Reducing Risks of Facial Scarring

Risk factors for the formation of facial scars include skin type, ethnicity, scar location, and certain medical conditions that contribute to poor or delayed healing. Risk of scar can be reduced with appropriate surgical planning, including proper placement and design of incisions, meticulous skin closure, aseptic technique, and wound care to improve healing. Common pathologic scars include hypertrophic scars and keloid scars, each of which has unique approaches to surgical revision and medical treatment due to their respective risks of recurrence. Topical scar therapies, medical therapies, and surgical revision techniques for improvement in final scar appearance are discussed.

Extensive Tongue Laceration in an Edentulous Infant: Is It Child Abuse?

It is important for medical providers to distinguish between accidental and abusive mechanisms of injury in children. In the absence of a serious trauma, an isolated tongue laceration and oromaxillofacial trauma in a young, edentulous infant raises significant concern for abuse. The presented case demonstrates a unique injury pattern and serves as an opportunity to explore the multidisciplinary approach to infant trauma in Otolaryngology. Presented is an edentulous infant who sustained a deep splitting laceration of the oral tongue as a result of being dropped a short distance onto carpeted floor. This injury pattern, in the absence of other trauma, raised concern for abuse. Hospital social work and Child Abuse Pediatrics further investigated the matter. A surveillance camera video was produced which demonstrated the blunt force of the fall, coupled with the friction sliding on the floor, ripped open the infant's tongue and left a pattern otherwise suspicious for sharp object laceration. To our knowledge, this is the first report describing a full-thickness tongue laceration after a fall from a caregiver's arms onto carpeted ground. This case underscores the responsibility of the astute provider coupled with a multidisciplinary team to identify or rule out potential child abuse.

Surgical ergonomics: Assessment of surgeon posture and impact of training device during otolaryngology procedures

Objective

To identify factors associated with cervical‐thoracic spine posture in otolaryngology surgeries and evaluate the efficacy of a commercially available posture‐training device in enhancing surgeon ergonomics.

Methods

Over 3 months, neck and spine posture from individuals performing otolaryngology surgeries was recorded using UpRight Go 2™. Average baseline posture was first recorded and biofeedback was later introduced to attempt to correct posture. The proportion of time spent in upright/neutral cervical‐thoracic spine posture was correlated with surgeon and procedure characteristics and compared to proportion of upright posture time after biofeedback intervention.

Results

The proportion of upright operating time was significantly different between procedure subtypes and surgical approaches with best performance in rhinology procedures and worst performance in head and neck surgeries (90% vs. 62%; both p < .001). Female gender, shorter stature, and use of sitting stools were associated with greater proportion of surgery spent upright (all p < .05). Loupes use was associated with less time in upright posture (p < .001). With biofeedback intervention, 8 of 10 subjects demonstrated an average of 5% improvement in operating upright, with most improvement found when performing laryngology procedures (7%) and least improvement in head and neck procedures (2%).

Conclusions

While surgeon posture varies across otolaryngology surgeries, sitting and minimizing the use of loupes may help promote a more ergonomic operating environment and improve surgeon posture. Although the efficacy of biofeedback intervention from a commercially available posture‐training device differs among otolaryngologists, exploration of alternative interventions and incorporation of an ergonomics curriculum is warranted to address postural issues experienced by many surgeons.

Level of Evidence

3.

Steroid-eluting Stent Placement for Refractory Stenosis of Parotid Megaduct After Sialodochoplasty

Salivary megaduct with stricture is characterized by recurrent pain, swelling, and infection, leading to reduced quality of life. Surgical management includes sialodochoplasty, however, recurrence is common and repeated surgery can lead to further scarring. In the sinuses, drug-eluting stents (DES) are used to reduce scarring after surgery, yet no such technology exists for salivary megaduct with stricture.We trialed DES for this condition with promising results which may pave the way for future development.

Surgical wound classification in otolaryngology: A state‐of‐the‐art review

Objective

To describe the issues related to the assignment of surgical wound classification as it pertains to Otolaryngology—Head & Neck surgery, and to present a simple framework by which providers can assign wound classification.

Data Sources

Literature review.

