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Biomedical subjects

M B Habal

Publications and source records attributed to M B Habal.

At least 145 records · Page 8Linked to original sources
PubMed1978

Clinical observations on the isolated optic nerve injury.

The optic nerve can be injured indirectly by blunt trauma to the frontoorbital region. The mechanism of injury is related to trauma of the nerve in the tight, bony optic canal. Neurovisual transmission in the canal is interrupted by pressure on the nerve. The conventional management includes careful observation and supportive treatment. Recent interest in this unique clinical problem has prompted the development of new techniques to decompress the injured optic canal extracranially; these approaches have produced encouraging results. Another dividend of the method has been the mapping of the optic nerve region under magnification using the operating room microscope. Any gain of vision, partial or complete, is well appreciated by the patient and the physician.

Craniocerebral Trauma↗
PubMed1978

Repair of major cranio-orbital defects with an elastomer-coated mesh and autogenous bone paste.

We present a method for repairing defects in the craniofacial region in which an elastomer-coated mesh is used as a template with bone paste. The method was developed by animal experimentation first, and then successfully used in the maxillofacial and mandibular regions. We have used this method to repair 16 craniofacial defects with satisfactory results, and complications have been kept to a minimum.

Adolescent↗
PubMed1978

Microanatomy of the optic canal.

The human optic canal, an intricate anatomical structure with several normal variations, was studied in 83 individual cadaver specimens. The landmarks and dimensions of the adjacent structures were noted and correlated with surgical exposure of the area. The transorbital-ethmoidal route for extracranial decompression of the optic canal was also studied.

Humans↗
PubMed1978

The burned hand: a planned treatment program.

A planned treatment program for burned hands has been developed and was used in 72 burns of the dorsum of the hands. Treatment was individualized on the basis of whether hand burns were superficial or deep. In the former, there was evidence of spontaneous reepithelialization within 14 to 21 days. In the latter, immediate or delayed excision, followed by resurfacing with autografts was done. Both groups received topical antibiotic creaming, elevation, an exercise program as soon as they were able, and splinting of the burned hand in the antideformity position. Hypertrophic scars and unacceptable epithelium were excised when they interfered with function. Initially, this program allowed us to avoid unnecessary surgical procedures in 94% of the second-degree burns of the dorsum of the hand. The third-degree burned hand needed excision and autografting in 100% of the burned hands. This treatment program has as its goals: prevention of deformity by early motion and protection of the unburned and regenerating epithelium by creaming with topical antibiotic ointment.

Burns↗
PubMed1978

Rapid access airway: surgical device and technique.

A simple, inexpensive, readily assembled device that provides immediate temporary access to the subglottic airway for oxygenation or anesthesia induction has been presented. The device can be used in emergency clinical situations, in difficult anesthesia inductions and in children where it is difficult to introduce an endotracheal tube because of supraglottic disorders. The child can be anesthetized via this device prior to securing the airway by tracheostomy. There has been no morbidity or mortality associated with use of this device.

Airway Obstruction↗
PubMed1977

Reconstitution of craniofacial osseous contour deformities, sequelae of trauma and post resection for tumors, with an alloplastic-autogenous graft.

Our experience using a new technique for reconstructing contour defects of facial bones has been presented. It employs particulate, cancellous bone and an implantable prosthesis accurately fabricated of polyether urethane and polyethylene terephthalate cloth mesh which can be produced in a variety of configurations. A mannequin made of these materials displaying the various parts of the craniofacial complex that have been restored or are currently under investigation is shown in Figure 10. Large cranial vault defects, orbital floors, mandibles including chin augmentation, and nasal bone deformities have been successfully restored in man. Restoration of the pinna of the ear is currently being evaluated in laboratory animals.

Adolescent↗
PubMed1977

Inhibition of experimental tumor growth in hamsters by small direct currents.

The effect of three electric current levels (3 mamp, 500 micronamp, and 960 mmicronamp) on the growth of A-Mel-4 tumor was evaluated in hamsters as a mode of therapy. Direct current (dc) was applied for one hour a day from the third to sixth posttumor implant day by the introduction of a shielded point electrode directly into the tumor site. Tumor growth was inhibited, and metastases were reduced in the exposed animals. The higher dl levels produced necrosis in the tumors, and in several animals, the implantation site tumor was completely destroyed. These effects were most pronounced with the positive electrode.

Animals↗
PubMed1977

Tension free closure of large meningomyelocele defects.

A technique for closing large meningomyelocele defects without tension has recently been developed by the authors. The technique utilizes bilateral bipedicle flaps developed from verticle flank incisions. The bipedicle flaps are advanced medially and approximated in the midline. The lateral defects created by this maneuver are closed transversely. The outer margins of the bipedicle flaps are left free until the flaps become adherent to the underlying tissue. This technique has been used in the repair of 12 large meningomyeloceles. The width of the average lesion was 6-7 centimeters, the largest lesion was 11 centimeters. In each case the width of the lesion exceeded one-half the width of the back. In all cases a tension free closure was achieved. There were no significant wound complications. The use of this technique has greatly facilitated the treatment of children with large meningomyelocele defects.

Humans↗
PubMed1977

Complications of closed capsulotomies after augmentation mammaplasty.

In a series of patients who underwent closed rupture of fibrous capsules surrounding mammary prostheses, 3 patients developed hematomas or rupture of the implant, with or without infection. These complications and their management are discussed. Closed capsulotomy is a valuable procedure, simple to apply and easy to learn, but it is not devoid of complications.

Adult↗