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Background Anatomy of the frontal branch of the facial nerve relative to the zygomatic arch and the superficial musculoaponeurotic system (SMAS) has been well described. The variability centers on the location where the frontal branch traverses from a deeper to more superficial plane in the SMAS. The goal of this study is to examine the depth transition of the frontal branch of the facial nerve relative to the zygomatic arch with hopes of pinpointing a caution zone for dissection to avoid nerve injury. Methods The frontal branch of the facial nerve was dissected in 36 hemifacial fresh cadaver specimens. Pitanguy's line, the zygomatic arch, and temporal crest were marked. Measurements were taken from the zygomatic arch to the location where the frontal branch pierced the temporoparietal fascia. Locations of the superficial temporal artery (STA), the frontal branch cross relative to the lateral orbital rim and frontalis muscle were also measured. Results In 94.4% (n = 36) of the specimens, the frontal branch was found to transition to an intra-SMAS plane approximately 9.6 mm above the zygomatic arch. In all specimens, the frontal branch transitioned to an intra-SMAS plane approximately 12.2 mm posterior to Pitanguy's line. Conclusions This study describes a surgical "caution zone" centered on a point 9.6 mm above the arch and 12.2 mm posterior to Pitanguy's line, and related to the anterior branch of the STA. We hope this anatomical detail will help to decrease the likelihood of intraoperative injury to the frontal branch of the facial nerve.

Background The literature regarding the route of the dorsal nerve of the clitoris is sparse and lacks surgical focus. With an increasing number of procedures being performed on the labia, it is important to elucidate the route and note any variation from normal of the nerve. Methods Fifty-one cadavers were dissected to yield 97 dorsal nerve of the clitoris samples. Measurements were taken from (1) the dorsal nerve of the clitoris penetration point of the perineal membrane to the urethra, (2) the nerve's penetration point of the perineal membrane to the pubic bone, (3) the angle of the clitoris to the branch point of the dorsal nerve of the clitoris, and (4) the branch point of the nerve to the distalmost point of the glans clitoris. Any anomalous branching patterns of the dorsal nerve of the clitoris were recorded and classified. Results The means and standard deviations of each measurement were used to create a surgical danger zone. The mean of each measurement was (1) 34.63 mm, (2) 5.74 mm, (3) -3.07 mm, and (4) 30.40 mm, respectively. In addition, six distinct branching patterns were observed, organized, and classified based on the location and number of branches observed. Conclusions The dorsal nerve of the clitoris has multiple branching patterns and typically travels along the same course in most women. Further investigation of the course and three-dimensional position of the dorsal nerve of the clitoris is warranted to preserve sexual sensation as the frequency of procedures involving the female pudendum increases.

Context: Menstruation, although a normal physiologic process, can result in cramping and discomfort in women. The symptomatology may manifest as musculoskeletal changes that can be identified and addressed to provide relief for suffering patients. Objective: To evaluate for common somatic dysfunctions and Chapman’s reflex points by performing full-body osteopathic structural exams (OSE) on women during menstruation compared to when they are not menstruating. Methods: Participants were menstruating, female faculty, staff and students recruited from Kansas City University. Data was gathered in the form of OSE findings from 2 intervals of menstruation and compared to data gathered from 2 intervals of non-menstruation. Each participant was evaluated at 4 visits: visit 1 during menstruation, visit 2 during non-menstruation, visit 3 during their subsequent cycle of menstruation, and visit 4 during their subsequent cycle of non-menstruation. At each visit, the participant was evaluated separately by the fellow and the physician. Results: Of the 32 potential participants, 23 completed the study. In this population, 23 participants (100%) had a lumbar somatic dysfunction during one menstrual cycle, with only 14 (60.9%) having a lumbar dysfunction during non-menstruation (P=0.004). Of the 5 posterior Chapman’s reflex points evaluated, 17 participants (73.9%) had at least 1 of the Chapman’s points with dysfunction during 1 menstruation cycle compared to only 10 participants (43.5%) during non-menstruation (P=0.039). Three participants (13%) were found to have a left-sided innominate dysfunction during 1 menstrual cycle compared to only 1 participant (4%) having a left-sided innominate dysfunction during non-menstruation (P Conclusion: This study found 3 common areas of dysfunction in menstruating women that could be targeted by physicians for evaluation and treatment: the lumbar spine, the left innominate, and two posterior Chapman’s points. These findings aid in closing the gap from previously published data regarding the presence of somatic dysfunction in women during menstruation.