Conclusion

Surgical wound classification in its current state is limited in its utility. It has recently been disregarded by major risk assessment models, likely due to inaccurate and inconsistent reporting by providers and operative staff. However, if data accuracy is improved, this metric may be useful to inform the risk of surgical site infection. In an era of quality‐driven care and reimbursement, surgical wound classification may become an equally important indicator of quality.

In its current state, surgical wound classification has been disregarded as a key metric, likely due to habitual inaccuracies in procedure categorization.

A new paradigm for surgical wound classification specific to Otolaryngology—Head & Neck Surgery is presented.

The possibility of surgical wound classification serving as an important indicator of quality of care is discussed and contextualized in current health care trends.

COVID-19 and the Otolaryngology Residency Match: Rising Incidence of Home Matches

Objectives/Hypothesis

To quantify the effect of the coronavirus disease 2019 (COVID‐19) pandemic upon the 2020 to 2021 residency match for Otolaryngology‐Head and Neck Surgery (OHNS).

Study Design

Retrospective cohort design.

Methods

Residency match outcomes for all applicants to our institution during 2020 to 2021 were collected from the National Residency Matching Program including medical school of origin and matched program. Matches were categorized as to home‐program, within‐region, or out‐of‐region and sorted by US geographic region. Matches from the 2020 to 2021 cycle were compared to those from 2019 to 2020, as well as averages and trends from match cycles 2016 to 2020. Statistical analysis included descriptive statistics and chi‐square testing.

Results

During 2020 to 2021, there were 436 applicants to our single OHNS program. From 2019–2020 to 2020–2021, the match rate decreased significantly for groups studied, including: All applicants (72.0% [268/372] to 64.7% [282/436]; P = .025); all US MD Senior applicants (76.5% [254/332] to 68.9% [262/380]; P = .024); and US MD Seniors specifically without a home program (77.5% [31/40] to 56.4% [22/39]; P = .046). The match rate for US MD Seniors with a home program did not change significantly (76.4% [223/292] to 70.4% [240/341]; P = .09). From 2019–2020 to 2020–2021, the proportion of US MD seniors who matched to home‐program increased significantly (22.0% [49/223] to 30.0% [72/240]; P = .05).

Conclusion

The COVID‐19 pandemic saw high volumes of OHNS applicants with an overall decreased rate of matching compared to previous years. These changes particularly affected applicants without home programs. Home‐program matching increased significantly, likely as a consequence of the limitations placed on in‐person away experiences including interviews. Laryngoscope, 132:1934–1938, 2022

A virtual sub-internship for otolaryngology-head and neck surgery

OBJECTIVE

During the COVID-19 pandemic, away rotations were suspended for safety purposes. This led to the development of online interactive learning modules for students, now known as virtual sub-internships (VSIs). To date, VSIs within otolaryngology-head and neck surgery (OHNS) have been limited in their description and design.

STUDY DESIGN

Cross-sectional survey.

SETTING

ACGME-accredited OHNS residency program.

METHODS

Our curriculum for an OHNS VSI is presented. Based on the model used by our OHNS residency program, the VSI consisted of a 2-week block of activities and interactive small-group discussions. A post-VSI feedback survey was distributed to participants; results are reported.

RESULTS

Six 2-week VSI sessions were administered. Twenty-one individuals participated from all US regions, median 4 individuals per session. Fifteen participants (71.4%) completed the feedback survey. Of survey respondents, 20% lacked a home OHNS residency program, and no respondents' home-programs featured a VSI. All respondents were satisfied with the schedule and organization of the VSI, and 73.3% (11 of 15) felt it was of appropriate duration. All respondents reported a high degree of familiarity with the program, with a greater (86.7%) or equal (13.3%) level of interest in applying to the residency program as a result of participating in the VSI.

CONCLUSION

This VSI curriculum offers a well-received virtual learning experience for medical students applying to OHNS residency. It provides an opportunity for programs to expand their appeal to potential applicants who may otherwise be restricted in their ability to travel.

Association of Sinonasal Inflammation With Functional Brain Connectivity

Importance

In recent years, there have been several meaningful advances in the understanding of the cognitive effects of chronic rhinosinusitis. However, an investigation exploring the potential link between the underlying inflammatory disease and higher-order neural processing has not yet been performed.

