Using anatomical landmark to avoid phrenic nerve injury during balloon-based procedures in atrial fibrillation patients

Abstract

Purpose

Atrial fibrillation (AF) is an arrhythmia which affects as many as 2.7 million Americans. AF should be treated, because it can lead to a four-to-fivefold increased risk of experiencing a stroke. The American College of Cardiology/American Heart Association guidelines for the treatment of drug refractory and symptomatic paroxysmal AF denote catheter ablation as the standard of care. The newest ablation treatment, cryoballoon, uses a cold balloon tip. The biggest risk factor associated with the cryoballoon ablation is phrenic nerve injury (PNI). The purpose of this study is to measure relevant distances from specific landmarks to the right phrenic nerve (RPN) to create a safe zone for physicians.

Methods

Using 30 cadaveric specimens, we measured laterally from the right superior pulmonary vein orifice (RSPV) to the RPN at the level of the sixth thoracic vertebra and laterally from the lateral border of the sixth thoracic vertebral body (T6) to the RPN. The depth and width of the left atrium (LA) were also measured to establish a cross-sectional area of the LA. The cross-sectional area of the LA was then correlated with the averaged measurements to see if the area of the LA could be a predictor of the location of the RPN.

Results

The average distance from the RPN–RSPV was 9.6 mm (range 4.3–18.8 mm). The average RPN-T6 distance was 30.6 mm (range 13.7–49.9 mm). There was a non-significant trend that suggests as the size of the LA increases, the measured distances also increased.

Conclusion

Using the lateral border of the sixth thoracic vertebra as a landmark, which can be viewed under fluoroscopy during the procedure, physicians can triangulate the distance to the RSPV and determine the approximate position of the RPN. Furthermore, physicians can perform a preoperative echocardiogram to determine the size of the LA to assist in determining the position of the RPN with the hopes of avoiding injury to the RPN.

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Fetal Tobacco Smoke Exposure in the Third Trimester of Pregnancy Is Associated with Atopic Eczema/Dermatitis Syndrome in Infancy

Pediatric Allergy, Immunology, and Pulmonology , Vol. 0, No. 0.


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New Insights into the Anatomy of the Midface Musculature and its Implications on the Nasolabial Fold (Discussion)

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Creation of an Aesthetic Male Nipple Areolar Complex in Female-to-Male Transgender Chest Reconstruction

Abstract

Background

Female-to-male chest wall reconstruction is becoming more common, but while there is a growing body of the literature describing technique and algorithms, little detail is written on methods for creating a male appearing nipple areolar complex (NAC) from a female NAC utilizing free nipple graft techniques. Incorrect positioning of the NAC on the chest wall and suboptimal shaping and sizing of the NAC are common pitfalls in male NAC creation.

Methods

With this paper, we present techniques for nipple grafting to achieve improved male appearing NACs, as well as a simple, reproducible method for appropriate placement of the NAC relative to the borders of the pectoralis muscle. To validate our technique, we performed photographic analysis of 64 NACs in 32 volunteers with BMI of 25 or less.

Results

The anatomic study determined the cis-male nipple to be positioned on average 2.5 cm medial to the lateral border of the pectoralis muscle and 2.4 cm above the inferior pectoralis insertion. This supports our surgical technique of positioning the NAC in relation to the pectoralis borders rather than previously advocated anatomic landmarks. We also present reliable techniques for creating a round or horizontally oval final NAC shape as well as a composite grafting technique for cases of large papillae.

Conclusions

Our anatomic study supports placement of the male NAC relative to lateral and inferior borders of the pectoralis muscle. Nipple grafting techniques presented allow for a simple and reproducible method of creating an aesthetic male NAC shape in female-to-male transgender chest reconstruction.

Level of Evidence IV

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors http://ift.tt/18t7xNj.

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Combination of Würinger’s Horizontal Septum and Inferior Pedicle Techniques to Increase Nipple-Areolar Complex Viability During Breast Reduction Surgery

Abstract

Background

Breast reduction techniques depend on the vascularity of the pedicle. Preserving vascularity of the nipple-areolar complex (NAC) is mandatory for reduction mammoplasties, as the NAC is the most important aesthetic and functional unit of the breast. The inferior pedicle technique is the most common method for breast reduction; however, pedicle length may increase after using this technique and cause problems related to NAC viability in gigantomastic and hypertrophic breasts. In this study, we present our technical approach to preserve NAC viability by combining Würinger’s horizontal septum and inferior pedicle techniques.

Methods

This study included 60 women (mean age 39.71 ± 10.52 years) who underwent a breast reduction combining Würinger’s horizontal septum and inferior pedicle procedures from April 2012 to January 2016. All patients were marked preoperatively in a standing upright position using a prefabricated Wise-pattern template. The base of the pedicle was marked at the level of the inframammary ridge at a width of 8 cm.

Results

The patients were followed up for a mean of 5.6 ± 3.3 months. The resection weights of the right and left sides were 1406 ± 566 and 1340 ± 563 g, respectively. Venous insufficiency was encountered in five cases (8.3%) and caused partial NAC necrosis in one case (1.6%). No cases of total NAC necrosis were encountered. Fifteen breasts (12.5%) were described as gigantomastic (resection weight >2000 g).

Conclusions

This combined method may promote safer and more satisfying outcomes from inferior pedicle breast reduction.

Level of Evidence IV

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors http://ift.tt/18t7xNj.

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The Anterior SMAS Approach for Facelifting and for Buccal Fat Pad Removal

Abstract

Having performed numerous varieties of SMAS advancement including: plication, resection, flap elevation with variable anterior deep dissection, the author has developed a direct approach to the mobile anterior SMAS which allows correction of midface descent, modest elevation of the modiolus, jawline correction, and, where indicated, direct access for buccal fat pad resection.

Level of Evidence V

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors http://ift.tt/18t7xNj.

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Systematic Review of Quality of Patient Information on Phalloplasty in the Internet

Abstract

Background

An increasing number of patients, considering aesthetic surgery, use Internet health information as their first source of information. However, the quality of information available in the Internet on phalloplasty is currently unknown. This study aimed to assess the quality of patient information on phalloplasty available in the Internet.

Methods

The assessment of the Web sites was based on the modified Ensuring Quality Information for Patients (EQIP) instrument (36 items). Three hundred Web sites were identified by the most popular Web search engines.

Results

Ninety Web sites were assessed after, duplicates, irrelevant sources and Web sites in other languages rather than English were excluded. Only 16 (18%) Web sites addressed >21 items, and scores tended to be higher for Web sites developed by academic centers and the industry than for Web sites developed by private practicing surgeons. The EQIP score achieved by Web sites ranged between 4 and 29 of the total 36 points, with a median value of 17.5 points (interquartile range, 13–21). The top 5 Web sites with the highest scores were identified.

Conclusions

The quality of patient information on phalloplasty in the Internet is substandard, and the existing Web sites present inadequate information. There is a dire need to improve the quality of Internet phalloplasty resources for potential patients who might consider this procedure.

Level of Evidence IV

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors http://ift.tt/18t7xNj.

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