortic dissection has brought a rare but often fatal medical condition into sharp focus. An aortic dissection occurs when a tear forms in the inner lining of the aorta, the body's largest artery, which carries oxygenated blood from the heart to the rest of the body.
This tear allows blood to surge between the layers of the aortic wall, separating them. This can obstruct blood flow to vital organs, including the heart, brain, kidneys, and spinal cord, or lead to a rupture of the aorta, which is frequently fatal. Cardiac surgeons have sometimes described the event as an "exploding heart" due to its rapid and catastrophic nature, though the tear occurs in the aorta itself, not the heart.
There are two primary types of aortic dissection: Type A, which affects the ascending aorta closer to the heart, and Type B, which occurs further down in the descending aorta. Type A dissections are generally more dangerous as they can impede blood flow from the heart and increase the risk of rupture. Both types are considered life-threatening emergencies requiring immediate medical intervention.
While rare, affecting approximately 30 in every million people in the U.S. annually, aortic dissections can be deadly. "Aortic dissection isn't one of those things that happens slowly over time," explained Dr. Barbara Hamilton, a cardiac surgeon. "When it happens, it happens very quickly and often without warning. At least half of patients don't make it to the hospital in time to be saved."
Risk Factors
The most significant risk factor for aortic dissection is uncontrolled high blood pressure, which continuously stresses the artery walls. "By far the biggest risk factor is uncontrolled high blood pressure, which places extra force on the artery wall every second of the day, accelerating wear and tear," said Dr. Hamilton. Atherosclerosis, a buildup of fatty plaques in the arteries, was also identified in Graham's case. This condition can narrow and stiffen artery walls, making them less resilient.
Aging contributes to increased risk as the aorta naturally loses elasticity over time. Smoking can also damage blood vessel linings, promote inflammation, and accelerate the breakdown of proteins that maintain arterial strength. "Many patients with high blood pressure and heart disease are not aware they are at risk," stated Dr. Manesh Patel, an interventional cardiologist. "It's often not felt until they have an acute event, when they suffer from chest pain and a heart attack, or when they have an aortic dissection, or a stroke."
Certain inherited connective tissue disorders, such as Marfan syndrome and vascular Ehlers-Danlos syndrome, can also weaken the aortic wall. However, doctors note that some dissections occur without any identifiable underlying risk factors.
Demographically, individuals between 50 and 70 years old, males, and those with a family history of the condition are considered most at risk. Some patients may appear outwardly healthy before experiencing an acute event.
Warning Signs and Symptoms
Dr. Matthew Henn, a cardiac surgeon, described the onset as "very sudden." Patients often report intense, tearing chest pain that may radiate to their back. The sensation has been likened to a stabbing pain. Other symptoms can include pain in the neck or jaw, and feelings of faintness, weakness, or shortness of breath if blood supply to organs like the brain is compromised.
"Once an aortic dissection happens, the best chance for survival is to get the patient to the operating room as soon as possible," Dr. Henn advised. "As soon as someone feels that chest pain, they should call 911. Minutes and hours really count in these cases."
Graham, who had no publicly reported health conditions, had been traveling extensively in the days prior to his death. While long-haul travel itself is not a direct cause, experts suggest that the physical and emotional stress of travel can lead to temporary spikes in blood pressure, potentially straining a weakened aorta. However, there is no specific evidence to suggest this played a role in Graham's case.
Despite the often sudden and severe nature of aortic dissection, awareness of risk factors like high blood pressure and prompt recognition of symptoms are crucial for improving survival rates. High blood pressure, affecting nearly half of U.S. adults, often goes undetected due to its asymptomatic nature until a critical event occurs.