Objective

To describe the association of sinonasal inflammation with functional brain connectivity (Fc), which may underlie chronic rhinosinusitis-related cognitive changes.

Design, Setting, and Participants

This is a case-control study using the Human Connectome Project (Washington University-University of Minnesota Consortium of the Human Connectome Project 1200 release), an open-access and publicly available data set that includes demographic, imaging, and behavioral data for 1206 healthy adults aged 22 to 35 years. Twenty-two participants demonstrated sinonasal inflammation (Lund-Mackay score [LMS] ≥ 10) and were compared with age-matched and sex-matched healthy controls (LMS = 0). These participants were further stratified into moderate (LMS < 14, n = 13) and severe (LMS ≥ 14, n = 9) inflammation groups. Participants were screened and excluded if they had a history of psychiatric disorder and/or neurological or genetic diseases. Participants with diabetes or cardiovascular disease were also excluded, as these conditions may affect neuroimaging quality. The data were accessed between October 2019 and August 2020. Data analysis was performed between May 2020 and August 2020.

Main Outcomes and Measures

The primary outcome was the difference in resting state Fc within and between the default mode, frontoparietal, salience, and dorsal attention brain networks. Secondary outcomes included assessments of cognitive function using the National Institutes of Health Toolbox Cognition Battery.

Results

A total of 22 patients with chronic rhinosinusitis and 22 healthy controls (2 [5%] were aged 22-25 years, 26 [59%] were aged 26-30 years, and 16 [36%] were aged 31-35 years; 30 [68%] were men) were included in the analysis. Participants with sinonasal inflammation showed decreased Fc within the frontoparietal network, in a region involving bilateral frontal medial cortices. This region demonstrated increased Fc to 2 nodes within the default-mode network and decreased Fc to 1 node within the salience network. The magnitude of these differences increased with inflammation severity (dose dependent). There were no significant associations seen on cognitive testing.

Conclusions and Relevance

In this case-control study, participants with sinonasal inflammation showed decreased brain connectivity within a major functional hub with a central role in modulating cognition. This region also shows increased connectivity to areas that are activated during introspective and self-referential processing and decreased connectivity to areas involved in detection and response to stimuli. Future prospective studies are warranted to determine the applicability of these findings to a clinical chronic rhinosinusitis population.

Substantia Nigra Volume Dissociates Bradykinesia and Rigidity from Tremor in Parkinson's Disease: A 7 Tesla Imaging Study

Background:

In postmortem analysis of late stage Parkinson’s disease (PD) neuronal loss in the substantial nigra (SN) correlates with the antemortem severity of bradykinesia and rigidity, but not tremor.

Objective:

To investigate the relationship between midbrain nuclei volume as an in vivo biomarker for surviving neurons in mild-to-moderate patients using 7.0 Tesla MRI.

Methods:

We performed ultra-high resolution quantitative susceptibility mapping (QSM) on the midbrain in 32 PD participants with less than 10 years duration and 8 healthy controls. Following blinded manual segmentation, the individual volumes of the SN, subthalamic nucleus, and red nucleus were measured. We then determined the associations between the midbrain nuclei and clinical metrics (age, disease duration, MDS-UPDRS motor score, and subscores for bradykinesia/rigidity, tremor, and postural instability/gait difficulty).

Results:

We found that smaller SN correlated with longer disease duration (r = –0.49, p = 0.004), more severe MDS-UPDRS motor score (r = –0.42, p = 0.016), and more severe bradykinesia-rigidity subscore (r = –0.47, p = 0.007), but not tremor or postural instability/gait difficulty subscores. In a hemi-body analysis, bradykinesia-rigidity severity only correlated with SN contralateral to the less-affected hemi-body, and not contralateral to the more-affected hemi-body, possibly reflecting the greatest change in dopamine neuron loss early in disease. Multivariate generalized estimating equation model confirmed that bradykinesia-rigidity severity, age, and disease duration, but not tremor severity, predicted SN volume.

Conclusions:

In mild-to-moderate PD, SN volume relates to motor manifestations in a motor domain-specific and laterality-dependent manner. Non-invasive in vivo 7.0 Tesla QSM may serve as a biomarker in longitudinal studies of SN atrophy and in studies of people at risk for developing PD.

