Final answer:
The nasal speculum is used for examining the nasal passages. Blades are inserted a few centimeters into the nostril and then expanded, with the speculum type chosen based on provider preference and patient's nostril size.
Step-by-step explanation:
The purpose of a nasal speculum is to allow medical professionals to inspect the inside of a patient's nostrils and the nasal passages. During an examination or procedure, the blades of the nasal speculum are gently inserted into the nostril to a depth that is comfortable for the patient, typically a few centimeters. It is important not to insert the blades too deeply as this can cause discomfort or injury. Once the blades are properly positioned, the speculum is then expanded, which allows the healthcare provider to have a clear view of the nasal cavity for examination, diagnosis, or to perform certain procedures.
There are various types of nasal speculums, and the choice of speculum can vary based on the provider's preference, the nature of the examination, and the size of the patient's nostrils. Some common types include the Hartmann, Vienna, and Killian speculums. Selection of a speculum should ensure that it fits comfortably within the patient's nasal anatomy and provides adequate visualization.