Usage Note
Respiratorio is a medical and anatomical adjective describing anything related to breathing — sistema respiratorio (respiratory system), vías respiratorias (airways), insuficiencia respiratoria (respiratory failure). It does not change for gender: el aparato respiratorio, la función respiratoria. The base verb is respirar (to breathe).
Examples
"El médico revisó el sistema respiratorio del paciente."
Natural Translation
The doctor examined the patient's respiratory system.

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