The Dispersal of the Army

On March 17, 1953, in Blegdam Hospital’s polio ward, a rubber bag rests in a canvas sling above the bed, its corrugated sides still holding the shape of the last squeeze. Kaj Vårum, a medical student from the University of Copenhagen, stands alone at the bedside of a seventeen-year-old boy whose respiratory muscles have begun to twitch back to life. This boy is the last acute patient in the ward who still requires manual ventilation.

The three-shift schedule that once demanded fifteen hundred students has contracted to a single rotation of forty. Vårum counts the breaths, four seconds in and four seconds out, while the boy’s chest rises and falls with mechanical regularity. The ward around them has grown strange with space. Empty beds stand in rows. The chairs where students once sat shoulder to shoulder have been pushed against walls. The sound of synchronized squeezing, that soft rhythmic tide that filled the nights of August and September, has thinned to this single, conspicuous rhythm.

On the same morning, in an office on the hospital’s administrative floor, Chief Physician Henry C.A. Lassen signs a memorandum addressed to the faculties of medicine and dentistry. The document sets April 15, 1953, as the terminal date for student volunteer service in the polio ward. The reasons are clinical and unanswerable. The epidemic’s acute phase has ended; the outbreak that began in 1952 had been the worst in Denmark’s history. New admissions ceased in February. The remaining patients fall into two categories: those who have recovered sufficient respiratory function to breathe unassisted, and those whose paralysis is permanent, who must be transferred to chronic care facilities or, in the Danish system, to the rehabilitation centers at Hornbæk or Refsnæs. The manual ventilation that saved hundreds of lives is no longer a medical necessity. It has become, in the precise language of the memo, an educational exercise lacking therapeutic justification.

The students are being thanked for their service and dismissed.

The gap between these two scenes, Vårum’s solitary vigil and Lassen’s administrative decree, measures the distance the ward has traveled in seven months. The emergency that justified any improvisation, that suspended all normal arrangements of hospital labor, has dissipated. What remains is the problem of ending. The students of August 1952 had arrived without contract, without training, without any clear term of service. They had been told only that they were needed, that lives depended on their hands, and they had come by the hundreds. Now the institution must perform the reverse operation: release them without discarding them, close the volunteer system without appearing to close the ward, transform a collective moral enterprise back into individual professional futures. The difficulty is not medical. The system of human respirators that sustained the crisis has created dependencies that outlast its utility.

The first reductions come gradually. In late February, with the last new patient admitted, the night shifts are cut from three students per bed to two, then to one. The medical faculty, which had suspended normal teaching requirements for third- and fourth-year students, announces that clinical rotations will resume in March. The dental students, whose hands were found to be as capable as any, return to their drills and prosthetics. The three-shift system—eight hours on, sixteen hours off, around the clock—contracts to two shifts, then to daylight coverage only. The students who remain are those with particular attachments: to specific patients, to the ward’s routines, to the sense of purpose that the emergency conferred.

A fourth-year medical student, staying through March though his rotation ended in February, has been squeezing bags for a twenty-three-year-old woman whose diaphragm remains paralyzed but whose upper respiratory muscles have begun to fire. The weaning process requires patience that machinery cannot supply. The student must synchronize his squeezes with the patient’s own efforts, gradually reducing the volume and frequency of assisted breaths, watching the blood-gas numbers that Poul Astrup’s laboratory provides each morning. He has learned to read the slight tension in the patient’s neck muscles, the flutter of intercostals under the skin, as signals for when to assist and when to let her struggle. This is not work that can be handed off to a machine. It is also not work that justifies an army.

The farewells accumulate through late March. The hospital organizes a formal ceremony in the auditorium where, in August, Bjørn Ibsen had first explained tracheostomy and positive-pressure ventilation to rooms full of skeptical physicians. Now the students sit in the same seats, and Lassen reads a statement of gratitude from the Ministry of Health. Individual certificates are distributed, recording hours of service. The numbers are staggering—some students logged more than five hundred hours of continuous bag-squeezing—and their meaning is unclear. The certificates do not translate into academic credit. They will not appear on professional credentials. They attest only to presence, to the physical fact of having been there, hands on rubber, through the nights when the mortality rate fell from ninety percent to eleven.

Afterward, in the corridors and the changing rooms, the students exchange addresses. They have shared an experience for which no existing professional category exists. They were not nurses, though they performed nursing labor. They were not physicians, though they made clinical decisions about ventilation rates and recognized the signs of CO₂ retention before any alarm sounded. They were not technicians, though they maintained and modified equipment under conditions of extreme scarcity. The bonds formed in this categorical uncertainty do not map onto ordinary collegiality. Two students who squeezed bags side by side for a twelve-year-old girl in September find themselves unable to explain to their classmates what they did, or why it mattered, or why they wake sometimes with the phantom sensation of rhythm in their hands.

