PubMed Health⌕ Search

Biomedical subjects

A S Hengerer

Publications and source records attributed to A S Hengerer.

26 records · Page 2Linked to original sources
PubMed1980

The diagnosis and treatment of intramuscular hemangiomas of the masseter muscle.

Two cases of hemangioma of the masseter muscle are presented with a review of the literature. The possibility of an intramuscular hemangioma should be considered in any lateral facial swelling, particularly one anterior to the parotid. Total excision of the hemangioma with a margin of normal muscle is recommended. The approach utilized by the authors is a preauricular incision with elevation of a flap lateral to the parotid gland. This provides an excellent exposure for removal of the tumor with minimal risk to the facial nerve and minimal cosmetic deformity.

Blood Vessels↗
PubMedDate not supplied

Injuries to the neonatal larynx from long-term endotracheal tube intubation and suggested tube modification for prevention.

Since the early 1960's nasotracheal tubes have been used for neonates with primary respiratory diseases which necessitated positive pressure ventilation. This therapy may be required for extended periods of weeks to months meaning prolonged trauma to the neonatal larynx. The initial injury and long-term effects of the endotracheal tube in this age group have not been adequately investigated. The acute findings can be arytenoid and posterior commissure ulcerations and, in some cases, cartilage erosion. Long-term follow-up in these children to age 3.5 years showed a persistent arytenoid defect with chronic hoarseness. The consideration of a change in the structure of the endotracheal tube is suggested as a possible means of avoiding these injuries.

Hoarseness↗
PubMedDate not supplied

Anatomic findings and management of choanal atresia and the CHARGE association.

The CHARGE association is a collection of multisystem congenital anomalies including choanal atresia. A review of the literature failed to identify any specific findings that suggested the need to alter the management of choanal atresia in these patients. Our review of 24 patients with choanal atresia managed between 1974 and 1986 identified nine patients with the CHARGE criteria. These nine patients demonstrated a higher prevalence of surgical failures than the patients without the CHARGE association. The reasons are discussed, and computed tomographic scans demonstrate the anatomic findings of a more contracted nasopharynx and narrowed posterior choanal region. Thus, successful repairs require a more radical resection of the posterior nasal septum and lateral bony walls that can be achieved only with a transpalatal approach. The preoperative airways of CHARGE association patients are also at increased risk of obstruction and may require intubation or tracheotomy during the early life of the patient.

Abnormalities, Multiple↗
PubMedDate not supplied

The ultrasonic scalpel in head and neck surgery.

The Cavitron ultrasonic surgical aspiration system (CUSA) is a new surgical tool that has received little attention in head and neck surgery. The device fragments and aspirates tissues with mechanical energy delivered by direct contact with the tip of a transducer vibrating at 23,000 Hz. The potential of the CUSA system was evaluated in several laboratory exercises: superficial parotidectomies on fresh cadavers, subtotal sialadenectomies on cats, and direct application to the brachial plexus in cats to assess effects on peripheral nerves. The CUSA quickly etched away salivary gland parenchyma while grossly preserving nerve, vessel, and fibrous elements, allowing virtually bloodless dissection. Small vessels could be cauterized directly. Direct application of CUSA to peripheral nerves for limited periods produced no significant clinical deficits, although worrisome histologic findings were noted.

Animals↗