Impact of Interrepetition Rest on Muscle Blood Flow and Exercise Tolerance during Resistance Exercise.

Background and Objectives: Muscle blood flow is impeded during resistance exercise contractions, but immediately increases during recovery. The purpose of this study was to determine the impact of brief bouts of rest (2 s) between repetitions of resistance exercise on muscle blood flow and exercise tolerance. Materials and Methods: Ten healthy young adults performed single-leg knee extension resistance exercises with no rest between repetitions (i.e., continuous) and with 2 s of rest between each repetition (i.e., intermittent). Exercise tolerance was measured as the maximal power that could be sustained for 3 min (PSUS) and as the maximum number of repetitions (Reps80%) that could be performed at 80% one-repetition maximum (1RM). The leg blood flow, muscle oxygenation of the vastus lateralis and mean arterial pressure (MAP) were measured during various exercise trials. Alpha was set to p ≤ 0.05. Results: Leg blood flow was significantly greater, while vascular resistance and MAP were significantly less during intermittent compared with continuous resistance exercise at the same power outputs (p < 0.01). PSUS was significantly greater during intermittent than continuous resistance exercise (29.5 ± 2.1 vs. 21.7 ± 1.2 W, p = 0.01). Reps80% was also significantly greater during intermittent compared with continuous resistance exercise (26.5 ± 5.3 vs. 16.8 ± 2.1 repetitions, respectively; p = 0.02), potentially due to increased leg blood flow and muscle oxygen saturation during intermittent resistance exercise (p < 0.05). Conclusions: In conclusion, a brief rest between repetitions of resistance exercise effectively decreased vascular resistance, increased blood flow to the exercising muscle, and increased exercise tolerance to resistance exercise.

End-to-Trunk Masseteric to Facial Nerve Transfer With Selective Neurectomy for Facial Reanimation.

OBJECTIVE: To examine functional outcomes following end-to-trunk masseteric to facial nerve transfer in patients with chronic flaccid facial paralysis. DESIGN: Retrospective chart review. SETTING: Tertiary-care private practice setting. PARTICIPANTS: Patients with complete unilateral facial paralysis of less than 24 months duration. INTERVENTIONS: Direct end-to-trunk masseteric to facial nerve anastomosis. OUTCOME MEASURES: Outcome measures included time to first movement, development of synkinesis, and an objective assessment of the resting tone and dynamic movement that was achieved. RESULTS: Patient age at the time of transfer ranged from 6 to 61. Follow-up ranged from 12 to 24 months. No patients had any perioperative complications. No patient experienced significant mass movement or synkinetic facial movement with chewing. No patient had worsened chewing or swallowing. Patients have not yet recovered significant resting tone. All patients achieved smile activity when biting down with a median (interquartile range) oral commissure excursion of 7.57 mm (5.19-9.94 mm), starting 3 to 5 months after transfer. CONCLUSIONS: End-to-trunk masseteric to facial nerve transfer is a safe and effective procedure. Patients had rapid reinnervation with good excursion and achieved a natural appearing smile. The rehabilitated smile appears better than that achieved with hypoglossal-facial nerve transfer. The procedure can be performed coincident with cross-facial nerve grafting, and in some cases may produce dynamic facial movement that obviates the need for free muscle transfer.

Indices of leg resistance artery function are independently related to cycling V̇O2 max.

