The effect of decongestion on nasal airway patency and airflow.

Nasal decongestant reduces blood flow to the nasal turbinates, reducing tissue volume and increasing nasal airway patency. This study maps the changes in nasal anatomy and measures how these changes affect nasal resistance, flow partitioning between superior and inferior cavity, flow patterns and wall shear stress. High-resolution MRI was applied to capture nasal anatomy in 10 healthy subjects before and after application of a topical decongestant.

Lip Augmentation Using Hyaluronic Acid Filler and a 4-mm Needle: A Safer, More Natural, and Predictable Approach.

Clinicians employ several techniques to augment lips with hyaluronic acid (HA) filler. To the best of our knowledge, however, no previous study has documented the use of a 4-mm 30-gauge needle in this context. This paper describes the anatomical rationale behind and practical application of such a needle applied very superficially in the vermillion border during lip augmentation.

Assessing Changes in Airflow and Energy Loss in a Progressive Tracheal Compression Before and After Surgical Correction.

The energy needed to drive airflow through the trachea normally constitutes a minor component of the work of breathing. However, with progressive tracheal compression, patient subjective symptoms can include severe breathing difficulties. Many patients suffer multiple respiratory co-morbidities and so it is important to assess compression effects when evaluating the need for surgery.