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Narrowing of the lumen of major arteries supplying the leg is associated with A. Pain in the calf during exercise which is relieved by rest. B. Growth of collateral vessels. C. Reduction in the duration of reactive hyperaemias in the calf. D. Delayed healing of cuts in leg skin. E. Reduced arterial pulse amplitude at the ankle. |
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Answer» A. True This is ‘intermittent claudication’; pain metabolites accumulate in muscle during exercise in ischaemic limbs and stimulate local pain receptors. B. True When the major arteries are obstructed, collateral vessels open up to help maintain blood flow to the ischaemic tissues. C. False Though the hyperaemias have smaller peak values, their durations are longer. D. True Cuts and ulcers are slow to heal because the supply of nutrients is impaired. E. True Pulses may be absent with severe narrowing. |
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