The last student shift ends on April 14, 1953. The ward is not empty. Fourteen patients remain, all chronic, all requiring some form of respiratory support. But the support is no longer manual. The Engström respirators, tested in the 1953 Swedish polio epidemic and now arriving in series from the workshop of Carl-Gunnar Engström in Stockholm, have begun to replace the rubber bags. These machines deliver positive-pressure breaths through tracheostomy tubes, their motors powered by electricity rather than human muscle. The positive-pressure ventilator has the advantage that the patient’s airways can be cleared by suction through the tracheostomy tube, and the patient can be fed through a nasogastric tube or gastrostomy. The drawback is that it requires tracheostomy—making a hole in the patient’s windpipe—and that it demands continuous monitoring by trained staff.

The students are gone. The machines remain.

The silence that follows is not peaceful. Nurses who had supervised the student shifts now find themselves responsible for equipment they did not choose and do not fully understand. The Engström respirators require adjustment of tidal volume, respiratory rate, and inspiratory-expiratory ratio. These parameters must be set according to blood-gas measurements that arrive from Astrup’s laboratory with a delay of hours. The students had adjusted by feel, by watching the chest rise, by the sound of air moving through the tracheostomy tube. The machines demand numbers. The nurses, experienced in patient care but not in engineering, must learn to translate between clinical observation and mechanical setting. Some leave. Others request transfer to other wards. The nursing shortage that the students had temporarily solved returns in altered form: not a shortage of hands, but a shortage of hands with the right kind of knowledge.

Bjørn Ibsen, who has directed the ward’s clinical operations since August, confronts a new set of problems. The volunteer system he improvised has demonstrated that continuous respiratory support is possible, that the boundary between survivable and fatal polio is not fixed by the disease but by the care system surrounding it. But the demonstration has exhausted its own foundations. The students were always a temporary resource, extracted from educational institutions that could not indefinitely suspend their normal functions. Their departure reveals what the emergency had concealed: the ward that saved hundreds of lives has no sustainable structure. It is not a department with defined staff, training programs, career ladders, and budget lines. It is a space that accumulated functions—ventilation management, blood-gas monitoring, tracheostomy care, rehabilitation coordination—without accumulating the institutional machinery to maintain them.

The vacuum of labor forces choices that had been deferred. Ibsen and Lassen begin to draft a formal proposal to the hospital administration. The document, completed in May 1953, requests the creation of a permanent unit with dedicated nursing staff, resident physicians, and technical support. It argues that the techniques developed during the epidemic—positive-pressure ventilation, blood-gas-guided respiratory management, the integration of mechanical and manual support—have established a new standard of care that cannot be abandoned. The proposal does not use the term “intensive care unit.” That name will come later, imported from American hospital architecture. But the description matches the function: a space where the sickest patients receive the most concentrated resources, where the ratio of staff to patient is inverted from ordinary wards, where technology and human attention combine in continuous surveillance.

The proposal meets resistance. The hospital’s budget committee notes that the epidemic has ended. The emergency appropriations that funded the student volunteers have expired. The Engström respirators, purchased with special Ministry of Health grants, represent capital equipment that must now be maintained from ordinary operating funds. The nursing positions Ibsen requests would have to be created by transfer from other departments, each of which has its own claims on limited personnel. The argument that the ward has demonstrated a new possibility carries less weight than the argument that the crisis has passed.

The mortality figures that Mogens Lassen compiled—showing the fall from ninety percent to eleven percent for bulbar polio patients—are impressive, but they describe a disease that is no longer epidemic. The committee asks: How many such patients does the hospital expect to admit in a normal year? The answer is uncertain. Polio is seasonal, cyclical, unpredictable. The techniques developed for it may apply to other conditions—tetanus, drug overdose, post-operative respiratory failure—but these applications are speculative. The proposal asks the hospital to institutionalize a response to a crisis that has already ended.

Ibsen’s answer, refined through multiple drafts and administrative meetings, is that the crisis has not ended. It has changed form. The patients who filled the ward in August 1952 were dying of acute respiratory paralysis. The patients who remain in April 1953 are living with chronic respiratory insufficiency. The students who squeezed bags for the first group have been replaced by machines for the second. But the machines require operators, maintainers, decision-makers. The hand-pump economy has not been abolished; it has been mechanized. The labor that once came from volunteers must now come from employees, with salaries, training, supervision, accountability. The choice is not between the emergency system and normal hospital operations. It is between two kinds of normal: one that incorporates the lessons of the emergency, and one that forgets them.

The argument prevails, partially. In June 1953, Blegdam Hospital formally establishes a Respiratory Care Unit with twelve beds, four dedicated nurses, and rotating medical residents. The unit is not autonomous; it remains administratively part of the infectious disease service. The Engström respirators are installed in a renovated ward, their motors humming where students once sat. The rubber bags are collected, cleaned, and stored in a supply closet. Some are retained for emergency backup; most will deteriorate, unused, until they are discarded in a subsequent reorganization.

The students disperse into their futures. Some enter anesthesia, drawn by the technical challenges they first encountered in the polio ward. Others pursue general practice, carrying with them the memory of what concentrated care can achieve. A few return to Blegdam as physicians, finding the Respiratory Care Unit transformed from the space they knew: cleaner, more orderly, more mechanical, less intimate. They recognize the beds, the tracheostomy tubes, the blood-gas reports, but not the atmosphere. The ward has become professional. The emergency that made professionals of amateurs has been replaced by a system that requires credentials.

