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Biomedical subjects

J S Mertz

Publications and source records attributed to J S Mertz.

5 recordsLinked to original sources
PubMed1991

Congenital nasolacrimal duct cysts in dacryocystocele.

Cystic intranasal masses were found in seven newborn infants with congenital dacryocystocele. The cysts were a direct extension of the nasolacrimal duct, located beneath the inferior turbinate. Nasal obstruction was present in three infants and was severe enough to cause respiratory distress in two neonates with bilateral cysts. Using fiberoptic nasal endoscopy, treatment consisting of probing, irrigation, and marsupialization of the cysts was successful in all infants. The authors believe this rarely reported anomaly is a more common finding in dacryocystocele than previously recognized and advocate careful nasal examination in all infants with congenital dacryocystocele. Early diagnosis and treatment of this condition is critical in the infant with nasal obstruction.

Cysts↗
PubMed1984

Role of the nasal airway in regulation of airway resistance during hypercapnia and exercise. Second-Place Resident Award at 1982 Research Forum.

Posterior mask rhinomanometry was used to measure nasal resistance during exercise and hypercapnia in 10 healthy adult volunteers. Exercise was produced by peddling a stationary bicycle at three loads. Hypercapnia was produced by breathing O2 mixtures containing 5%, 6%, and 8% CO2. The results showed that nasal resistance decreases linearly as expired CO2 levels and exercise levels increase, minute ventilation increases linearly as expired CO2 levels and exercise levels increase, and nasal resistance varies inversely with minute ventilation during both hypercapnia and exercise. The constant relationship between nasal resistance and minute ventilation during hypercapnia and exercise suggests that nasal resistance is regulated by the respiratory center to match the level of respiratory demand.

Adult↗
PubMed1984

Objective evaluation of anterior septal surgical reconstruction.

Fifty patients who underwent nasal septal reconstruction for anterior septal deformities were examined preoperatively and postoperatively with anterior mask rhinomanography. A high degree of correlation was found between the reduction in nasal resistance after operation and the patients' subjective assessment of improvement. Those patients who improved subjectively had a mean decrease in nasal resistance of 1.2 cm H2O/L/sec, whereas those patients who indicated no improvement had a mean increase in nasal resistance of 0.2 cm H2O/L/sec.

Airway Resistance↗
PubMed1983

Lateral rhinotomy. Indications, technique, and review of 226 patients.

Lateral rhinotomy provides excellent exposure of the interior of the nose, the paranasal sinuses, and the nasopharynx with minimal postoperative deformity. A review of 226 lateral rhinotomies performed at the Mayo Clinic, Rochester, Minn, from 1970 through 1979, was made to determine the versatility of this incision and some of its limitations and risks. The suitability of this technique to approach the wide variety of pathologic conditions that occur in the midfacial structures was reaffirmed.

Aged↗