Impact of filtering face pieces (FFP3) respiratory protective mask usage on the respiratory functions of informal sector carpenters in Douala: a five-month before-after study.

Introduction: informal sector carpenters in Douala, Cameroon, face potential risks to their respiratory health due to daily exposure to fine particles and wood dust. The study aims to demonstrate the importance of preventing respiratory problems in this population through regular use of filtering face pieces (FFP3) respiratory masks. Methods: the before-after study involved 37 carpenters who wore FFP3 masks during their professional activities for five months. Spirometry measurements were taken before and after the intervention to assess changes in respiratory function. Results: significant improvements were observed in forced vital capacity (FVC) 89.6 % to 95.0 % (p<0.000), forced expiratory volume in one second (FEV1) 88.1 % to 95.0 % (p<0.000), Tiffeneau index 82.4 to 84.9 (p<0.000), and peak expiratory flow (PEF) 6.7 l/s to 7.9 l/s (p<0.000) after mask usage, indicating enhanced lung function. Conclusion: the regular use of FFP3 masks had a positive impact on the respiratory health of informal sector carpenters in Douala, enhancing lung function and reducing airway obstruction. The study highlights the importance of preventive measures to safeguard the respiratory well-being of workers exposed to occupational hazards. Spell out Greek characters (i.e: alpha, beta).

Impact of heavy load activity on cardiovascular system: echocardiographic assessment of informal construction workers heart in Cameroon.

INTRODUCTION: Physiological cardiac hypertrophy and dilation are common findings in heavy physical load activity. We carried out this study to investigate the relationship between construction work and cardiac parameters adaptations, by comparing healthy masons to office workers on heart ultrasound. METHODS: The study was carried out on, 50 construction workers and 50 office workers matched for their weight, height and age. Systolic and Diastolic blood pressures, Left Ventricular diameter and thickness, Septum wall thickness and Left ventricular mass index were measured and calculated. RESULTS: Heart rate, systolic and diastolic blood pressures were lower in construction workers, as compared to office workers: respectively 63±7 bpm vs. 75±6 bpm (p = 0.000); 120.1±7 mmHg vs. 130.5±9 mmHg (p = 0.000) and 68.5±7 mmHg vs. 77.0 ±9 mmHg (p = 0.000). Construction workers had a thicker septum and posterior wall: respectively 10.3 ± 1.1 mm vs. 8.9 ± 0.9 mm (p = 0.000); and 9.0 ± 1.2 mm vs. 8.1 ± 0.8 mm (p = 0.000). CONCLUSION: Conclusion We deducted that heavy load work has an impact on the heart mensuration. The past occupational history has to be taken into consideration during initial medical assessing of a worker in for a new job so as to avoid erroneous conclusions.