Alien Emergencies - James White [294]
“From my FROB tape and lectures at various times on Hudlar pathology,” he went on, nodding in acknowledgment toward Thornnastor, “it is clear that the various painful and incurable conditions to which the aged of that species are prey are traceable to a common cause. The loss of function in the limbs and the abnormal degree of calcification and fissuring at the extremities can be ascribed to the simple deterioration in circulation which is common to the aged of any species.
“This is not a new idea,” Conway said, glancing quickly toward Thornnastor and Murchison. “However, as a result of working on a large number of Hudlar limb and organ replacement operations from the Menelden accident, it occurred to me that the deterioration I observed in the organs of absorption and evacuation among the aged FROBs was very similar to the temporary condition which occurred during the replacement of a heart, although at the time I was too busy to note the signs consciously. In short, the problems of the FROB geriatrics are due to circulatory impairment or inadequacy.”
“If the idea isn’t new,” O’Mara said with a flash of his characteristic sarcasm, “why am I listening to it?”
Murchison was watching him in silence. Thornnastor continued to watch its food, Murchison, O’Mara, and Conway, also without speaking.
“The Hudlars are a very energy-hungry species,” Conway went on. “They have an extremely high metabolic rate which requires a virtually continuous supply of nutrient via their organs of absorption. The food thus metabolized serves the major organs, such as the two hearts, the absorption organs themselves, the womb when the entity is in gravid female mode, and, of course, the limbs.
“I had learned from the pathology lectures,” he continued, “that these six immensely strong limbs are the most energy-hungry system of the body, and demand close to eighty percent of the nutrient metabolized. But it was not until the recent Hudlar experience that my mind was drawn forcibly to this data, and to the fact which is also widely recognized, that it is the ultrahigh metabolic rate and excessive food requirement which enables the adult Hudlar to be so fantastically resistant to injury and disease.”
O’Mara was getting ready to interrupt again, and Conway went on quickly. “With the onset of old age their troubles invariably begin in the limbs, which demand an even greater proportion of the body’s available resources to fight it. This places increasing stress on the twin hearts, absorption, and evacuation organs, all of which require their share of and are interdependent on the circulatory system’s nutrient content. As a result these systems go into partial failure, which further reduces the blood supply to the limbs, and the body as a whole slides into a degenerative spiral.”
“Conway,” O’Mara said firmly, “I assume this lengthy but no doubt oversimplified clinical picture is for the benefit of the poor, ignorant psychologist so that he will understand the psychological questions when they come, if they ever come.”
Continuing with its meal, Thornnastor said, “The clinical picture is oversimplified, I agree, but essentially correct, although your method of describing it suggests a new approach to the problem. I, too, am impatient to know what it is that you intend.”
Conway took a deep breath and said, “Very well. It seems to me that the drain on the age-reduced resources of these Hudlars, represented by the irreversible limb conditions, can be alleviated before onset. With reduced stress and a greater share of the available nutrient supply, the hearts and organs of absorption and elimination could maintain their functions for an additional several years while keeping up optimum levels of circulation to the remaining limb or limbs.”
All at once it seemed that O’Mara’s face in the screen had become a still picture; Murchison was staring at him with a shocked expression, and all four of Thornnastor’s eyes had turned to regard him.
“Naturally the procedure would be one of elective surgery,” Conway went on, “and would not take place except