PURPOSE: While maximum blood flow influences one's maximum rate of oxygen consumption (V̇O2 max), with so many indices of vascular function, it is still unclear if vascular function is related to V̇O2 max in healthy, young adults. The purpose of this study was to determine if several common vascular tests of conduit artery and resistance artery function provide similar information about vascular function and the relationship between vascular function and V̇O2 max. METHODS: Twenty-two healthy adults completed multiple assessments of leg vascular function, including flow-mediated dilation (FMD), reactive hyperemia (RH), passive leg movement (PLM), and rapid onset vasodilation (ROV). V̇O2 max was assessed with a graded exercise test on a cycle ergometer. RESULTS: Indices associated with resistance artery function (e.g., peak flow during RH, PLM, and ROV) were generally related to each other (r = 0.47-77, p < .05), while indices derived from FMD were unrelated to other tests (p < .05). Absolute V̇O2 max (r = 0.57-0.73, p < .05) and mass-specific V̇O2 max (r = 0.41-0.46, p < .05) were related to indices of resistance artery function, even when controlling for factors like body mass and sex. FMD was only related to mass-specific V̇O2 max after statistically controlling for baseline artery diameter (r = 0.44, p < .05). CONCLUSION: Indices of leg resistance artery function (e.g., peak flow during RH, PLM, and ROV) relate well to each other and account for ~30% of the variance in V̇O2 max not accounted for by other factors, like body mass and sex. Vascular interventions should focus on improving indices of resistance artery function, not conduit artery function, when seeking to improve exercise capacity.

Neurologic late effects associated with radiologic evidence of vertebral osteoradionecrosis after salvage laryngectomy: A syndrome associated with survivors of laryngeal and hypopharyngeal cancer.

BACKGROUND: Delayed nonspecific posterior neck pain after pharyngeal instrumentation can be associated with a syndrome of rapidly progressive neurologic embarrassment. We present this cohort to help define the syndrome and aid in early detection. METHODS: We conducted a retrospective case series of 6 patients presenting from 2003 to 2012 with a history of laryngeal or hypopharyngeal squamous cell carcinoma (SCC) who underwent radiotherapy (RT) or chemoradiotherapy (CRT) followed by salvage laryngectomy. RESULTS: Posterior neck and upper back pain developed a mean of 27.5 days after instrumentation of the pharynx (reconstruction after laryngectomy or pharyngeal dilation). Myelopathy developed an average of 21.5 days after the onset of posterior neck pain. Five patients required urgent decompression. Three patients developed quadriplegia. The disease-specific mortality was 50%. CONCLUSION: There is a syndrome of late neurological effects after RT, salvage surgery, and pharyngeal instrumentation that is associated with high morbidity and mortality. © 2016 Wiley Periodicals, Inc. Head Neck 38:1187-1193, 2016.

New insights into physical findings associated with postblepharoplasty lower eyelid retraction.

BACKGROUND: Postblepharoplasty lower eyelid retraction (PBLER) has been linked to anterior lamellar shortage, unaddressed eyelid laxity, and middle lamellar scarring. The authors believe there are other, less-appreciated physical findings (orbicularis weakness, negative-vector eyelid, and inferior eyelid/orbit volume deficit) that also influence the development and potentially the management of this complex type of eyelid malposition. OBJECTIVES: To better understand PBLER, potentially prevent its development, and improve treatment options, the authors determined the incidence of various physical findings present on initial examination of patients referred for PBLER revision. METHODS: The medical charts of patients referred for PBLER revision over a 21-month period were reviewed. The presence of anterior lamellar shortage, lower eyelid laxity, and a middle lamellar (internal eyelid) scar was documented. Orbicularis weakness, negative-vector eyelid topography, and volume deficiency of the lower eyelid/inferior orbit also were noted. The incidence of each finding was calculated. RESULTS: Forty-six patients (35 women, 11 men) were included. All patients had undergone primary transcutaneous surgery, which led to the eyelid retraction. Orbicularis weakness, anterior lamellar shortage, inferior eyelid/orbital volume deficit, negative-vector eyelid topography, and eyelid laxity were common. A middle lamellar scar of significance was found in only 17% of eyelids. CONCLUSIONS: The data suggest that the aforementioned underappreciated findings are common in patients with PBLER. Evaluating these factors when planning primary blepharoplasty may reduce the incidence of PBLER. Awareness of these findings when planning revisional procedures may improve surgical outcomes. LEVEL OF EVIDENCE: 4.