Geographic Trends in the Otolaryngology Match (2016-2020)

Objective

Presenting geographic matching trends over 5 match cycles (2016-2020) to serve as a context for changes in residency match outcomes due to the coronavirus disease 2019 (COVID-19) pandemic.

Study Design

Retrospective review.

Setting

Single academic institution-affiliated otolaryngology–head and neck surgery residency program.

Methods

Residency match outcomes for all applicants to our institution (2015-2019) were collected from the National Residency Matching Program, including medical school and matched program. Matches were categorized as home program, home region, or out of region and sorted by US geographic region. Statistical analysis included frequencies, totals, χ² testing, and binary logistic regression.

Results

From 2016 to 2020, the US MD senior match rate was 84.9%: 18.9% to home programs, 35.7% to home region, and 45.3% to out of region. Rates were similar across regions and decreased over time. Westerners matched to home programs more than Southerners or Midwesterners (27.5% vs 16.0% and 16.0%, P < .01). Southerners and Westerners were more likely to match within their regions (South: 63.1%, P = .011, odds ratio [OR] = 1.296, 95% CI, 1.060-1.584; West: 42.0%, P = .018, OR = 1.462, 95% CI, 1.066-2.004). Matching from out of region was more likely in the West and less likely in the South (West: 58.0%, P = .017, OR = 1.379, 95% CI, 1.059-1.796; South: 36.9%, P < .001, OR = 0.584, 95% CI, 0.47-0.727).

Conclusion

From 2016 to 2020 in otolaryngology–head and neck surgery, about 1 in 5 matches were to home institutions, a trend that appeared to be more common in the West. Over 4 out of 5 trainees match to nonhome programs, and nearly half relocate to a new region for training. Changes to travel, rotations, and interviews due to COVID-19 may influence these trends.

Association of CSF Biomarkers With Hippocampal-Dependent Memory in Preclinical Alzheimer Disease

OBJECTIVE

To determine whether memory tasks with demonstrated sensitivity to hippocampal function can detect variance related to preclinical Alzheimer disease (AD) biomarkers, we examined associations between performance in 3 memory tasks and CSF β-amyloid (Aβ)₄₂/Aβ₄₀ and phosopho-tau₁₈₁ (p-tau₁₈₁) in cognitively unimpaired older adults (CU).

METHODS

CU enrolled in the Stanford Aging and Memory Study (n = 153; age 68.78 ± 5.81 years; 94 female) completed a lumbar puncture and memory assessments. CSF Aβ₄₂, Aβ₄₀, and p-tau₁₈₁ were measured with the automated Lumipulse G system in a single-batch analysis. Episodic memory was assayed using a standardized delayed recall composite, paired associate (word-picture) cued recall, and a mnemonic discrimination task that involves discrimination between studied "target" objects, novel "foil" objects, and perceptually similar "lure" objects. Analyses examined cross-sectional relationships among memory performance, age, and CSF measures, controlling for sex and education.

RESULTS

Age and lower Aβ₄₂/Aβ₄₀ were independently associated with elevated p-tau₁₈₁. Age, Aβ₄₂/Aβ₄₀, and p-tau₁₈₁ were each associated with (1) poorer associative memory and (2) diminished improvement in mnemonic discrimination performance across levels of decreased task difficulty (i.e., target-lure similarity). P-tau mediated the effect of Aβ₄₂/Aβ₄₀ on memory. Relationships between CSF proteins and delayed recall were similar but nonsignificant. CSF Aβ₄₂ was not significantly associated with p-tau₁₈₁ or memory.

CONCLUSIONS

Tests designed to tax hippocampal function are sensitive to subtle individual differences in memory among CU and correlate with early AD-associated biomarker changes in CSF. These tests may offer utility for identifying CU with preclinical AD pathology.

