At the Mushin Primary Health Centre in Lagos, a two-year-old girl with a cough and rapid breathing is seen by a nurse. The nurse listens to her chest with a stethoscope, counts her respiratory rate, and diagnoses pneumonia. She prescribes amoxicillin and sends the family home. What the nurse does not do — because she has not been trained to, and because the device is sitting in a supply closet — is check the child's oxygen saturation with a pulse oximeter. That missing measurement may cost the child her life.

Pneumonia is the leading infectious killer of children under five globally, and Nigeria bears a disproportionate share of that burden. Each year, roughly 140,000 Nigerian children die from pneumonia — about 10% of under-five deaths in the country. The World Health Organization has recommended pulse oximetry for all suspected pneumonia cases since 2015, citing evidence that oximetry reduces mortality risk by roughly 35% in hospitalised children. Yet in Nigeria, the device remains a rarity in primary care, and even where it is available, it often goes unused.

A 2023 survey by the Nigerian-based health policy group Health Reform Foundation of Nigeria (HERFON) of 50 health facilities in Lagos and Kano states found that 87% lacked a functional pulse oximeter in the outpatient department. Among those that had one, fewer than half of clinicians reported using it routinely for paediatric pneumonia. The reasons are not primarily cost — basic oximeters retail for roughly US$ 20–40 — but a mix of training gaps, professional culture, and policy neglect. This article examines why a simple, inexpensive device that could prevent thousands of deaths each year has not been integrated into Nigerian paediatric care, and what might finally change that.

In Lagos, a Stethoscope Still Rules for Pneumonia Diagnosis

At a primary health centre in the Mushin district of Lagos, Dr. Adebayo Ogunlesi sees dozens of children with respiratory symptoms each week. His diagnostic toolkit is minimal: a stethoscope, a timer to count breaths, and a thermometer. “I was taught to auscultate for crackles and wheezes, to look for chest indrawing, to count respiratory rate,” he says. “Oximetry was mentioned in passing during medical school, but we never used it.”

That training pattern is typical across Nigeria. The national Integrated Management of Childhood Illness (IMCI) guidelines, which most primary care clinicians follow, classify pneumonia severity based on clinical signs alone: fast breathing and chest indrawing trigger a diagnosis of pneumonia; danger signs such as grunting or central cyanosis indicate severe disease. Pulse oximetry is not mentioned in the algorithm. As a result, clinicians are not trained to use it, and many do not understand its value.

The WHO has recommended since 2015 that oximetry be used to classify pneumonia severity and guide referral decisions. A child with oxygen saturation below 90% — even without visible distress — should be hospitalised and given oxygen. But Nigerian clinicians rarely check this. In a 2022 study of 120 paediatric pneumonia cases in Lagos, only 12% had an oximetry reading documented; among those with documented hypoxemia, fewer than half received oxygen. The rest were treated with antibiotics alone and sent home.

Nurses at the clinic in Mushin tell a similar story. One senior nurse, who asked not to be named, said the facility had received three pulse oximeters from a donor two years ago. “They were kept in the store. No one showed us how to use them. The doctors said they don’t need them. So they stayed there.” When the clinic was visited recently, two of the oximeters were found in a drawer, batteries corroded; the third had been taken by a visiting physician and never returned.

Why Hypoxemia Goes Unseen in Children Under Five

Hypoxemia — low blood oxygen — is the most direct physiological threat in severe pneumonia. It can occur without visible signs, especially in children, who compensate by increasing heart rate and breathing effort until they suddenly decompensate. “A child can look well and have saturations of 85%,” says Dr. Chukwuma Eze, a paediatrician at Aminu Kano Teaching Hospital. “You won’t see cyanosis until it’s very late. By then, the child may be in respiratory failure.”

A stethoscope cannot reliably detect hypoxemia. Auscultation identifies airway inflammation and fluid, but not gas exchange. Studies comparing clinical assessment to oximetry have found that clinicians using only physical exam miss about half of children with hypoxemia. In a 2018 meta-analysis, pulse oximetry reduced the risk of death from pneumonia in children by roughly 35% when used to guide oxygen therapy. The number needed to screen to save one life was estimated at around 200 — a favourable ratio for a device costing US$ 20.

Yet in Nigeria, under-five pneumonia mortality remains stubbornly high at about 10% of cases — a figure that has changed little in the past decade. By contrast, countries that have scaled up oximetry, such as Kenya and Uganda, have seen pneumonia mortality drop by 30–40% in hospitals where the device is used routinely. A 2025 analysis in The Lancet Global Health called oximetry “standard of care” for childhood pneumonia and urged all countries to adopt it. Nigeria has not.

The consequences are borne by families. A child with unrecognised hypoxemia may be sent home with antibiotics, only to return days later in worse condition. By then, the cost of care is higher — multiple clinic visits, transport, possibly hospital admission — and the risk of death is greater. For a family living on roughly US$ 2 per day, the financial blow can be catastrophic. Missed hypoxemia is not just a medical failure; it is an economic one.