The minimally invasive, orbicularis-sparing, lower eyelid recession for mild to moderate lower eyelid retraction with reduced orbicularis strength.

IMPORTANCE Identifying a procedure to address lower eyelid retraction (LER) in the presence of an orbicularis deficit is a useful tool for aesthetic and reconstructive eyelid surgery. OBJECTIVE To describe and evaluate a surgical technique consisting of a closed canthal suspension and true lower eyelid retractor recession to address LER in the setting of orbicularis weakness. DESIGN, SETTING, AND PARTICIPANTS A retrospective medical record review of patients who underwent the minimally invasive, orbicularis-sparing, lower eyelid recession from January 1, 2010, to October 1, 2012, by one of us (G.G.M.) in an ophthalmic plastic surgical practice. We included 29 patients with reduced orbicularis strength and LER resulting from eyelid paresis related to facial nerve disease, surgical trauma (after blepharoplasty), involutional change, or idiopathic causes. INTERVENTIONS Surgical intervention consisting of closed canthal suspension and lower eyelid retractor recession. MAIN OUTCOMES AND MEASURES Surgical results, complications, and patient satisfaction. RESULTS The 29 patients included 18 women and 11 men. The mean patient age was 52 (range, 6-72) years; mean follow-up, 11 (range, 6-21) months; and mean preoperative orbicularis strength, 2.7 (on a scale of 0-4, where 0 indicates no function and 4, normal function). The causes of orbicularis weakness included eyelid paresis related to facial nerve disease (11 patients), surgical trauma (13 patients), involutional change (4 patients), and an isolated idiopathic finding (1 patient). In 12 patients, the eyelid retraction was unilateral; in 17, bilateral. A small tarsorrhaphy was added to the surgery in 6 patients with facial nerve disease. The mean eyelid elevation after surgery was 1.80 mm, with only minor complications. Patient and surgeon satisfaction were high. CONCLUSIONS AND RELEVANCE Recent publications have demonstrated the utility of closed canthal suspension and true lower eyelid retractor recession as separate procedures. In the setting of LER with reduced orbicularis strength and/or tone, the techniques can be combined to recess the lower eyelid without disturbing the already compromised lower orbicularis muscle (minimally invasive, orbicularis-sparing, lower eyelid recession). The combination technique is safe and effective and yields excellent results. LEVEL OF EVIDENCE 4.

Interpolated subcutaneous fat pedicle melolabial flap for large nasal lining defects.

Full-thickness nasal deformities are a reconstructive challenge. Restoration of a reliable internal lining is critical for a successful reconstruction. Septal hinge flaps are the workhorse for internal lining defects. However, these and other intranasal mucosal flaps are sometimes unavailable due to prior harvest or previous oncologic resection. We present the two-stage interpolated subcutaneous fat pedicle melolabial flap for lining large defects when traditional intranasal flaps are unavailable. This approach is particularly useful when one forehead flap has already been expended, preserving the patient's remaining forehead tissue for external cover.

Ideal female brow aesthetics.

The concept of the ideal female eyebrow has changed over time. Modern studies examining youthful brow aesthetics are reviewed. An analysis of ideal female brow characteristics as depicted in the Western print media between 1945 and 2011 was performed. This analysis provided objective evidence that the ideal youthful brow peak has migrated laterally over time to lie at the lateral canthus. There has been a nonstatistically significant trend toward lower and flatter brows. These findings are discussed in relation to current concepts of female brow aging, with repercussions regarding endoscopic brow lift and aesthetic forehead surgery.

Outcomes following V-Y advancement flap reconstruction of large upper lip defects.