Hippocampal and cortical mechanisms at retrieval explain variability in episodic remembering in older adults

Age-related episodic memory decline is characterized by striking heterogeneity across individuals. Hippocampal pattern completion is a fundamental process supporting episodic memory. Yet, the degree to which this mechanism is impaired with age, and contributes to variability in episodic memory, remains unclear. We combine univariate and multivariate analyses of fMRI data from a large cohort of cognitively normal older adults (N=100) to measure hippocampal activity and cortical reinstatement during retrieval of trial-unique associations. Trial-wise analyses revealed that (a) hippocampal activity scaled with reinstatement strength, (b) cortical reinstatement partially mediated the relationship between hippocampal activity and associative retrieval, (c) older age weakened cortical reinstatement and its relationship to memory behaviour. Moreover, individual differences in the strength of hippocampal activity and cortical reinstatement explained unique variance in performance across multiple assays of episodic memory. These results indicate that fMRI indices of hippocampal pattern completion explain within- and across-individual memory variability in older adults.

Concha Bullosa Affects Baseline and Postoperative Quality-of-Life Measures in Surgically Managed Chronic Rhinosinusitis

Background

Concha bullosa (CB) is a prevalent anatomic variant and frequent surgical target in endoscopic sinus surgery (ESS). However, whether CB impacts quality-of-life (QOL) in chronic rhinosinusitis (CRS) is not well established. The purpose of this study was to investigate baseline and post-ESS QOL differences in patients with medically recalcitrant CRS with and without CB.

Methods

Demographic and surgical characteristics, baseline and postoperative 22-item Sino-Nasal Outcome Test (SNOT-22) scores for 137 patients with CRS who underwent primary ESS at our institution were recorded. Computed tomography (CT) scans were reviewed for Lund–Mackay score and presence of CB. Multiplanar CT was used to measure CB dimensions and estimate volume. Multivariable analysis was performed to identify differences in SNOT-22 overall and symptom-domain scores between patients with upper quartile (≥0.8 mL) CB and without CB.

Results

CB was found in 37% of patients with mean volume of 0.67 mL. There were no significant differences in distribution of clinicodemographic variables by large CB status. At baseline, large CB was associated with higher SNOT-22 extranasal-rhinologic domain score (9.8 vs 6.0, P < .01). Following ESS, patients with large CB reported greater improvement in SNOT-22 extranasal-rhinologic domain score (multivariable mean absolute improvement 3.8, P = .01; relative 56% vs 30%).

Conclusion

Patients with medically recalcitrant CRS and concomitant large CB have higher SNOT-22 extranasal-rhinologic domain scores at baseline, but also report greater intradomain improvement exceeding the subdomain’s mean clinically important difference. To our knowledge, this is the first demonstration that CB has a clinically significant impact on QOL in CRS, and surgical intervention may be helpful to address these symptoms.

Hippocampal CA1 subfield predicts episodic memory impairment in Parkinson's disease

OBJECTIVE

Parkinson's disease (PD) episodic memory impairments are common; however, it is not known whether these impairments are due to hippocampal pathology. Hippocampal Lewy-bodies emerge by Braak stage 4, but are not uniformly distributed. For instance, hippocampal CA1 Lewy-body pathology has been specifically associated with pre-mortem episodic memory performance in demented patients. By contrast, the dentate gyrus (DG) is relatively free of Lewy-body pathology. In this study, we used ultra-high field 7-Tesla to measure hippocampal subfields in vivo and determine if these measures predict episodic memory impairment in PD during life.

METHODS

We studied 29 participants with PD (age 65.5 ± 7.8 years; disease duration 4.5 ± 3.0 years) and 8 matched-healthy controls (age 67.9 ± 6.8 years), who completed comprehensive neuropsychological testing and MRI. With 7-Tesla MRI, we used validated segmentation techniques to estimate CA1 stratum pyramidale (CA1-SP) and stratum radiatum lacunosum moleculare (CA1-SRLM) thickness, dentate gyrus/CA3 (DG/CA3) area, and whole hippocampus area. We used linear regression, which included imaging and clinical measures (age, duration, education, gender, and CSF), to determine the best predictors of episodic memory impairment in PD.

RESULTS

In our cohort, 62.1% of participants with PD had normal cognition, 27.6% had mild cognitive impairment, and 10.3% had dementia. Using 7-Tesla MRI, we found that smaller CA1-SP thickness was significantly associated with poorer immediate memory, delayed memory, and delayed cued memory; by contrast, whole hippocampus area, DG/CA3 area, and CA1-SRLM thickness did not significantly predict memory. Age-adjusted linear regression models revealed that CA1-SP predicted immediate memory (beta[standard error]10.895[4.215], p < .05), delayed memory (12.740[5.014], p < .05), and delayed cued memory (12.801[3.991], p < .05). In the fully-adjusted models, which included all five clinical measures as covariates, only CA1-SP remained a significant predictor of delayed cued memory (13.436[4.651], p < .05).

