Conversation: The conversation between human and AI assistant.
[|Human|] My mother has been told she is 2 pints low on blood. Her heart is skipping beats in the bottom part of her heart. Now she has had a spell where she just blacked out. I m afraid she could have a stroke but the doctor said that a stroke comes from the top chamber of her heart. Is there still a chance of a stroke?
[|AI|]  Brief answer : Yes irregular heart beat may lead to stroke. Detailed Answer:Hello, Thank you for using Chat Doctor. The skipping beats from the bottom part of the heart, so-called premature ventricular complexes (PVC's), when happen frequently, are associated with risk of incident stroke even in patients free of hypertension and diabetes. Frequent PVC's are associated with impaired ventricular relaxation that leads to demodulation of the heart increasing the risk of clot formation and embolization. Even though there are not to many studies about the relationship of ventricular rhythm abnormalities with stroke, in contrast to the established association of atrial fibrillation(irregular heart beat by the upper part of the heart) with incident stroke. That's why your doctor told you that strokes comes from the top chambers of the heart. To rule out a possible stroke your mother should undergo a head CT scan or MRI. Hope this is helpful. Let me know if you need more clarifications. Otherwise, please close and rate the answer. Kind