clamping off the artery beyond the artificial heart connection, detaching it, and reconnecting it to the arterial stub projecting from the replacement organ. Unlike the first, shocking seconds of the earlier hemorrhaging, time seemed to have speeded up. His hands and instruments were well outside the field of the nullifiers, being acted on by four Earth-Gs, so they felt incredibly slow and awkward. Several times his instruments clinked loudly against those of Hossantir. He could sympathize with the surgeon, whoever it had been, who had accidentally knocked that connector valve off its setting. He had to concentrate hard to keep his instruments from leading a life of their own.
He did not watch Hossantir’s work, because the Tralthan knew its stuff and there was no time for surgical sightseeing.
He inserted retaining sutures to hold the artery in position on each end of the connector, which was designed both to hold the ends firmly in position when circulation was restored and to keep the sections of original and replacement tissue apart so as to reduce postoperative rejection problems. There were times when, immunologically speaking, he wondered why a highly evolved and complex organism should be its own worst enemy. Next he began the linkup of the vessel which supplied nutrient from the absorption organ to one of the major heart muscles.
Hossantir had completed its connection and had turned its attention to the minor vessel which supplied one half of the womb when the Hudlar was in female mode-the second, undamaged heart had been performing double duty since the start of the operation. They were short of time, but as yet not dangerously so, when the Tralthan indicated the Monitor with a free appendage.
“Ectopics,” Hossantir said. “One in five, no, one in four. Pressure is reducing. The indications are that the heart will go into fibrillation and arrest very quickly. The defibrillator is ready.”
Conway took a quick look at the visual display where the irregular, ectopic heartbeat broke into the normal rhythm once in every four beats. From experience he knew how soon it could degenerate into a rapid, uncontrollable flutter and, with the subsequent loss of the pumping function, failure. The defibrillator would almost certainly shock it into action again, but that device could not be used while the operation on the replacement heart was in progress. He resumed his work with desperate, careful speed.
So deep was his concentration that all of his minds were becoming involved again, contributing their expertise and at the same time their irritation that it was a set of Earth-human hands which were doing the work and not the assorted manipulators, pincers, and digits of his alter egos. He looked up finally to find that Hossantir and he had finished their connections at the same time. But a few seconds later the other heart went into fibrillation, then arrest. Their time was really short now.
They eased the clamps on the main artery and secondary vessels and watched the flaccid replacement organ swell slowly as it was filled with Forty-three’s blood, checking with their scanners for the formation of air embolisms. There were none, so Conway placed the four tiny electrodes in position preparatory to restarting the replacement heart. Unlike the defibrillator charge needed for the other heart, which would have to penetrate more than ten inches of hard, Hudlar tegument and underlying tissue, these electrodes would be acting directly on the surface muscles of the replacement organ and would be carrying a relatively mild charge.
The defibrillator brought negative results. Both hearts fluttered unsteadily for a few moments and then subsided.
“Again,” Conway said.
“The embryo has arrested,” Hossantir said suddenly.
“I was expecting that,” Conway said, not wanting to sound omniscient, but neither did he have the time for explanations.
Now he knew why he had wanted to complete the replacement connections so fast after the emergency with the valve. It had been not a hunch but a memory from the past when he had been a very junior intern, and the memory was one of his own.
ft had happened during his first lecture on the FROB life-form, which had been given by the Diagnostician-in- Charge of Pathology, Thornnastor. Conway had made a remark to the effect that the species was fortunate in having a standby heart if one should fail. Conway had meant it as a joke, but Thornnastor had jumped on him, figuratively speaking, with all six of its feet for making such a remark without first studying the Hudlar physiology in detail. It had gone on to describe the disadvantages of possessing two hearts, especially when the possessor was a gravid female-mode Hudlar nearing parturition, and the nerve network which controlled the involuntary muscle system was maintaining a delicate balance between the impulses to four hearts, two parental and two embryonic. At that particular stage the failure of one heart could quickly lead to the arrest of the other three.
“And again,” Conway said worriedly. The incident had not been worth remembering then, because major surgery on FROBs was considered to be impossible in those days. He was wondering if survival for this particular Hudlar was impossible now when both of its hearts twitched, hesitated, then settled into a strong, steady beat.
“The fetal hearts are picking up,” Hossantir said. A few seconds later it added, “Pulse-rate optimal.”
On the sensor screen the cerebral traces were showing normal for a deeply unconscious Hudlar, indicating that there had been no brain damage as a result of the few minutes cessation of circulation, and Conway began to relax. But oddly, now that the emergency was over the other occupants of his mind were becoming uncomfortably obtrusive. It was as if they, too, were relieved and were reacting with too much enthusiasm to the situation. He shook his head irritably, telling himself once again that they were only recordings, simply stored masses of information and experience which were available to his, Conway’s, mind to use or ignore as he saw fit. But then the uncomfortable thought came to him that his own mind was simply a collection of knowledge, impressions, and experience collected over his lifetime, and what made his mind data so much more important and significant than that of the others?
He tried to ignore that suddenly frightening thought by reminding himself that he was still alive and capable of receiving new impressions and continuously modifying his total experience as a result of them, while the taped material had been frozen at the time it had been donated. In any case, the donors were long since deceased or far removed from Sector General. But Conway’s mind felt as though it was beginning to doubt its own authority, and he was suddenly afraid for his sanity.
O’Mara would be furious if he knew Conway was indulging in this kind of thinking. So far as the Chief Psychologist was concerned, a Doctor was responsible for his work and for the tools, both physical and psychological, which enabled him to do that work. If the Doctor could not perform satisfactorily, then the person concerned should seek a less demanding job.
There were few jobs more demanding than that of a Diagnostician.
His hands were beginning to feel wrong again, and the fat, pink, and strangely awkward fingers were trembling. Conway stowed away his DBDG instruments and turn — ed to Hossantir’s Melfan assistant, whose ID was still smeared with blood and only partly readable, and said, “Would you like to resume, Doctor?”
“Thank you, sir,” the ELNT said. Obviously it had been worrying in case Conway, as a result of his intervention, had thought the Melfan incapable of doing the work. Right now, he thought grimly, the opposite is true.
“It is not expected,” Hossantir said gravely, “that you should do everything yourself, Conway.”
Plainly the Tralthan knew that something was wrong with him- Hossantir’s eyes missed nothing, even when all four of them seemed to be looking in other directions. Conway watched for a few minutes until the team had closed up, then he left Forty-three to check on the progress of the other two patients. Psychologically he felt unwell.
The organ of absorption had been successfully transplanted into Ten, and Edanelt and his team were busy with the microsurgery required on the replacement limbs. The patient was out of danger, however, because the new organ had been tested with an application of nutrient paint and the sensors showed that it was performing satisfactorily. While he was complimenting the team on its work, Conway stared at the heavy staples which held the edges of the wound together-so closely sutured were they that the wound looked like an enormous zip-fastener. But nothing less would serve to hold an FROB’s hard, thick, and incredibly tough hide together, and the material of the staples was molecularly unstable so that they could be rendered flexible for withdrawal when the healing process was complete.
But an almost invisible scar, the Hudlar component of Conway’s mind insisted, would be the least of this patient’s problems.
