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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Can Cause Knocking Sensation In Chest While Sleeping?

Hi, I belive I may suffer from suffer from nocturnal seizures and I have been diagnosed with sleep apnea. Last night I awoke after some sort of episode, my face felt really hot and I felt this knocking sensation in or on my chest. It felt as though somebody was knocking on my chest with their knuckles, I could even hear the sound.
What could this be?
Thank you
Tue, 26 Aug 2014
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Pulmonologist 's  Response
Thank you for your question on HCM. Since you are a diagnosed case of sleep apneoa the episode must be apneonic episode. In this you stop breathing for a while and this causes oxygen saturation going down and carbon dioxide saturation going up. This high CO2 cause vasodilation and increase blood flow and cause warm skin. It can also cause tremors and this may give you false belief of seizures. So start using CPAP machine in night for sleep apneoa.
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What Can Cause Knocking Sensation In Chest While Sleeping?

Thank you for your question on HCM. Since you are a diagnosed case of sleep apneoa the episode must be apneonic episode. In this you stop breathing for a while and this causes oxygen saturation going down and carbon dioxide saturation going up. This high CO2 cause vasodilation and increase blood flow and cause warm skin. It can also cause tremors and this may give you false belief of seizures. So start using CPAP machine in night for sleep apneoa.