Ecgs: What ecg abnormalities can you see in wolff-parkinson-white (wpw) syndrome? What are they due to? What is the danger?

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1. Ecgs: What ecg abnormalities can you see in wolff-parkinson-white (wpw) syndrome? What are they due to? What is the danger?

Because of first pass metabolism. Liver mets and lung carcinoid tumours don't have this and do produce carcinoid syndrome.
1. Initial osteolytic phase 2. Mixed osteoclastic-osteoblastic stage resulting in a predominance of osteoblastic activity with a net gain in bone mass 3. Burnt out quiescent osteosclerotic stage
In wpw there is an accessory pathway connecting the atria to the ventricles and bypassing the bundle of his. This causes pre-excitation of the ventricles resulting in a short pr interval and broad qrs complexes that begin with a characteristic slurred upstroke qrs complex, a delta wave. The danger is that depolarization can spread down the his bundle and back up the accessory pathway resulting in a re-entry tachycardia.
Typically presents insiduously with non-specific features such as abdominal pain, weight loss, anorexia and vomiting. More than 50% develop jaundice at some time but less than 20% are jaundice at presentation. Migratory thrombophlebitis (trouseau's sign) may be present, as may courvoisier's sign,

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Ecgs: What ecg abnormalities can you see in wolff-parkinson-white (wpw) syndrome? What are they due to? What is the danger?

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