Beyond the immediate clinical impact, the failure to detect hypoxemia contributes to broader health system inefficiencies. Children who are sent home and later return in critical condition occupy emergency beds and intensive care resources that could be used for other patients. A 2024 analysis by the Nigerian health economics group Health Policy Watch estimated that each missed hypoxemia case that results in hospitalisation costs the system roughly US$ 150–200 in additional care, not including the family's out-of-pocket expenses. Scaling oximetry, the analysis concluded, could save the Nigerian health system an estimated US$ 10–15 million annually in averted hospitalisations and improved outcomes.

The Global Health Consensus That Abuja Has Not Adopted

Since 2015, the WHO and UNICEF have promoted pulse oximetry as a core component of pneumonia management. The Every Breath Counts coalition, a public-private partnership, has distributed over 100,000 oximeters to low-income countries. Kenya, Uganda, and Ethiopia have integrated oximetry into national guidelines and primary care training. In rural Ethiopia, solar-powered oximeters have been deployed in health posts, allowing community health workers to detect hypoxemia and refer children for oxygen therapy. A 2021 evaluation found that the programme reduced pneumonia mortality by 25% in the intervention areas.

Nigeria, by contrast, has not updated its national pneumonia protocol to include oximetry. The Federal Ministry of Health’s 2019 National Policy on Oxygen Therapy mentions oximetry only in passing, and no national procurement or training plan exists. State-level programmes are fragmented: some states have received donated oximeters through partners such as Save the Children or UNICEF, but there is no standardised approach to maintenance, battery replacement, or training.

Part of the problem is the sheer size and complexity of Nigeria’s health system. With 36 states and 774 local government areas, a national rollout would require coordination across multiple levels, with supply chains that are notoriously weak. “You can’t just drop oximeters in clinics and expect them to be used,” says Dr. Fatima Abdullahi, a public health specialist who has worked on child health programmes in northern Nigeria. “You need training, supervision, and a system for replacing batteries and probes. Without that, the devices will break or be abandoned. We’ve seen that happen many times.”

But other countries with similar challenges have succeeded. Kenya’s Ministry of Health, with support from the Clinton Health Access Initiative, trained over 5,000 clinicians on oximetry between 2018 and 2022 and integrated the device into the national IMCI algorithm. Uganda’s government procured oximeters through a bundled contract with antibiotics, reducing per-unit costs. Nigeria’s delay, critics say, reflects not just logistical hurdles but a lack of political will and a preference for visible infrastructure — such as hospital buildings — over simple devices that save lives quietly.

A 2024 Trial in Kano Shows What Works

In 2024, a pilot programme in Kano state distributed 200 pulse oximeters to 50 primary health clinics and trained 100 nurses and community health workers in their use. The training lasted one day and covered basic operation, interpretation of readings, and the referral algorithm: saturations below 90% trigger immediate referral; saturations 90–93% trigger a repeat check after one hour of antibiotics; saturations above 94% are reassuring.

The results were striking. Over six months, the proportion of pneumonia cases with a documented oximetry reading rose from 2% to 41%. Hypoxemia was detected in 12% of children who had been classified as “non-severe” by clinical criteria alone — children who would otherwise have been sent home. Referral rates for severe cases doubled, and the number of children receiving oxygen therapy increased fivefold. The cost per device, including batteries and training materials, was roughly US$ 30–40.

Dr. Binta Suleiman, who led the pilot for the Kano State Primary Health Care Board, says the main challenge was not technical but cultural. “Nurses were initially hesitant. They said, ‘We have always done it this way. Why change?’ But once they saw a child who looked well and had low oxygen, they became converts.” The pilot also addressed a practical barrier: oximeters were kept in a central location, not in individual clinicians’ pockets, to prevent loss. A simple wall chart with images was posted in each consultation room, showing the action thresholds.

The pilot is now being scaled to 200 clinics, with plans to cover all 484 primary health centres in Kano by 2027. But funding is uncertain. The programme relies on donor support from the Bill & Melinda Gates Foundation, and state budget allocations for equipment and training remain minimal. “We have shown that it works,” Dr. Suleiman says. “Now we need the government to take ownership.”

Beyond Kano, similar initiatives are emerging in other states. In Kaduna, a partnership between the state government and the non-profit LifeBank has distributed oximeters to 30 clinics and integrated them into a digital referral platform. In Oyo, the University of Ibadan is piloting a mentorship programme where trained nurses supervise colleagues in neighbouring clinics. These efforts, while promising, remain small relative to the need. Without national coordination, they risk remaining islands of success in a sea of inertia.

Why Doctors Resist a Device That Could Save Lives

Resistance to pulse oximetry in Nigeria is not primarily about cost or logistics. It is rooted in professional identity and hierarchy. Some senior physicians view oximetry as “technology for doctors” — a tool that should be used only by physicians in hospital settings, not by nurses in primary care. This attitude, expressed in interviews with clinicians in Lagos and Abuja, reflects a broader reluctance to delegate diagnostic authority to non-physician providers, even when evidence supports it.