CONCLUSIONS

In PD, we found hippocampal CA1-SP subfield thickness estimated on 7-Tesla MRI scans was the best predictor of episodic memory impairment, even when controlling for confounding clinical measures. Our results imply that ultra-high field imaging could be a sensitive measure to identify changes in hippocampal subfields and thus probe the neuroanatomical underpinnings of episodic memory impairments in patients with PD.

A harmonized segmentation protocol for hippocampal and parahippocampal subregions: Why do we need one and what are the key goals?

The advent of high-resolution magnetic resonance imaging (MRI) has enabled in vivo research in a variety of populations and diseases on the structure and function of hippocampal subfields and subdivisions of the parahippocampal gyrus. Because of the many extant and highly discrepant segmentation protocols, comparing results across studies is difficult. To overcome this barrier, the Hippocampal Subfields Group was formed as an international collaboration with the aim of developing a harmonized protocol for manual segmentation of hippocampal and parahippocampal subregions on high-resolution MRI. In this commentary we discuss the goals for this protocol and the associated key challenges involved in its development. These include differences among existing anatomical reference materials, striking the right balance between reliability of measurements and anatomical validity, and the development of a versatile protocol that can be adopted for the study of populations varying in age and health. The commentary outlines these key challenges, as well as the proposed solution of each, with concrete examples from our working plan. Finally, with two examples, we illustrate how the harmonized protocol, once completed, is expected to impact the field by producing measurements that are quantitatively comparable across labs and by facilitating the synthesis of findings across different studies. © 2016 Wiley Periodicals, Inc.

Quantitative comparison of 21 protocols for labeling hippocampal subfields and parahippocampal subregions in in vivo MRI: towards a harmonized segmentation protocol

OBJECTIVE

An increasing number of human in vivo magnetic resonance imaging (MRI) studies have focused on examining the structure and function of the subfields of the hippocampal formation (the dentate gyrus, CA fields 1-3, and the subiculum) and subregions of the parahippocampal gyrus (entorhinal, perirhinal, and parahippocampal cortices). The ability to interpret the results of such studies and to relate them to each other would be improved if a common standard existed for labeling hippocampal subfields and parahippocampal subregions. Currently, research groups label different subsets of structures and use different rules, landmarks, and cues to define their anatomical extents. This paper characterizes, both qualitatively and quantitatively, the variability in the existing manual segmentation protocols for labeling hippocampal and parahippocampal substructures in MRI, with the goal of guiding subsequent work on developing a harmonized substructure segmentation protocol.

METHOD

MRI scans of a single healthy adult human subject were acquired both at 3 T and 7 T. Representatives from 21 research groups applied their respective manual segmentation protocols to the MRI modalities of their choice. The resulting set of 21 segmentations was analyzed in a common anatomical space to quantify similarity and identify areas of agreement.

RESULTS

The differences between the 21 protocols include the region within which segmentation is performed, the set of anatomical labels used, and the extents of specific anatomical labels. The greatest overall disagreement among the protocols is at the CA1/subiculum boundary, and disagreement across all structures is greatest in the anterior portion of the hippocampal formation relative to the body and tail.

CONCLUSIONS

The combined examination of the 21 protocols in the same dataset suggests possible strategies towards developing a harmonized subfield segmentation protocol and facilitates comparison between published studies.

APOE ε4 worsens hippocampal CA1 apical neuropil atrophy and episodic memory

OBJECTIVES

Using high-resolution structural MRI, we endeavored to study the relationships among APOE ε4, hippocampal subfield and stratal anatomy, and episodic memory.

METHODS

Using a cross-sectional design, we studied 11 patients with Alzheimer disease dementia, 14 patients with amnestic mild cognitive impairment, and 14 age-matched healthy controls with no group differences in APOE ε4 carrier status. Each subject underwent ultra-high-field 7.0-tesla MRI targeted to the hippocampus and neuropsychological assessment.

