Sign-in to Ask A Doctor - 24x7
OR
Sign in with GoogleGet your health question answered instantly from our pool of 18000+ doctors from over 80 specialties
What Causes Fainting Episodes With Rapid Heart Rate?
My wife has been having sporadic events in which she, without warning, faints for about 10 seconds, followed by her heart rate increasing to about 140 for 10 minutes or so. There does no appear to be any association to her activity or body position at the time of the event. She is slightly anemic; iron levels around 25. She is 39, in good health otherwise; approx 5 6 , 120 lbs. Cardiologist have run stress test, EKG, and X-Ray and find no problems. Any ideas as to the cause?
Mon, 3 Jun 2024
Hi,
Your wife might be probably experiencing paroxysmal arrhythmias (eg: paroxysmal supra-ventricular tachycardia, paroxysmal atrial fibrillation etc.) This condition causes paroxysms of abnormal increase in heart rate leading to symptoms like syncope, fatigue, nausea, hypotension which may resolve spontaneously. This can be caused by abnormal electrical conduction pathway in the heart. It can also be caused by excess alcohol intake, obesity, caffeine, hyperthyroidism, cardiomyopathies, drugs, structural heart diseases, stress etc.
I would advise you to consult a cardiologist at the earliest for further evaluation by doing an electrophysiological study of the heart which assesses the conduction system and a Holter assessment (24 hour cardiac monitoring).
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Devi Venugopal Rita, Internal Medicine Specialist
Your wife might be probably experiencing paroxysmal arrhythmias (eg: paroxysmal supra-ventricular tachycardia, paroxysmal atrial fibrillation etc.) This condition causes paroxysms of abnormal increase in heart rate leading to symptoms like syncope, fatigue, nausea, hypotension which may resolve spontaneously. This can be caused by abnormal electrical conduction pathway in the heart. It can also be caused by excess alcohol intake, obesity, caffeine, hyperthyroidism, cardiomyopathies, drugs, structural heart diseases, stress etc.
I would advise you to consult a cardiologist at the earliest for further evaluation by doing an electrophysiological study of the heart which assesses the conduction system and a Holter assessment (24 hour cardiac monitoring).
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Devi Venugopal Rita, Internal Medicine Specialist
I find this answer helpful
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
This is a short, free answer.
For a more detailed, immediate answer, try our premium service
[Sample answer]
Related questions you may be interested in
Recent questions on Electrocardiography
Loading Online Doctors....