Losing control over your body is arguably one of the worst experiences that anyone can have. Even if it’s a brief episode, feeling dizzy or fainting out of nowhere can very easily leave you unsettled and disturbed. At the same time, a lot of people tend to brush these things off as nothing more than a minor occurrence: Maybe you just stood up too quickly, were dehydrated, or simply stressed out too much.
Sometimes, these things may very well explain what happened. But other times, it could be your body’s way of saying that something is not right with it. For instance, certain heart conditions can lead to such episodes. So, what causes us to feel dizzy or faint, and how exactly is our heart involved? Read on as we explore the answer to this question in detail.
What exactly happens when you faint or become dizzy?
While these words are often used interchangeably, being dizzy and fainting are two very different things. Dizziness is a broad term that can refer to many things. For example, you could be light-headed and feel as though you’ll pass out at any moment. Or, you might simply feel unsteady on your feet or experience vertigo. All of these things come under dizziness.
Fainting, on the other hand, is a little more specific – known medically as syncope. This is a situation when the brain temporarily receives less blood than it needs to remain conscious. When this happens, our bodies basically shut down for a brief period until blood flow is restored. You can think of it like this: if you’re receiving just a little less blood to the brain, you may feel dizzy, but once it crosses a certain threshold, you’ll find yourself fainting.
Generally, such an episode lasts only a few seconds or minutes, but the reason it happens can vary widely. This can occur due to dehydration or a drop in blood pressure. But more importantly, the issue can also originate from the heart itself.
How can our heart cause dizziness or fainting?
As established already, the brain needs a steady supply of oxygen-rich blood to function well, and it is our heart’s responsibility to provide that blood with every beat. When something happens to our heart, the brain may not receive enough blood, which can lead to dizziness or fainting.
The most common cause of this issue is arrhythmia, an abnormal heart rhythm. If your heart beats too slowly, too quickly, or irregularly, it is likely to struggle to pump blood through the body. In a similar vein, conditions that narrow or weaken our heart muscles can also reduce their ability to pump blood efficiently.
Physical exertion or sudden changes in posture can also have a similar effect on the organ. There are also situations where your heart will find it difficult to regulate the body’s blood pressure. If the blood pressure drops suddenly, the brain may temporarily receive less blood than it needs, leaving you feeling light-headed or causing you to lose consciousness for a short period.
One thing to note is that dizziness can often stem from less serious causes, such as dehydration, fatigue, or low blood sugar. However, if your dizziness is accompanied by symptoms such as chest pain, heart palpitations, shortness of breath, or unusual fatigue, there is a good chance your heart is the culprit.
Your personal medical history will also influence how seriously these episodes should be taken. People with a family history of different heart issues will obviously need to take these symptoms a lot more seriously than someone without it. But even if you don’t have a history, facing any of these symptoms is still a serious matter – get yourself checked with a good cardiologist in London to determine if the issue really is with the heart or something else.
How do doctors evaluate dizziness and fainting issues?
When you walk into a clinic or hospital for help with these issues, the first step will usually involve a consultation with the doctor. They will ask you questions about your symptoms – when the episodes happened, what you were doing at the time, how long the episode lasted, your general lifestyle, medical history, and family history of heart conditions.
From there, you’ll likely go through a few diagnostic tests to check the heart’s function, starting with an ECG (Electrocardiogram). This test will detect any abnormalities in your heart’s rhythm or whether it has already sustained some damage. Alternatively, you may be strapped with a Holter monitor, which will record your heart’s activity for 24 hours or more to capture irregularities that an ECG may miss.
In some cases, you may also need an echocardiogram, an ultrasound of the heart. It is used to assess the structure of your organs and their valves, looking for any physical abnormalities that may affect blood circulation.
Depending on your symptoms, you may also need to take additional tests to rule out neurological causes, inner ear problems, or metabolic conditions. If you’re visiting a cardiologist, don’t worry, as they’ll most likely give you a referral for these other tests.
When should you seek immediate medical attention?
If you’ve been experiencing those fainting spells repeatedly without any clear signs, you need to get yourself checked for a closer examination of your system. Even if the episodes themselves are minor, repetitions like this may indicate a problem with blood flow. Even fainting during exercises should not be ignored. Our hearts work hardest during periods of intense activity, and if your heart is struggling to meet that demand, you should certainly get it checked.
As mentioned before, dizziness combined with symptoms like chest discomfort, breathlessness, or an irregular heartbeat warrants immediate medical attention. These symptoms can range from irregular blood flow to heart failure. If you are unsure of the severity, just err on the side of caution. It’s better to get an assessment on time than to let a manageable situation become worse.
Take care of yourself and your heart
It’s safe to say that most people around you may have experienced dizziness or fainting at some point in their lives. While it is nothing to be embarrassed about, it is certainly a sign that something in your body needs to change.
Whether it’s dehydration, low blood sugar, a temporary drop in blood pressure or something more severe with your heart, you need to proactively take care of yourself. In other words, you need to recognise the warning signs we’ve discussed today and seek medical advice when necessary. With the right evaluation and care, these seemingly random occurrences will no longer be able to snatch control over your life.
