Sustained tachycardia ( heart rate more than 100) for longer duration of periods is not good. Fever, hyperthyroidism, acute stress, anemia, waking up from sleep can cause increase in heart rate.... But sustained tachycardia is not good. Get 24 hours holter monitoring test done to know pattern of your heart rate. Sometimes too high heart rate can lead to arrhythmias ( abnormal rate and rhythm of heart). Seek a cardiologist help At the earliest possible.

Get Holter monitoring done to see actual pattern of your pulse rate. Get thyroid profile done. Share results with detailed medical history,  then I can guide you better.

  GO FOR ECG OR PUT YOUR SELF UNDER MONITOR  FOR SLEEPING PULSE.

Do consult

What you are noticing is likely your heart rate at the moment of waking from REM (deep dreaming) sleep — heart rate naturally rises significantly during REM sleep and then drops within seconds of waking, which matches your experience of it normalising in 30 seconds. However, since this has been going on for 5 months and you are worried about sustained high heart rate during sleep, you do need proper evaluation — you cannot know for certain what your heart rate is doing throughout sleep just by checking at the moment of waking. The most important test is a 24-hour Holter monitor, which records your heart rhythm continuously including during sleep and will tell you exactly what is happening. Also get a resting ECG, thyroid profile (TSH, FT3, FT4), CBC for anaemia, and if sustained tachycardia is confirmed on Holter, an echocardiogram to check heart function. A genuinely sustained heart rate of 130–140 bpm for 7 hours nightly over 5 months can eventually affect heart function, so this needs to be confirmed and addressed.

Proper evaluation and personalised advice are needed for your concern. A detailed consultation would be best to provide accurate guidance. Feel free to consult me for further assistance.

Hello. First, please try not to worry too much about this. The fact that your heart rate drops back to normal within just 30 seconds of waking up is actually a good sign.When you wake up, your body releases a natural surge of hormones like cortisol and adrenaline to help you transition from sleep to being awake. This "arousal response" can cause a temporary spike in your pulse.To answer your main concern: a brief spike like this will not weaken your heart muscle. For a heart muscle to weaken (a condition known as tachycardiomyopathy), the pulse typically needs to stay consistently high—well over 100 to 130 bpm—all day and all night for weeks or months at a time. Because yours recover almost immediately, it is highly unlikely to cause any long-term damage.Sometimes, factors like minor dehydration, stress, caffeine late in the day or even vivid dreams right before waking can make this morning spike more noticeable. Since you are not feeling any other symptoms, it is very likely a normal physiological reaction, but it is always smart to get it checked out for peace of mind.

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Consult a cardiologist Do a CBC ECG 2d echo THROID PROFILE and serum electrolyte

Yes it does, however (this is important) maybe anxiety, nightmares/night terrors can increase the pulse rate whereas sleep reduced the pulse rate. If you are snoring or have OSA pulse rate can be high but not this high. You say your PR comes to normal after sometime so we don't know exactly how long it has been like this. The best investigation I'd suggest is a 24hr ECG holter for recording this thing.

Kindly consult with me on 94 two six 86 seven eight 96 for proper guidance.

Get ECG done , If possible Holter monitoring

Go for ecg ,or you can consult directly with general physician.

Need a few more details please consult for further evaluation and treatment

Avoid fried and spicy food Water intake more Green leafy vegetables more Fiber meal Do connect and consult Will help u

Can help you, kindly consult and provide detailed history for proper diagnosis and further management

Yes, it happens