Trigeminocardiac Reflex: A Review and Key Implications to Dermatologic Surgery.

BACKGROUND: The trigeminocardiac reflex is a common but underreported occurrence that can vary from benign to life threatening. This reflex can be elicited by placing direct pressure on the globe of the eye or from traction of the extraocular muscles, stimulating the trigeminal nerve. OBJECTIVE: To provide a review of potential stimuli for the trigeminocardiac reflex within dermatologic surgery and to discuss management options for the treatment of the trigeminocardiac reflex. METHODS: PubMed and Cochrane were used to identify articles and case reports that established scenarios in which the trigeminocardiac reflex was provoked and subsequently how the reflex was managed. RESULTS: Within the field of dermatologic surgery, the trigeminocardiac reflex can be stimulated during biopsies, cryoablations, injections, laser treatments, Mohs micrographic surgery, and oculoplastic interventions, most often occurring in an office setting. The most common presentations include significant bradycardia, hypotension, gastric hypermobility, and lightheadedness. The most definitive treatment is cessation of the inciting stimulus, monitoring, and symptomatic management. Glycopyrrolate and atropine are common treatments for severe, intractable cases of the trigeminocardiac reflex. CONCLUSION: The trigeminocardiac reflex, while underreported and underrepresented in dermatologic literature and dermatologic surgery settings, should be considered in the setting of bradycardia and hypotension during dermatologic procedures.

Parallel Vibrating Kinetic Anesthesia Devices to Reduce Pain with Scalp Injections.

The scalp is a frequent site of dermatologic procedures, and a patient's experience with the dermatologic procedure is often shaped by the pain associated with it. In this article, a technique using multiple kinetic anesthesia devices is described to both reduce pain and improve patient satisfaction with scalp injections.

Expert Recommendations on the Use of Hyaluronic Acid Filler for Tear Trough Rejuvenation.

Restylane® Lidocaine is one of the most widely used hyaluronic acid (HA) fillers to replace lost or displaced volume during tear trough correction. Patient goals for tear trough correction include looking less tired or removing dark circles and this may be achieved by administering HA filler into the infraorbital region to correct the lower eyelid relative to the volume deficit, thereby smoothing the transition from the lower eyelid to the cheek. To achieve patient satisfaction and consistent results with Restylane, optimal application is essential; however, clinical guidance based on experience is limited. This paper reflects the recommendations of an interdisciplinary expert panel for the use of Restylane in correcting tear trough deformity, including patient selection, dosing, injection technique, and post-treatment care. Recommendations were discussed and agreed as a consensus, according to cross-sectional expertise and clinical experience. J Drugs Dermatol. 2022;21(4):387-392. doi:10.36849/JDD.6597.

Forehead Movement Discrepancies After Botulinum Toxin Injections: A Review of Etiology, Correction, and Prevention.

BACKGROUND: Forehead rhytides are a popular target for botulinum toxin injections, but neuromodulation of the frontalis can be fraught with complications because of its anatomic complexity and integral role in brow position and expressivity. OBJECTIVE: This article explores common forehead movement discrepancies that can occur after neuromodulation of the frontalis, as well as how to correct and prevent them. METHODS: A review of the literature was conducted and combined with clinical experience to examine underlying forehead anatomy, etiology and correction of forehead movement discrepancies, and important factors to consider before injecting the frontalis with botulinum toxin. RESULTS AND CONCLUSION: Variable anatomy from person to person necessitates an individualized treatment approach to achieve the best cosmetic results and prevent the occurrence of forehead movement discrepancies.

Histologic Comparison of Upper Blepharoplasty Skin Excision Using Scalpel Incision Versus Microdissection Electrocautery Needle Tip Versus Continuous Wave CO2 Laser.

BACKGROUND: The various techniques of upper blepharoplasty have been compared based on surgical time to perform the procedure, postoperative healing, scar cosmesis, and cost. Few studies have evaluated the histology of the excised tissue, and no study has compared the tissue histology of 3 blepharoplasty methods using scalpel, microdissection needle with electrocautery, and CO2 laser excision in the same patient. OBJECTIVE: To evaluate the histologic changes of tissue after removal of upper eyelid skin using scalpel incision, microdissection electrocautery needle, and CO2 laser. METHODS: Upper blepharoplasty skin excisions were examined from specimens obtained using scalpel incision, microdissection needle tip with electrocautery, and CO2 continuous wave beam. The specimens were sent for permanent sections for histologic evaluation. RESULTS: The skin that was removed using cold steel scalpel incision showed no cellular necrosis or heat artifact. The tissue treated with the CO2 laser demonstrated significant thermal injury, including loss of cellular polarity, keratinocyte necrosis, and separation of the epidermis from the basement membrane. The skin excised using the electrocautery microdissection needle demonstrated fulguration artifact, including spindling of the epidermal nuclei with palisading of the keratinocytes. Necrosis was not prominent in the electrocautery microdissection needle specimens. CONCLUSION: The amount of histologic tissue injury was greatest in the skin treated with continuous wave CO2 laser, followed by the microdissection needle with electrocautery. The cold steel scalpel incision showed no cellular necrosis.