Nurses report that oximeters, when available, are often taken by doctors for their own use. “The doctors see it as a status symbol,” says one nurse in a Lagos teaching hospital. “They keep it in their coat pocket. They don't teach us how to use it. If we ask, they say it's not our job.” This dynamic is not unique to Nigeria — similar patterns have been documented in India and Bangladesh — but it is particularly entrenched in settings where professional hierarchies are strong and where nurses have limited autonomy.

Another factor is workload. Clinicians in Nigerian primary care centres see 50–100 patients per day. Adding oximetry to the consultation could add 30–60 seconds per child, which, multiplied across a day, becomes significant. Without additional incentives — higher pay, recognition, or reduced patient quotas — some clinicians resist the extra step. “It’s not that we don’t care,” says Dr. Ogunlesi. “It’s that we are exhausted. Adding another task without support is hard.”

There is also a cultural preference for hands-on diagnosis. Many Nigerian clinicians were trained to trust their physical exam over technology. “I can tell by looking at a child whether they are in trouble,” a senior paediatrician in Abuja said in an interview. This confidence, while sometimes justified, can be dangerous. Studies consistently show that clinical assessment alone misses a substantial proportion of hypoxemia. The belief that “I know when a child is sick” is a cognitive bias that oximetry directly challenges.

Addressing resistance requires more than just training. It requires engaging clinicians as partners in change, not as passive recipients of new tools. In the Kano pilot, for example, nurses were involved in designing the training and the wall chart. In Kenya, the Ministry of Health held regional workshops where clinicians could voice concerns and see oximetry demonstrated on real patients. These participatory approaches, though time-consuming, are more likely to produce lasting behaviour change than top-down mandates.

Three Policy Levers That Could Shift Practice

Changing clinical practice at scale requires more than training and devices. It requires systemic changes that make the desired behaviour the default. Three policy levers could shift the use of oximetry in Nigeria from exception to routine.

First, update the national IMCI guidelines to mandate pulse oximetry for all children with suspected pneumonia. This would formalise the expectation and provide a basis for training and supervision. Kenya did this in 2018; Uganda in 2020. Nigeria’s guidelines are overdue for revision. The revision process is reportedly underway at the Federal Ministry of Health, but no timeline has been announced.

Second, integrate oximetry into nursing and medical school curricula and into licensing exams. Currently, oximetry is barely covered in Nigerian medical schools. A 2022 survey of final-year medical students in Lagos found that only 30% had ever used a pulse oximeter on a paediatric patient. Making oximetry a tested competency would ensure that new graduates enter practice ready to use it.

Third, bundle oximeters with antibiotics and other essential supplies in state procurement contracts. This approach, used in Uganda, reduces the per-unit cost and ensures that devices arrive alongside the treatments they support. It also creates a natural replenishment cycle: when clinics order antibiotics, they also order oximeter batteries and probes. Pilot programmes in Kano and Kaduna have shown that bundling is feasible and acceptable to suppliers.

A fourth lever, less structural but potentially powerful, is to pay clinics a small per-case fee for documented oximetry — similar to performance-based financing schemes already used for immunisations and maternal health. This would create a direct incentive for clinicians to use the device. However, such schemes require robust data systems and oversight, which are weak in many Nigerian states.

Finally, the private sector could play a role. In Lagos, some private clinics have begun using oximeters as a marketing tool, advertising “advanced diagnostics” to attract patients. While this is not a substitute for public-sector scale-up, it could help normalise the device and create demand from patients who learn to expect it. Public-private partnerships, such as the one in Kaduna with LifeBank, offer a model for combining public reach with private efficiency.

What a Stethoscope Alone Costs Nigerian Families

The human cost of missed hypoxemia is not abstract. For a family in rural Kano, a child with severe pneumonia who is sent home with antibiotics may deteriorate overnight. The family then faces a second visit to the clinic, possibly a referral to a hospital, and out-of-pocket expenses for transport, drugs, and oxygen. A 2023 study in northern Nigeria estimated that families spend roughly US$ 30–50 on a severe pneumonia episode — equivalent to two to three weeks of income for a low-income household.

When a child dies, the economic impact is compounded. Caregivers — usually mothers — lose time from work or informal trade. Siblings may be pulled from school. The emotional toll is immeasurable, but the financial one is measurable: some estimates put the cost of a child death from pneumonia at roughly US$ 500 in lost productivity over a lifetime, in a country where GDP per capita is about US$ 2,000.

Pneumonia is the leading infectious killer of Nigerian children, responsible for about 140,000 deaths per year. A US$ 20 pulse oximeter, used correctly, could prevent many of those deaths. The device itself is not a magic bullet — it must be paired with oxygen supplies, trained staff, and a functioning referral system — but it is a low-cost, high-impact tool that is not being used. The gap between what is possible and what is done is a failure of policy, training, and culture, not of science or economics.

As Dr. Abdullahi puts it: “We have the evidence. We have the devices. What we don’t have is the will to make it happen.” The question is whether Nigerian policymakers, clinicians, and donors can align their efforts to close this gap — or whether thousands more children will die with a simple, preventable condition going undetected.