Inhalation of high concentrations of chlorofluorocarbon refrigerants (CFCs) may result in which of the following?

Inhalation of high concentrations of chlorofluorocarbon refrigerants (CFCs) can impact the central nervous system, leading to symptoms such as drowsiness, loss of concentration, and cardiac arrhythmias. CFCs are a group of man-made compounds that can displace oxygen in the environment and lead to hypoxia, which can cause confusion and impaired cognitive function. The inhalation of these refrigerants may also impact heart rhythms, resulting in arrhythmias due to their effects on the body's physiological responses. This makes drowsiness, loss of concentration, and cardiac arrhythmias the appropriate symptoms associated with the high concentration exposure to CFCs.

Other potential symptoms, such as headaches or skin irritations, may occur under different exposure conditions but are not primarily linked to high concentrations of CFCs. Understanding the effects of these substances is vital for safety in environments where CFCs are used or stored.