OpenHealth Q&A

Rapid Heart Rate During Illness

A 27-year-old male, standing at 6 feet 3 inches tall and weighing 275 pounds, presents as non-smoking with a medical regimen including buspirone, sertraline, and Nexium. He does not consume alcohol or use illicit drugs. His medical background highlights anxiety and a previously noted Wolff-Parkinson-White (WPW) pattern observed on an ECG in 2023, without any prior ablation or recorded arrhythmias. On February 5th, I visited the emergency room after experiencing a sudden and alarming increase in my resting heart rate to approximately 130 beats per minute while at home. This spike was particularly distressing given my history of chronic anxiety. Reflecting on the earlier part of the day, I recall experiencing mild body aches, a cough, and a sensation akin to a low-grade fever, which now appear to have been early signs indicating I was becoming ill. Once at the emergency room, the medical team administered 10 mg of propranolol, resulting in a gradual decrease in my heart rate from 130 to the mid to upper 90s over a span of about one hour and 45 minutes. The ECG revealed only sinus tachycardia, and notably, the doctor informed me that the WPW pattern from 2023 was no longer evident. All laboratory tests returned normal results with standard electrolyte levels, kidney function (eGFR at 108), and a complete blood count showing only a typical stress response characterized by elevated neutrophils and reduced lymphocytes, alongside normal urine tests. There were no indications of dehydration, infection, thyroid irregularities, or arrhythmia. After returning home, it became clear that I was battling a viral infection. I experienced chills, extensive body aches, and fever peaking at 101.8°F, as well as a cough with medium brown mucus (not excessively dark or bright red). I have not experienced shortness of breath or wheezing at rest. Notably, my heart rate has paralleled my fever. When my fever ranges between 101°F and 102°F, my resting heart rate typically aligns between 105 and 125 beats per minute. Conversely, as my fever declines into the 99°F range, my heart rate drops to the 80s and 90s. Under normal circumstances, my resting heart rate hovers around 60 beats per minute. Currently, I am measuring a temperature of approximately 100.6°F to 100.8°F, with a heart rate around 110 to 115 beats per minute. About an hour ago, I took Tylenol, and am staying hydrated and resting. The only discomfort I feel is due to persistent coughing. I have a few inquiries: - Is this heart rate fluctuation typical during a viral infection accompanied by fever? - Should I expect to see an elevated heart rate persist even during sleep when my fever is elevated? - Is there any cause for concern regarding my previous WPW even though the recent ECG indicates that pattern is no longer present? Thank you for your assistance.

Answers (1)

2/6/2026, 5:30:50 PM

OpenHealth AI

Your observations regarding your heart rate increase during your recent illness are indeed valid and can be understood in the context of your body’s response to infection. Here’s a breakdown of your concerns and how to manage them:

Key Points:

1. Heart Rate Fluctuation During Illness: It's generally normal to experience an increase in heart rate (tachycardia) during a viral infection accompanied by fever.
2. Heart Rate at Night: Elevated heart rates can persist during sleep, especially when fever is present.
3. Previous WPW Pattern: The absence of the WPW pattern in your most recent ECG is reassuring, but it’s important to keep track of your heart health, especially with your medical history.

Explanation:

• Infection and Fever: When your body fights off a viral infection, your heart rate can naturally rise. Fever increases metabolic demands, which can lead to a higher resting heart rate. This pattern you're experiencing—where your heart rate corresponds with your fever—is a common physiological response.

• Sleep and Heart Rate: It's possible to have a higher resting heart rate while sleeping if you have a persistent fever, as your body remains active in managing the infection.

• Wolff-Parkinson-White (WPW): The previous findings of a WPW pattern and its current absence might mean it was a temporary observation. However, maintaining regular check-ups with a healthcare provider is wise, particularly if you experience any significant or concerning symptoms.

Next Steps:

1. Monitor Symptoms: Continue to monitor your temperature and heart rate. If your fever persists or your heart rate escalates, take note of any additional symptoms and prepare to seek further evaluation if necessary.

2. Stay Hydrated: You mentioned you are staying hydrated, which is crucial. Keep drinking fluids to help regulate your temperature and support your immune system.

3. Rest and Recovery: Focus on rest to give your body the time it needs to recover. Avoid stressful activities, particularly those that may exacerbate your anxiety or heart rate.

4. Cough Management: For your persistent cough, consider over-the-counter remedies or warm fluids, which can soothe soreness and help clear mucus.

5. Follow-Up: If your symptoms worsen or if you notice any irregular heart patterns, plans to consult with your healthcare provider regarding further cardiac evaluations.

6. Stay Aware of Changes: Be mindful of any new symptoms, such as chest pain, severe dizziness, or shortness of breath, which would require immediate medical attention.

Your recovery is the priority, and being attentive to your body's signals will be important in the coming days. Please reach out for more guidance if needed.