Tuberculosis (TB) remains a major public health challenge in Nigeria, which ranks among the countries with the highest burden of the disease globally. Caused primarily by Mycobacterium tuberculosis, the infection mainly affects the lungs but can spread to other parts of the body. Transmission occurs through the air when an infected person coughs, sneezes, or speaks, expelling tiny infectious droplets into the atmosphere. Midwives in Nigerian healthcare facilities encounter TB frequently, often among vulnerable populations such as pregnant women, malnourished children, and individuals living with HIV. Early identification and prompt treatment are essential to breaking the cycle of transmission in crowded community settings and protecting maternal and child health.
When a person inhales airborne droplets containing Mycobacterium tuberculosis, the bacilli reach the terminal alveoli in the lungs. There, alveolar macrophages phagocytize the bacteria, but the organism can resist destruction and multiply inside the cells. This triggers a cell-mediated immune response, leading to the formation of a granuloma or tubercle, which walls off the infection. In many individuals, the immune system successfully contains the bacteria in an inactive state, known as latent tuberculosis infection (LTBI). If the immune system weakens due to malnutrition, pregnancy, or HIV, the granuloma breaks down, releasing active bacteria and causing primary or reactivation tuberculosis.
Pulmonary tuberculosis presents with classical respiratory and systemic signs. Patients typically report a persistent cough lasting more than two weeks, often productive of sputum that may contain blood, a condition called hemoptysis. Systemic symptoms include drenching night sweats, unexplained weight loss, low-grade afternoon fevers, and profound fatigue.
When the infection spreads outside the lungs, it is called extrapulmonary tuberculosis. Common forms seen in clinical practice include:
Accurately diagnosing tuberculosis requires a combination of clinical evaluation and laboratory investigations.
Pharmacological treatment of drug-susceptible tuberculosis involves a standard two-phase regimen lasting six months. The intensive phase runs for the first two months using four drugs: isoniazid, rifampicin, pyrazinamide, and ethambutol. This phase rapidly reduces the bacterial load. The continuation phase lasts for four months, typically using isoniazid and rifampicin to eliminate remaining dormant bacilli.
To prevent treatment failure and drug resistance, the World Health Organization recommends Directly Observed Therapy (DOTS). Under DOTS, a trained health worker or designated treatment supporter watches the patient swallow every single dose. This strategy is critical because stopping medications prematurely leads to multidrug-resistant tuberculosis (MDR-TB), which is extremely difficult and costly to treat.
Midwives and nurses play a vital role in supporting patients through a long course of TB treatment. A comprehensive nursing care plan addresses physical symptoms, nutritional support, and psychological well-being.
Patient education is paramount. Midwives must explain that feeling better after two months does not mean the infection is cured; stopping early invites relapse. Clients need clear guidance on managing common, mild side effects, such as the harmless orange-red discoloration of urine caused by rifampicin. Crucially, patients must know how to report severe adverse effects immediately, such as visual changes from ethambutol or jaundice indicating drug-induced hepatotoxicity from isoniazid or pyrazinamide.
Infection prevention and control (IPC) measures are essential in Nigerian healthcare facilities to protect staff, patients, and visitors from nosocomial transmission of Mycobacterium tuberculosis. Administrative controls include triaging coughing patients rapidly, separating presumptive or confirmed infectious cases, and minimizing waiting times in crowded areas. Environmental controls focus on maximizing natural ventilation by opening doors and windows or using germicidal ultraviolet lamps where appropriate. Personal protective equipment involves supplying N95 or equivalent particulate respirators to healthcare workers caring for infectious patients. Strict adherence to these measures drastically reduces occupational exposure in high-burden settings.