What Causes Heart Palpitations?-"Φτερούγισμα" στην καρδιά: Τι το προκαλεί ;

What Causes Heart Palpitations?-"Φτερούγισμα" στην καρδιά: Τι το προκαλεί ;

 Έχετε αισθανθεί ποτέ την καρδιά σας να φτερουγίζει; Το σύμπτωμα αυτό περιγράφεται από τους γιατρούς με τον όρο «αίσθημα παλμών» και επί της ουσίας προκύπτει, όταν ο καρδιακός παλμός γίνεται αισθητός.

Μπορεί να νιώθετε την καρδιά σας να χτυπάει γρήγορα ή άρρυθμα ή να νιώθετε ότι χάνετε κάποιους χτύπους. Πολλοί, μάλιστα, το περιγράφουν ως φτερούγισμα, το οποίο το αισθάνονται στο στήθος και λαιμό.

Πότε όμως θα πρέπει να ανησυχήσετε και τι πρέπει να κάνετε;
Σύμφωνα με τους ειδικούς, το «φτερούγισμα» αποτελεί συχνό σύμπτωμα σε μεγάλο αριθμό ατόμων και δεν θα πρέπει εξαρχής να συνδέεται με την αρρυθμία, παρά το γεγονός ωστόσο ότι και οι δύο καταστάσεις σχετίζονται μεταξύ τους.
Αυτό σημαίνει ότι, αν κάποιος έχει αίσθημα παλμών, αλλά η καρδιά του έχει φυσιολογικό ρυθμό, δεν συντρέχει κανένας απολύτως λόγος ανησυχίας.

Το αίσθημα παλμών με φυσιολογικό ρυθμό μπορεί να οφείλεται σε:

- Άγχος, κρίσεις πανικού, φόβο
- Καφεΐνη
- Κάπνισμα
- Άσκηση
- Πυρετό
- Κοκαΐνη και άλλα ναρκωτικά
Αντίθετα, όταν το σύμπτωμα της αίσθησης παλμών συνοδεύεται από αρρυθμία, τότε είναι ανησυχητικό και απαιτεί διερεύνηση, καθώς μπορεί να συνυπάρχει με βαλβιδοπάθεια, παθήσεις του θυρεοειδούς αδένα ή διαταραχές των ηλεκτρολυτών στο αίμα.
Σπάνια το αίσθημα παλμών μπορεί να προκαλείται από απειλητικές αρρυθμίες, οι οποίες προκαλούν την παύση της λειτουργίας της καρδιάς.
Στις περιπτώσεις αυτές, οι επιπλοκές μπορεί να είναι απειλητικές για την υγεία, ενώ, αν το φτερούγισμα οφείλεται σε κολπική μαρμαρυγή, είναι δυνατόν να σχηματιστούν θρόμβοι στο αίμα, οι οποίοι στη συνέχεια μπορεί να φράξουν μία αρτηρία του εγκεφάλου, προκαλώντας εγκεφαλικό επεισόδιο.
Τι πρέπει να κάνετε
Σε περίπτωση που έχετε συχνά αίσθημα παλμών που υποψιάζεστε ότι συνοδεύεται από αρρυθμίες, τότε καλό είναι να επισκεφθείτε το συντομότερο δυνατό έναν καρδιολόγο.
Οι εξετάσεις που είναι απαραίτητες για τη διερεύνηση του αισθήματος παλμών είναι το καρδιογράφημα, το Holter ρυθμού 24ωρου,  η δοκιμασία κόπωσης, ενώ σε ορισμένες περιπτώσεις μπορεί να χρειαστεί περαιτέρω μελέτη και αυτό θα το κρίνει ο γιατρός σας .

What Causes Heart Palpitations? 

 

What It Feels Like

Your heart pounds, flutters, or seems to skip beats. You might call these feelings palpitations. Although they can feel scary, most aren't serious and rarely need treatment. Knowing what makes your heart race can help you not panic when it happens and know when to call your doctor.

Stress and Anxiety

Intense emotions can trigger the release of hormones that speed up your heartbeat. Your body gets ready to face a threat, even if you're not in danger. Panic attacks are intense bouts of fear that can last a few minutes. Symptoms include a racing heart, sweating, chills, trouble breathing, and chest pain. A panic attack can feel like a heart attack. If you're not sure which one you're having, get medical help.

Exercise

Working out is good for you. And a brisk run or intense indoor cycling class will naturally make your heart beat faster. That helps your heart pump more blood to power your muscles through the workout. If your heart flutters or pounds, it could be because you haven't worked out in a while and you're out of condition. An irregular heartbeat, or arrhythmia, can also cause palpitations when you exercise.