PURPOSE To determine the effect of phenylephrine 1.0%-ketorolac 0.3% injection (Omidria) on different components of intraoperative floppy-iris syndrome (IFIS). SETTING Silverstein Eye Centers, Kansas City, Missouri, USA. DESIGN Prospective case series. METHODS Men treated with tamsulosin having standard cataract extraction surgery were placed in a treatment group that received phenylephrine 1.0%-ketorolac 0.3% injection in the irrigation solution and a control group) that received basic saline solution. Every procedure was video recorded using an endocyclophotocoagulation (ECP) probe and microscopic view. Pupil dilation, iris billowing, and iris prolapse were measured using a micrometer, ECP recording grading scale, and microscopic recordings, respectively. RESULTS Each group (treatment and control) comprised 25 eyes of 25 patients. Although both groups had a decrease in pupil diameter before and after cataract extraction and before cataract extraction and after intraocular lens implantation, the changes were statistically significantly greater in the treatment group. Iris prolapse occurred in 3 patients (12.0%) in the treatment group and 14 patients (56.0%) in the control group (P

Background: This study evaluated how the level of medical education affected confidence of counseling on skin health, performing skin examinations, and the likelihood of using those skills in future screenings. Material and Methods: An online survey was distributed to students at three midwest medical schools that assessed sun protection behaviors, and the student’s perception of education and comfort on the complete skin examination and counseling on skin health. Results: 51.6% (n=243) indicated they were in the last two years of medical school and were considered advanced students, compared to less advanced students in the first two years. Advanced students were significantly more comfortable in performing a complete skin examination and counseling patients on skin health when compared to less advanced students (p < 0.001). However, they were also statistically less likely to indicate they would provide skin screening on future patients when compared to less advanced students (p < 0.001). Only 29.5% (n = 139) and 60.7% (n = 286) of students indicated they had been educated on performing a complete skin examination and counseling on skin health, respectively. Conclusions: Although advanced students were more likely to report education and comfortability in skin cancer screening they were not as likely to indicate they would practice these skills in the future compared to less advanced students. Also, only a small number of students perceived themselves to be educated in these aspects.

Introduction: Melanoma has become a public health problem; however, with proper education and the use of sun safety techniques, most cases can be prevented. The purpose of this study is to determine if medical students have safer sun practices than the general population. Material and Methods: An online survey was sent to all students enrolled in the three medical schools in the Kansas City metropolitan area. Surveys were sent to 1200 medical students with a 39.25% response rate (n=471). Results: Most of the student population (n=436; 92.6%) indicated that over the past year they had used one or more forms of sun protection. Of the respondents, 60.7% (n=286) indicated they had, to this point in their medical training, been educated counseling patients about the risk factors for prevention of skin cancer. Respondents who indicated that they had been educated on the steps/procedures of a complete skin exam were significantly more likely to indicate they had used sun protective equipment in the past year (P=.024). Conclusions: The general population is in need of dermatologic education on the basic risk factors of skin cancer as well as ways to prevent skin cancer. As education increases in the general population one would anticipate that these individuals would engage in safe sun practices as seen in the medical student community.

Background: Universities are facing increased budget constraints, often resulting in reduced funds to support microbiology laboratories. Online mock laboratory activities are often instituted as a cost-effective alternative to traditional wet labs for medical students. Objective: The purpose of this study was to examine students’ perceptions of online and in-person microbiology lab learning experiences. Design: We investigated undergraduate medical student perception of the in-person and online microbiology lab experience; 164 first-year medical students participated in newly designed online labs, while 83 second-year medical students continued to use in-person labs. An online survey was administered to collect student opinions of the lab experience. Results: In terms of student self-reported learning styles, those students who attended the lab in person were more likely to report a tactile learning style (33% vs 16%) while those students who learned the material online reported a visual learning style preference (77% vs 61%; n = 264). Students felt that the online microbiology lab was more convenient for their schedules when compared to the in-person lab. A greater proportion of online students (12%) felt that they encountered brand-new material on the final quiz than in-person students (1%; n = 245). Even so, 43% of the online educated students and 37% of the in-person educated students perceived their assigned lab experiences to be the optimal lab design, and over 89% of both groups reported a desire for at least some in-person instruction in a wet-laboratory environment. Conclusions: Our findings suggest that, while students are strongly supportive of digital online lab activities, the overwhelming majority of students still report a desire for a blend of online and in-person, hands-on laboratory activities. These findings will further research directed towards student perception of the lab experience and aid in the adaptation of microbiology curriculums to accommodate both student and university needs.

Background Studies have long documented the increased emergency department usage in the United States by homeless persons compared to their housed counterparts, as well as an increased overall prevalence of infectious diseases. However, there is a gap in knowledge on the treatment that homeless persons receive for these infectious diseases within United States emergency departments compared to their housed counterparts. This study seeks to understand this potential difference in treatment, including diagnostic services tested, procedures performed, and medications prescribed. Methods This study utilized a retrospective, cohort study design to analyze data from the 2007-2010 National Hospital Ambulatory Medical Care Survey (NHAMCS) database. Complex sample logistic regression analysis was used to compare variables, including diagnostic services, procedures, and medication classes prescribed between homeless and private residence individuals seeking emergency department treatment for infectious diseases. This provided an odds ratio to compare the two populations, which was then adjusted for confounding variables. Results Compared to private residence individuals, homeless persons were more likely (OR: 10.99, p< 0.05, CI: 1.08-111.40) to receive sutures or staples when presenting with an infectious disease in United States emergency departments. Compared to private residence persons, homeless individuals were less likely (OR: 0.29, p< 0.05, CI: 0.10-0.87) to be provided medications or immunizations when presenting with an infectious disease in United States emergency departments, and significant differences were detected in prescribing habits of multiple medication classes. Conclusion This study detected a significant difference in suturing/stapling and medication prescribing patterns for homeless persons with an infectious disease in United States emergency departments, compared to their housed counterparts. These results provide a platform for continual research. Disclosures All Authors: No reported disclosures

