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What causes tachycardia with shortness of breath and nausea?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I have had some sickness and fatigue recently after a simple workout, lasting all day, and episodes of spikes in tachycardia while at rest, and most recently, my heart rate has been going up and down at rest. I have shortness of breath when walking and doing household activities. I feel very lightheaded, dizzy, and nauseated daily, off and on. Four ECGs (electrocardiography) were done with LVH (left ventricular hypertrophy), T wave, and ST-T wave abnormalities. Chest X-ray was clear. I have been told that ECGs are normal. I will be doing a Holter monitor soon. I am overweight and taking Losartan 50 mg for blood pressure. I also have Hashimoto. These weird cardiac symptoms have been creeping up for maybe six months, and the past month has gotten worse. I am concerned about blood clots, mass, or something being missed. Please help.

Thank you.

Answered by Dr. Sapkal Ganeshrao Patilba

Education:

DM in Cardiology

Professional Bio:

Dr. Sapkal Ganeshrao Patilba is a Cardiologist with seven years of clinical experience. He is highly skilled in diagnosing, treating, and preventing heart and blood vessel diseases, offering advanced care to enhance cardiovascular health and improve the well-being of his patients.      

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome to icliniq.com.

I went through the details you provided.

The symptoms are likely to be related to heart rate fluctuations. We have to find out the cause of this. We will require tests like 2-D echocardiography, Holter, thyroid profile, serum creatinine, serum electrolytes, and LFT (liver function test). With hypertension, thyroid, excess weight, and sleep apnea, there are structural changes in the heart that may cause atrial fibrillation, atrial tachycardia, and excess ectopics. This may contribute to your symptoms. Treatment will depend on the cause of the symptoms. Blood clots may occur with irregular heart rates like atrial fibrillation. Heart mass may be diagnosed with 2-D echocardiography.

Hope this helps.

Thank you.

Patient's Query

Hello doctor,

Thank you for your reply. What is your opinion on the ECG (electrocardiogram) results I have had? Thank you.

Answered by Dr. Sapkal Ganeshrao Patilba

Education:

DM in Cardiology

Professional Bio:

Dr. Sapkal Ganeshrao Patilba is a Cardiologist with seven years of clinical experience. He is highly skilled in diagnosing, treating, and preventing heart and blood vessel diseases, offering advanced care to enhance cardiovascular health and improve the well-being of his patients.      

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome back to icliniq.com.

As I mentioned, ECG (electrocardiogram) findings are also related to heart structural changes. LVH (left ventricular hypertrophy) and left atrial enlargement are related to hypertension.

I hope this helps.

Please revert so I can assist you further.

Thank you.

Patient's Query

Hello doctor,

I just wanted to know the cause as the doctors said they were incidental findings and normal. Thank you.

Answered by Dr. Sapkal Ganeshrao Patilba

Education:

DM in Cardiology

Professional Bio:

Dr. Sapkal Ganeshrao Patilba is a Cardiologist with seven years of clinical experience. He is highly skilled in diagnosing, treating, and preventing heart and blood vessel diseases, offering advanced care to enhance cardiovascular health and improve the well-being of his patients.      

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome back to icliniq.com.

You did not provide the ECG (electrocardiogram) paper and provided interpretation only. My opinion is based on provided interpretation. ECG machine interpretation needs to be correlated with actual ECG. So these may be incidental findings.

I hope this helps.

Please revert so I can assist you further.

Thank you.

Patient's Query

Hello doctor,

I do not have the actual ECG printouts, just the interpretation. LFT done = ALT (alanine transaminase) is 94 U/L, and AST (aspartate aminotransferase) is 47 U/L. GFR (glomerular filtration rate) is 81, glucose is 108 mg/dL, creatinine and BUN (blood urea nitrogen) are normal, and TSH (thyroid stimulating hormone) and electrolytes are normal. Thank you.

Answered by Dr. Sapkal Ganeshrao Patilba

Education:

DM in Cardiology

Professional Bio:

Dr. Sapkal Ganeshrao Patilba is a Cardiologist with seven years of clinical experience. He is highly skilled in diagnosing, treating, and preventing heart and blood vessel diseases, offering advanced care to enhance cardiovascular health and improve the well-being of his patients.      

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome back to icliniq.com.

There is a slight elevation in the liver enzymes. Do you have the bilirubin report? We may need to evaluate it in detail.

I hope this helps.

Please revert so I can assist you further.

Thank you.

Medically reviewed by Dr. K. Shobana
Published At August 7, 2023
Reviewed At May 8, 2026

Education:

DM in Cardiology

Professional Bio:

Dr. Sapkal Ganeshrao Patilba is a Cardiologist with seven years of clinical experience. He is highly skilled in diagnosing, treating, and preventing heart and blood vessel diseases, offering advanced care to enhance cardiovascular health and improve the well-being of his patients.      

This doctor is not available for online consultations on the platform anymore.

Education:

BDS

Professional Bio:

Dr. K. Shobana is a Dental Surgeon specializing in oral health and dental care. She is skilled in preventive dentistry and provides oral hygiene education. She can do restorative treatments such as fillings and crowns. She can handle periodontal problems such as gum diseases and periodontitis. She can do root canal treatment.

This doctor is not available for online consultations on the platform anymore.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Education:

DM in Cardiology

Professional Bio:

Dr. Sapkal Ganeshrao Patilba is a Cardiologist with seven years of clinical experience. He is highly skilled in diagnosing, treating, and preventing heart and blood vessel diseases, offering advanced care to enhance cardiovascular health and improve the well-being of his patients.      

This doctor is not available for online consultations on the platform anymore.

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