Caffeine

Does your heart beat faster after your morning latte? Caffeine is a stimulant that raises your heart rate, whehther you get it from coffee, soda, an energy drink, tea, chocolate, or another source. One study found that caffeine from coffee, tea, and chocolate isn’t likely to cause palpitations in people with healthy hearts. But experts don't know whether it might trigger them in people with heart rhythm problems.

Nicotine

The addictive chemical in cigarettes and other tobacco products, nicotine raises your blood pressure and speeds up your heart rate. Quitting smoking is one of the best things you can do for your heart, though it might not slow your heartbeat right away. Patches and other nicotine replacement products can make your heart race. Palpitations can also be a symptom of nicotine withdrawal, but they should stop within 3 to 4 weeks after you quit.

Hormone Changes

Women might notice that their heartbeat speeds up when they have their period, they're pregnant, they’re close to menopause, or they're in menopause. The reason: hormone levels. The boost in heart rate is usually temporary and no reason for worry. If you're pregnant, palpitations can also happen if you're anemic, which means you don’t have enough red blood cells that carry oxygen throughout your body. 

Fever

When you have a fever during an illness, your body uses energy at a faster pace than usual. This can set off palpitations. Usually your temperature needs to be above 100.4 F to affect your heart rate.

Medicines

Some prescription and over-the-counter medicines cause palpitations as a side effect, including: Antibiotics Antifungal medicines Antipsychotic drugs Asthma inhalers Cough and cold medicines Diet pills High blood pressure medicines Thyroid pills If you take one or more of these types of meds, ask your doctor if it could affect your heartbeat. Don't skip any doses before you check with your doctor.

Low Blood Sugar

Have you ever noticed that you feel shaky, cranky, and weak when you've skipped a meal? It can also lead to palpitations. When your blood sugar level drops, your body releases stress hormones like adrenaline to prepare for an emergency food shortage. Adrenaline speeds up your heart rate.

Overactive Thyroid Gland

Your thyroid is a butterfly-shaped gland in your neck. It makes hormones that help manage your metabolism and other things. An overactive thyroid (called hyperthyroidism) can make too much thyroid hormone. That can speed up your heart so much that you feel it beating in your chest. Taking too much thyroid hormone to treat an underactive thyroid gland (called hypothyroidism) can also rev up your heartbeat.

Heart Rhythm Problems

Sometimes an irregular heart rhythm, called an arrhythmia, causes palpitations.

• Atrial fibrillation, or AFib, happens when the heart's upper chambers, called the atria, flutter instead of beating normally.
• Supraventricular tachycardia is an abnormally fast heartbeat that starts in the heart's upper chambers.
• Ventricular tachycardia is a fast heart rate due to faulty signals in the heart's lower pumping chambers, called the ventricles.

Alcohol

If you drink a lot, or just have more than usual, you might feel your heart beating faster or fluttering. It often happens on holidays or weekends, when people drink more, earning it the nickname of "holiday heart syndrome.” But for some people, it can happen even when they only drink a little bit.

Premature Ventricular Contractions

Premature ventricular contractions (PVCs) are extra heartbeats. They happen when your heart's ventricles squeeze too soon. The extra beat throws off your heart's normal rhythm and makes it flutter, pound, or jump in your chest. If your heart is healthy, occasional PVCs are nothing to worry about. But you might need treatment if you have heart disease and you get these extra beats often.

Cocaine and Other Street Drugs

Illegal drugs like amphetamines, cocaine, and ecstasy are dangerous to the heart. Cocaine boosts blood pressure, raises heart rate, and damages the heart muscle. Amphetamines stimulate the nervous system, which ramps up your heartbeat. Ecstasy triggers the release of a chemical called norepinephrine, which makes the heart beat faster.

When to See a Doctor

If you're healthy, you probably don't need to worry about palpitations that happen once in a while and last only a few seconds. But make a doctor's appointment if they come more often or you also have symptoms like these:

• Chest pain or pressure
• Shortness of breath
• Dizziness
• Fainting

Finding the Cause

These tests can help your doctor figrue out what's going on:

• Electrocardiogram (ECG). This test looks for problems with the electrical signals that control your heart rhythm.
• Holter monitor. You wear this portable ECG for 24 to 72 hours at a time. It can find heart rhythm problems and any patterns that might need more tests.
• Event Monitor. You wear this device for several weeks. It records your heart rhythm when you press a button while having symptoms.
• Echocardiogram. This test uses sound waves to make pictures of your heart. It can find problems with your heart's structure.

SOURCES : WebMD ,  AHA  etc.