Background The incidence and prevalence of the patients diagnosed with congestive heart failure (CHF) continues to grow in the United States. The use of prescription drugs is a vital part of the management of CHF, and pharmacological regimens may vary among patients. Objectives To examine the CHF prescription trends in the United States and to determine present prescribing patterns. Methods National Ambulatory Medical Care Survey and both divisions (outpatient and emergency department) of the National Hospital Ambulatory Medical Care Survey from 2002 to 2004 were used to acquire the appropriate data. All analyses used weighted data to represent national estimates. The unit of analysis was individual patient visits. Analysis of the data was accomplished using SPSS 14.0.2 and Stata/SE 9.2 statistical programs. Results During the 3 study years, 24,213,096 weighted visits were associated with a diagnosis of CHF. More than half (56.2%) of the study population were female; over 75% of the subjects were older than 65 years. Over one-quarter (27.3%; 6,618,208 visits) of CHF-related visits were not associated with being prescribed a CHF-related medication. Loop diuretics were the most commonly used medication (35%). Cardiovascular specialists (odds ratio [OR] = 5.28; 95% confidence interval [CI]: 1.82-15.3; P = .002), general/family practice physicians (OR = 4.5, 95% CI: 1.69-12.0; P = .003), and internal medicine physicians (OR = 3.85, 95% CI: 1.39-10.7; P = .010) were more likely to prescribe CHF-related medication compared with other medical specialties. CHF patients who reside in the Northeast were more likely to receive CHF-related medications than other regions (Midwest OR = 0.24; South OR = 0.20; West OR = 0.23; P Conclusions There were regional and medical specialty-related variations for prescribing CHF-related medications. The results from this study suggest a need for increased awareness of the benefit of CHF-related medications in the management of CHF. The increased implementation of the CHF management guidelines would improve overall patient care.

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. 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. 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. 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.

Background. Childhood obesity is commonly encountered in the primary care office and disproportionately affects those from low income or minority backgrounds. Objective. To determine how accurately primary care clinicians in an urban setting identified patients with body mass indices (BMIs) at or above the 95th percentile for age and to determine which obesity treatment strategies are used. Materials and Methods. The study population consisted of school-aged, inner-city children with a BMI at or above the 95th percentile for age whose charts were made available for data collection by retrospective chart review. Results. A total of 158 patient medical charts were reviewed. Of these, 90 (57%) patients failed to be identified by the provider as having an elevated BMI. Obesity treatment was initiated in only 68 (43%) of these patients. Conclusions. Providers are not effectively recognizing childhood obesity and are not consistently implementing effective obesity treatment strategies.

Diabetes mellitus affects20 million people in the United States each year, and4000 new cases are diagnosed daily.This study assessed the prescription of statin medications in the ambulatory setting in US diabetic patients.We used data from the 2002 through 2004 National Ambulatory Medical Care Survey and National Hospital Ambulatory Medical Care Survey. All ambulatory medical visits associated with a diabetes diagnosis by the International Classification of Diseases, Ninth Revision, Clinical Modification were included. Prescriptions for statin medications were determined by searching each ambulatory visit for relevant drug names (trade and generic). Demographic characteristics were assessed, including survey year, sex, age group, race, ethnicity, payment type, region of the country, and physician's specialty and degree. Analyses used sample weights to calculate national estimates.From 2002 to 2004, 10,046 (unweighted) ambulatory visits were made by diabetic patients, representing a weighted national estimate of approximately 153 million visits. A statin prescription was associated with 21.1% of all diabetic visits and 14.1% of those without a hyperlipidemia-related diagnosis. Diabetic men were more likely than diabetic women to be given a prescription for a statin (odds ratio [OR], 1.38; 95% CI, 1.09-1.73). Compared with diabetic patients treated in 2002, those treated in 2003 and 2004 were more likely to be prescribed statin therapy (2003 OR, 1.51; 95% CI, 1.02-2.24; 2004 OR, 1.48; 95% CI, 1.03-2.15). Compared with diabetic patients aged 45 to 64 years, those in younger age groups were less likely to be given a statin prescription (1-24 years OR, 0.10; 95% CI, 0.01-0.84; 25-44 years OR, 0.48; 95% CI, 0.31-0.74), and those aged 65 to 74 years were more likely to be given a statin (OR, 1.38; 95% CI, 1.01-1.90). No differences were noted for diabetic patients agedor = 75 years.From 2002 through 2004,25% of the ambulatory medical visits by diabetic patients in the United States were associated with a statin prescription. Male sex and age up to 75 years had an increased association with statin prescription. Additional study is anticipated to assess changes in statin use in diabetic patients in the United States as updated treatment guidelines are released.