Why the study?
Do physical maneuvers such as head elevation and carotid compression reduce the risk of cerebral embolization in a rabbit model of left ventricular emboli injection?
Do physical maneuvers such as head elevation and carotid compression reduce the risk of cerebral embolization in a rabbit model of left ventricular emboli injection?
In a rabbit model, combining head elevation with manual carotid compression significantly reduced the risk of cerebral embolization from left ventricular emboli.
Should not change clinical practice; hypothesis-generating for embolic protection maneuvers in humans.
In a study for possible means of diminishing the risk of cerebral embolization following mitral valvulotomy, radio-opaque emboli were injected into the left ventricle of the rabbit's heart and the subsequent distribution of the emboli assessed roentgenographically.The observations may be summarized as follows:1) ligation of the left carotid artery does not increase the risk of cerebral embolization on the other side;2) maintenance of the head in a raised position or manual compression of the carotid arteries diminishes the risk of cerebral embolization;3) combination of the last 2 methods diminishes the risk of cerebral embolization to 2 per cent in comparison with 27 per cent in the control group. No cerebral embolus was found in 4 of 7 animals in this group.
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S. J. Dencker (1953) studied this question.
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