THE EFFECT OF WARM AND OF COLD NASOPHARYNGEAL IRRIGATION ON CERVICAL LYMPH FLOW

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Abstract
Cervical lymph flow was measured quantitatively in dogs during 20 or 30-min. periods of nasopharyngeal irrigation with isotonic saline at temps. ranging from 5[degree]C. to 55CC. Passive motion of the head of the animal insured a constant lymph flow without the use of massage. Critical temps., with respect to lymph flow and protein content, corresponded closely to those reported for general vascular changes influencing capillary filtration. Continuous irrigation with isotonic saline at temps. above 5[degree]C. and below 45[degree]C. caused no marked variations in lymph flow or in its protein content. At 45[degree] C, the lymph flow increased with no change in the protein %. This augmented flow continued only during the period of heat application and was the result of a rise in the rate of capillary filtration. At 50[degree] C. and above, irreversible changes in capillary permeability occurred. The lymph flow became profuse, was highly proteinized, and did not return to normal with reduction of the temp. Irrigation at 5[degree]C. produced an augmented lymph flow which, depending upon the absence or presence of capillary damage, was either temporary or more prolonged.

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