Why do heart attacks happen at night?

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Dr Ranjith Darla

General Practitioner

MBBS
3+ Yrs

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Researchers found that at around 6:30 a.m. the circadian system sends out an increased amount of PAI-1 cells which blocks blood clots from breaking down. The more PAI-1 cells in the blood, the higher the risk for a blood clot that leads to a heart attack

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Answered 04/07/2025

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Is my EKG normal? Can you manually check the QTc levels because last time the machine got it wrong? Also, I'm confused about what non-specific ST depression means. From what I understand, ST depression is linked to a heart attack or ischemia. I've had ECGs before, but this is the first time I've seen this in the report. Could you help explain this?

Regarding the EKG, I cannot check the QTc levels manually through this platform. Non-specific ST depression on an EKG means that there are changes in the ST segment of the EKG that are not specifically indicative of a heart attack or ischemia. It can be caused by various factors such as electrolyte imbalances, medications, or even normal variation. If you have concerns about the findings on your EKG, it would be best to discuss them with your healthcare provider for further evaluation and interpretation.

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