OBJECTIVE: To characterize revision surgery following V-Y subcutaneous tissue pedicle advancement flap repair of large upper lip skin defects. METHODS: Retrospective review of upper lip skin defects at least 3.0 cm(2) in area that were reconstructed with a V-Y subcutaneous tissue pedicle advancement flap at an academic tertiary care center. Depth and area of the defect, as well as involvement of the vermilion and nasal ala, were recorded as independent variables. Revision techniques were analyzed to identify patterns. RESULTS: Thirty patients were identified as having upper lip skin defects with a mean (range) area of 7.0 (3.0-14.0) cm(2) (median, 6.25 cm(2)). The defect involved the nasal ala in 4 cases and the vermilion in 3 cases. At least 1 revision surgery was performed in 14 patients (47%). Alar or vermilion involvement was a significant factor in revision by χ(2) analysis (P = .03). Larger defect size did not predict a need for revision, even among cases where the defect did not involve the ala or vermilion (P = .68). CONCLUSIONS: Reconstruction of large upper lip skin defects with a V-Y subcutaneous tissue pedicle advancement flap is associated with a 47% revision rate, and when the defect involves the ala or vermilion, the revision rate is increased. Defect size alone cannot be used to predict the need for revision surgery. Revision techniques are demonstrated.

Outcomes following temporalis tendon transfer in irradiated patients.

OBJECTIVE: To compare objective outcomes and complications following temporalis tendon transfer in patients with and without a history of radiation to the parotid bed. METHODS: Retrospective medical chart review comparing dynamic movement of the oral commissure and resting symmetry achieved in 7 irradiated patients (group R) and 7 nonirradiated patients (group N) after temporalis tendon transfer for unilateral facial paralysis. RESULTS: There were no significant differences between the 2 groups of patients in terms of age, additional facial reanimative procedures, baseline lip position, or follow-up time. Postoperatively, good resting symmetry was achieved in both groups. The mean commissure excursion was significantly inferior in the irradiated group of patients (-1.5 mm in group R vs 2.1 mm in group N; P < .05). Two patients in the irradiated group experienced surgical site infections requiring hospital admission and eventual debridement of their tendon transfers. CONCLUSIONS: Temporalis tendon transfer seems to produce less dynamic movement in patients who have received radiation to the parotid bed, and these patients may also be at higher risk of postoperative infection. Temporalis tendon transfer can achieve good resting symmetry in both irradiated and nonirradiated patients.

A new member of the multidisciplinary ALS team: the otolaryngologist.

The multidisciplinary approach to treatment of amyotrophic lateral sclerosis (ALS) has improved the overall care of patients suffering from this disease ( 1 , 2 ). This approach typically has included neurologists, physiatrists, occupational therapists, respiratory therapists and speech therapists. Dysphonia, dysarthria, and dysphagia are three of the most common bulbar manifestations of ALS, and are often the presenting symptoms in bulbar-onset patients. Despite this, otolaryngologists are often not included in ALS management until a tracheostomy is considered. The otolaryngologist can play an important role in early diagnosis and subsequent management of bulbar manifestations of ALS, and would be a valuable member of the multidisciplinary team.

Validity and efficacy of a pediatric airway foreign body training course in resident education.

OBJECTIVES: We evaluated the validity and efficacy of a pediatric airway foreign body simulation for otolaryngology resident training. METHODS: We created a course using a high-fidelity toddler mannequin designed to instruct and evaluate otolaryngology residents in pediatric airway foreign body management. Seven junior and 5 senior residents participated. Their performance was evaluated by 2 observers using an Objective Structured Assessment of Technical Skills (OSATS) instrument. RESULTS: By the third trial, all junior and senior residents scored a proficiency level of "independent without errors" or "independent and efficient," and the performance of the junior residents was not different from that of the senior residents. After completing the course, the junior residents self-rated their abilities as commensurate with those of a senior resident, and senior residents rated themselves capable of performing foreign body extraction without supervision. All participants felt that the course and simulator had good overall realism and a realistic feel, demonstrating face validity. Perhaps most importantly, the residents' highest ratings were for "facilitated management of complications" and "facilitated working with the operating room team"--areas difficult to teach during live surgical procedures. CONCLUSIONS: This pediatric airway foreign body course using a high-fidelity simulator has face and construct validity, and results in statistically improved performance and self-evaluation of all participants.

