Some thoughts about Origin , Genesis and Mechanism of palpitation !

Not every one feels the palpitation during tachycardia / Bradycardia /VPDs , Why ? Palpitation is awareness of one’s own heart beat. It is a complex perception of sensation at cortical level (like dyspnea) . It can occur during physical and mental exertion.However , if it occurs without any physiological reasons , it becomes abnormal. It can mean an abnormally heart in terms of  heart rate , rhythm or  raise in stroke volume. The first rule of palpitation is both tachycardia and bradycardia can cause it. Tachycardic palpitation is due to valve motion and braducardic palpitation is due to both motion and increased stroke volume. The most common mechanism proposed for palpitation is hyperactive anterior mitral leaflet How and where  does the sensation of  palpitation felt ? Does  it originate in  the chest wall ?  or Is it the vibrations spreading along  the flow of blood in great vessels ?  or Simply  represent  the vigorous valve motion  sensed by Intra cardiac receptors ? How it is  transmitted to spinal cord where it’s felt at cortical level  ? We are not clear yet. Paccinian corpuscles is thought to sense these vibrations and hand over as electrical signals  to spinal cord either directly from cardiac valves /walls or indirectly from chest wall. Paccinian corpuscles are predominantly present in sensory nerve fibres located in the dermis of skin. It is also observed in nerve e...
Source: Dr.S.Venkatesan MD - Category: Cardiology Authors: Tags: cardinal symptom in cardiology Cardiology - Clinical Cardiology -Clinical signs Clinical cardiology Palpation mechansim of palpitation receptors for palpitation sensation of palpitation Source Type: blogs

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