Best Clinical Practices with ATX-101 for Submental Fat Reduction: Patient-related Factors and Physician Considerations.

BACKGROUND: Submental fat can be reduced with ATX-101 (deoxycholic acid injection), a customizable and minimally invasive alternative to liposuction. In the years since its approval, the treatment patterns of ATX-101 have evolved. METHODS: A panel of experienced physicians from the United States gathered to generate best practices for the use of ATX-101 in submental contouring. RESULTS: The expert panel provided their insights on appropriate patient selection, managing patient expectations of ATX-101 treatment outcomes, and adverse events, and guidance on ATX-101 administration for optimal outcomes are presented here. CONCLUSION: These best clinical practices on the use of ATX-101 for the reduction of submental fat should enable physicians to enhance the patient treatment experience and outcomes.

Detection of viral gene expression in risk-stratified biopsies reveals no active HPV in cutaneous squamous cell carcinoma.

BACKGROUND: Human papillomavirus (HPV) infection is known to promote the development of mucosal squamous cell carcinoma (mSCC), including pathologically high-grade lesions, but its role in cutaneous squamous cell carcinoma (cuSCC) remains unclear, particularly in lesions that are considered high risk. OBJECTIVE: We aimed to determine whether enhanced HPV transcriptional activity can be detected in high-risk cuSCC samples compared with low-grade SCC samples or normal skin. METHODS: We performed RNA sequencing of cuSCC across 23 risk-stratified skin lesions. A subset of samples was tested for the presence of HPV DNA. High-quality, non-human reads from each sample group were used for viral analysis using Microbiome Coverage Profiler. RESULTS: None of the samples analysed had detectable expression of HPV RNA, while 64% of samples tested positive for HPV DNA. All samples were found to have expression of human endogenous retrovirus, and multiple samples showed expression of other viruses. CONCLUSIONS: Viral and prophage gene expression can be monitored in cuSCC or normal skin biopsies, yet no sample in our study showed evidence of active HPV gene expression despite evidence of HPV genome presence. This suggests HPV transcription does not play a role in differentiating high-risk cuSCCs from low-risk cuSCCs or normal skin.

Overview of Kybella (Deoxycholic Acid Injection) as a Fat Resorption Product for Submental Fat.

There has been an increasing interest in addressing the issue of submental fat (SMF) when it comes to cosmetic medicine. With the rise of social media, video calls, and the now almost omnipresent accessibility of cameras, there is perhaps now more than ever an emphasis on the facial image. Although invasive procedures such as liposuction and neck lift still play a significant role in reducing SMF, the trend toward minimally invasive methods has finally given rise to a single Food and Drug Administration-approved injectable that is both safe and effective: ATX-101, also known as Kybella in the United States.

Simultaneous Lateral Tarsal Strip and Medial Spindle Procedures for Cicatricial Ectropion.

BACKGROUND: Lateral tarsal strip (LTS) and medial spindle (MS) procedures are surgical techniques used to address cicatricial ectropion. OBJECTIVE: To evaluate the clinical characteristics and efficacy of simultaneous LTS and MS procedures for repair of cicatricial ectropion occurring after dermatologic surgeries. METHODS: A retrospective review of all cases of symptomatic, cicatricial, lateral, and medial punctal ectropion in 1 author's (C.C.) practice over 2 years was performed. Those resulting from dermatologic surgical procedures and repaired with simultaneous LTS and MS procedures were included. RESULTS: Fifty-six tumors involving the lower eyelid were considered highly at risk and treated with Mohs micrographic surgery and reconstruction in the senior author's practice during the review period, resulting in 3 (5.3%) cases of cicatricial ectropion. Five additional cases resulted from Mohs surgery and 7 resulted from excisions of pigmented lesions, all performed by other surgeons. One postoperative complication (6.7%) of undercorrection required reoperation, with initial surgical success rate being 93.3% and overall surgical success being 100% after the single reoperation. CONCLUSION: Simultaneous LTS and MS are useful procedures for dermatologic surgeons yielding high surgical success and a low complication rate for correction of medial and lateral cicatricial ectropion with punctal eversion.