Campomelic dysplasia: airway management in two patients and an update on clinical-molecular correlations in the head and neck.

Campomelic dysplasia is a rare and historically lethal skeletal dysplasia with a variable but recognizable phenotype; it affects the long bones and is associated with a variety of head and neck anomalies. Mutations in or around the SOX9 gene have been identified as the molecular origin in most patients. We briefly present 2 children who meet the diagnostic criteria for campomelic dysplasia to illustrate the various clinical manifestations. Many patients with campomelic dysplasia have airway obstruction at multiple levels. We describe our approach to managing the airway in these patients, and review recent advances in understanding how SOX9 mutations lead to the spectrum of abnormalities seen in the head and neck.

Potential of an electric prosthesis for dynamic facial reanimation.

Chronic facial paralysis is a devastating condition with severe functional and emotional consequences. The current surgical armamentarium permits the predictable reestablishment of a protective blink as well as good resting symmetry. Yet the ultimate goal of symmetric, spontaneous emotional expression remains elusive despite significant progress in the areas of peripheral nerve grafting and free tissue transfer. This commentary explores the possibility of an implantable electrical prosthesis for facial reanimation. It reviews animal studies supporting this concept as well as recent human data suggesting that such an implant could rescue denervated facial musculature, thus overcoming a major hurdle for existing reanimation techniques.

Transmastoid labyrinthectomy for disabling vertigo in a patient with internal auditory canal pathology.

OBJECTIVE: Document the use of transmastoid labyrinthectomy to treat disabling vertigo secondary to a lesion in the internal auditory canal. PATIENT: A 69-year-old man with nonserviceable left hearing experienced disabling attacks of vertigo refractory to medical measures. Magnetic resonance imaging revealed a small left intracanalicular lesion with an irregular configuration and modest enhancement, suggesting either an unusual acoustic neuroma or a cavernoma. Tumor size remained stable on serial imaging, and the patient declined microsurgical resection, stereotactic radiation, or intratympanic gentamicin therapy. INTERVENTION: Transmastoid labyrinthectomy followed by a customized vestibular rehabilitation program. MAIN OUTCOME MEASURE: Comparison of patient symptoms preoperatively and at 5 and 8 months after surgery. RESULTS: Complete relief of vertigo was achieved, but the patient has moderate imbalance postoperatively. CONCLUSION: Transmastoid labyrinthectomy alone may be a viable treatment option in patients with an internal auditory canal neoplasm causing disabling attacks of vertigo.

Motherhood induces and maintains behavioral and neural plasticity across the lifespan in the rat.

Maternal behavior is multidimensional, encompassing many facets beyond the direct care of the young. Formerly unfamiliar activities are required of the mother. These include behaviors such as retrieving, grouping, crouching-over, and licking young, and protecting them against predators, together with enhancements in other behaviors, such as nest building, foraging, and aggression (inter/intra-species, predatory, etc.). When caring for young, the mother must strike a seemingly lose-lose bargain: leave the relative safety of the nest and her helpless offspring to forage for food and resources where predators await both mother and her vulnerable young, or remain entrenched and safe, thereby ensuring a slow and inexorable fate. Two predictions thus arise from this maternal cost-benefit ratio: first, there may be enhancements in behaviors on which the female relies, for example, predation and spatial ability, used for acquiring food and resources and for navigating her environment. Second, there may be reductions in the fear and anxiety inherent to the decision to leave the nest and to forage in an unforgiving environment where encounters with predators or reluctant/resistant prey await. There is overwhelming support for both hypotheses, with improvements in learning and memory accompanied by a diminution in stress responses and anxiety. The current review will examine the background for the phenomenon that is the maternal brain, and recent relevant data. In sum, the data indicate a remarkable set of changes that take place in the maternal (and, to a lesser extent, the paternal), brain, arguably, for the natural, simple but singular experience of reproduction.