Column by Dr. Sanjay Kumar, Gastroenterologist
Chest pain can be a frightening symptom, but not every ache signals a heart attack. Acid reflux and cardiac pain can feel remarkably similar, making it difficult to tell the difference without proper medical evaluation.
When Chest Pain Isn’t Your Heart—or Is It? The GERD-Cardiac Confusion
There is probably no complaint that causes a more frantic rush into an ER—or, perhaps, should—than chest pain. Many who arrive at the hospital believing they are having a myocardial infarction turn out to have something decidedly less lethal, if not less distressing: acid reflux, or gastroesophageal reflux disease (GERD). It should come as no surprise, then, that these two conditions can be alarmingly similar in their symptoms, and distinguishing between them is among the routine tasks of both cardiologists and gastroenterologists.
Why the Confusion Happens
It’s not a coincidence that the two conditions have such overlapping symptoms. The esophagus and the heart are physically close to each other and share some neural pathways. As a result, the nervous system and brain can interpret pain sensations transmitted from either organ as remarkably similar.
A particularly vicious bout of acid reflux can lead to searing pain behind the sternum, a feeling of constriction in the chest, and can even send pain down the arm or toward the jaw—symptoms that can be indistinguishable from those of classic heart disease to anyone without the right history.
This is why chest pain absolutely should not be nonchalantly waved off as “likely acid reflux” without the proper work-up in someone at risk of heart disease. At the same time, the next ache in the chest doesn’t automatically mean you are about to have a heart attack.
The, frankly, unfair truth is that differentiating between these conditions based solely on symptoms is very difficult, if not impossible.
Patterns That Lean One Way or the Other
That said, certain patterns can often sway a clinical assessment one way or the other, even though none is foolproof.
If the discomfort occurs with exercise, or soon after, and resolves with rest, a cardiac cause is more likely. This exercise-related pattern is a known sign of insufficient blood supply to the heart muscle. If the discomfort occurs after a meal, particularly following a large or spicy meal, or is aggravated by reclining or bending over, reflux is more likely, because these positions and circumstances can promote the upward movement of stomach acid.
If the pain is burning, especially if there’s a sour or bitter taste at the back of the throat, it is more likely to reflect GERD. Pain accompanied by shortness of breath, sweating, nausea, or a feeling of pressure, squeezing or crushing in the chest—especially if it radiates to the arm, jaw or back—is always an urgent indication for medical examination of the heart, regardless of whether or not a person has GERD.
This is incredibly important: it’s entirely possible to be experiencing both GERD and a heart problem at the same time. One isn’t an excuse to ignore the other.
Why Ruling Out the Heart Comes First
When you’re using your professional judgment in the clinic, chest pain with no other obvious cause will almost always be investigated starting with the heart—and that order is really important.
We’ll perform an ECG and, if necessary, blood tests and other cardiac investigations to try to rule out a heart problem before we can safely consider whether it might be an upper GI cause. That’s not being overly cautious for caution’s sake. The implications of missing a cardiac event while treating it as reflux are much worse than those of missing reflux while initially treating the symptoms as potentially cardiac.
And that’s how the order of testing has to be. No gastroenterologist feels that this is unnecessarily restrictive.
Then we want to check for GERD as the cause. It might be confirmed based on a response to acid-blocking treatment or through further investigations such as an endoscopy—especially if symptoms happen very regularly and aren’t controlled, or if you’re experiencing difficulty swallowing, unexplained weight loss or persistent vomiting. These are all red flags that warrant a closer look, even if the symptoms would otherwise suggest classic reflux.
Living With the Overlap
If you do indeed have diagnosed, recurring GERD, there are a few things to bear in mind: eating five to six small meals a day instead of two to three large meals; avoiding lying down for two to three hours after a meal; and reducing known triggers such as acidic foods (tomatoes, citrus and pineapple), spicy, fried or very fatty foods, caffeine and carbonated beverages.
Weight loss can be beneficial because extra abdominal fat can increase pressure on the stomach and exacerbate reflux. People whose symptoms are worse when they are in bed may also find that slightly elevating the head of the bed is helpful.
However, honestly, the more useful habit in the long run, in my opinion, isn’t dietary but more about judgment.
Any new chest discomfort—especially any that doesn’t really seem to fit the description of your existing reflux experience—should be treated as new information, rather than simply “must just be my usual reflux again.” Our bodies change, and with age, so does our risk profile. What was reliably GERD five years ago is no guarantee against something else happening today.
The wonderful upside of all of this is that most chest pain is exactly what we expect—heartburn, muscular pain or anxiety, and not cardiac pain.
However, that reassurance is meaningful only if it comes from professional evaluation, not from your own self-diagnosis in the moment.
When in doubt—medical issue first, dietary issue second.
This column reflects general clinical understanding and shouldn’t be used for self-diagnosis. If you’re experiencing chest pain, especially with breathlessness, sweating, or pain radiating to the arm or jaw, seek immediate medical attention.
Dr. Sanjay Kumar is a Senior Director Gastroenterology at Max Super Speciality Hospital, Sector 138, Noida. He can be reached at 9818509547.