The administrative machinery of dismissal operates with a deliberation that mirrors, in its cold formality, the improvised urgency of the original mobilization. Lassen’s memorandum triggers a cascade of departmental notifications: the deans of medicine and dentistry must certify which students have completed sufficient hours to qualify for the ceremonial certificates; the hospital’s personnel office must process the return of student identification badges, the same badges that in August had granted passage through quarantine barriers; the accounting department must close the auxiliary payroll that had paid modest stipends for night shifts. Each step reverses a decision made in haste seven months earlier, when the first students arrived without badges, without payroll classifications, without any bureaucratic existence beyond the immediate recognition of their necessity.

The slowness of this unwinding is itself significant. An institution that could create an army in forty-eight hours requires six weeks to disband it, as if the administrative system, having been stretched beyond its design limits, cannot easily resume its normal elasticity.

The students experience this deceleration as a peculiar limbo. Their clinical rotations have resumed, yet they find themselves drifting back to the ward during free hours, unable to abandon patients whose names and histories they know with an intimacy that their formal medical education has not yet taught them to achieve. A third-year student, assigned to a surgical rotation in March, spends his lunch breaks in the polio ward, not to squeeze bags—the machines have taken that function—but simply to sit with a patient whose weaning process he had supervised through February. The patient, a thirty-year-old carpenter, cannot speak above a whisper through his tracheostomy tube, but the student reads his lips, understands his jokes, knows the names of his children.

This knowledge has no exchange value in the student’s surgical rotation, where patients are presented as cases, as pathologies, as opportunities for technical learning. The ward has taught him something that the curriculum cannot accommodate: that medical care occurs in relationships sustained through time, that the same hands might adjust a ventilator and hold a cup of water, that the boundary between therapy and companionship dissolves in practice.

The formal ceremony of April 10, 1953, attempts to render these unacknowledged learnings into recognizable form. Lassen’s statement from the Ministry of Health emphasizes sacrifice, discipline, national service—the same vocabulary that had mobilized the students in August, now repurposed for conclusion. The certificates, printed on heavy paper with embossed seals, borrow the visual language of academic degrees and military commendations. Yet the numbers they record resist interpretation. Five hundred hours of bag-squeezing: does this represent clinical training, charitable labor, or some unprecedented hybrid? The students receive them in silence, aware that they are being thanked for work that has no proper name.

Afterward, in the corridors, the awkwardness of return to normalcy manifests in small rituals. Students who had shared twelve-hour shifts without learning each other’s full names now exchange addresses with the urgency of people who suspect they will not meet again, who recognize that the conditions that created their solidarity cannot be reproduced. Some promise to organize reunions; none occur. The categorical uncertainty that defined their service—neither nurse nor physician nor technician—extends into their futures. They have been, briefly, something that the professional structure of medicine has no place for.

The machines arrive in this atmosphere of unresolved transition. The Engström respirators, freighted from Stockholm through arrangements negotiated between Ibsen and Carl-Gunnar Engström during the winter, represent not simply technological replacement but conceptual translation. Where the students had provided breath through direct physical effort, the machines provide it through calibrated mechanics; where the students had adjusted to individual patients through continuous sensory feedback—the resistance of the bag, the movement of the chest, the sound of air—the machines require preset parameters translated from blood-gas measurements. The first installations, in early April, occur while students still occupy some beds. The juxtaposition is instructive: a student squeezing a bag beside a machine whose motor runs with unvarying rhythm, each system producing the same physiological effect through radically different means. Nurses observe both, noting that the machines do not tire, do not vary, do not develop attachments.

Kaj Vårum, who squeezed the last manual breaths in March, graduates in 1954 and emigrates to Canada. In a letter written decades later, he describes the experience as the most significant yet least discussable of his medical education. The skills he acquired—reading a chest, timing a breath, recognizing the moment when assistance becomes interference—had no place in the curriculum. The patients he remembers, the ones who lived and the ones who died, were not his cases. They belonged to no one’s case series; the student volunteers were not authors of the published reports. Their names appear only in the hospital’s internal records, in the logbooks where shifts were recorded, in the certificates that most have lost.

The stored bag respirators, pushed to the back of a supply closet, settle into the institutional memory as an embarrassment and a promise. The embarrassment is that a modern hospital required such primitive means. The promise is that ordinary hands, properly organized, could substitute for missing machines.

The closet door stays closed through the 1950s, opened only for inventory. When the Respiratory Care Unit expands in 1958, the bags are moved to a basement storage area, then forgotten. A maintenance crew discovers them in 1967, cracked and perished, and discards them without ceremony. By then the unit has become something else entirely: not a polio ward but an intensive care unit, with mechanical ventilators in every room, with trained respiratory therapists on round-the-clock duty, with protocols and checklists and quality metrics. The transformation is complete. The human engine that sustained the first phase has been replaced by professional staff and machines. The vacuum of labor has been filled. What remains is the question of whether the new system can generate the same urgency, the same collective commitment, the same willingness to improvise when the protocols fail.