RESULTS

We found a selective, dose-dependent association of APOE ε4 with greater thinning of the CA1 apical neuropil, or stratum radiatum/stratum lacunosum-moleculare (CA1-SRLM), a hippocampal subregion known to exhibit early vulnerability to neurofibrillary pathology in Alzheimer disease. The relationship between the ε4 allele and CA1-SRLM thinning persisted after controlling for dementia severity, and the size of other hippocampal subfields and the entorhinal cortex did not differ by APOE ε4 carrier status. Carriers also exhibited worse episodic memory function but similar performance in other cognitive domains compared with noncarriers. In a statistical mediation analysis, we found support for the hypothesis that CA1-SRLM thinning may link the APOE ε4 allele to its phenotypic effects on memory.

CONCLUSIONS

The APOE ε4 allele segregated dose-dependently and selectively with CA1-SRLM thinning and worse episodic memory performance in a pool of older subjects across a cognitive spectrum. These findings highlight a possible role for this gene in influencing a critical hippocampal subregion and an associated symptomatic manifestation.

Interim evaluation of the Rural Health Scholars Program

BACKGROUND

The imperative to address physician maldistribution has been directed in part at medical schools.

DESCRIPTION

The Rural Health Scholars Program (RHSP) is an enrichment initiative that has been implemented at 2 medical schools to increase the number of students likely to practice primary care in rural, underserved areas. It is a longitudinal program that includes a skill-building workshop; a 5-week summer preceptorship with community-based preceptors in rural, underserved areas; and opportunities to return to preceptorship sites during 3rd- and 4th-year rotations. Students also attend community-based and teleconference seminars and workshops, as well as informal social gatherings.

EVALUATION

A static-group comparison design was used to compare program participants with nonparticipants regarding residency program types and locations.

CONCLUSIONS

The RHSP is meeting some interim objectives conducive to its long-term goal of developing physicians who will practice primary care medicine in rural, underserved areas of North Carolina.

State scholarship, loan forgiveness, and related programs: the unheralded safety net

CONTEXT

In the mid-1980s, states expanded their initiatives of scholarships, loan repayment programs, and similar incentives to recruit primary care practitioners into underserved areas. With no national coordination or mandate to publicize these efforts, little is known about these state programs and their recent growth.

OBJECTIVES

To identify and describe state programs that provide financial support to physicians and midlevel practitioners in exchange for a period of service in underserved areas, and to begin to assess the magnitude of the contributions of these programs to the US health care safety net.

DESIGN

Cross-sectional, descriptive study of data collected by telephone, mail questionnaires, and through other available documents, (eg, program brochures, Web sites).

SETTING AND PARTICIPANTS

All state programs operating in 1996 that provided financial support in exchange for service in defined underserved areas to student, resident, and practicing physicians; nurse practitioners; physician assistants; and nurse midwives. We excluded local community initiatives and programs that received federal support, including that from the National Health Service Corps.

MAIN OUTCOME MEASURES

Number and types of state support-for-service programs in 1996; trends in program types and numbers since 1990; distribution of programs across states; numbers of participating physicians and other practitioners in 1996; numbers in state programs relative to federal programs; and basic features of state programs.

RESULTS

In 1996, there were 82 eligible programs operating in 41 states, including 29 loan repayment programs, 29 scholarship programs, 11 loan programs, 8 direct financial incentive programs, and 5 resident support programs. Programs more than doubled in number between 1990 (n = 39) and 1996 (n = 82). In 1996, an estimated 1306 physicians and 370 midlevel practitioners were serving obligations to these state programs, a number comparable with those in federal programs. Common features of state programs were a mission to influence the distribution of the health care workforce within their states' borders, an emphasis on primary care, and reliance on annual state appropriations and other public funding mechanisms.

CONCLUSIONS

In 1996, states fielded an obligated primary care workforce comparable in size to the better-known federal programs. These state programs constitute a major portion of the US health care safety net, and their activities should be monitored, coordinated, and evaluated. State programs should not be omitted from listings of safety-net initiatives or overlooked in future plans to further improve health care access. JAMA. 2000;284:2084-2092.

Our Community Hospital: the evolution of a rural primary care hospital

In the next few years, Our Community Hospital, located in the small town of Scotland Neck, NC, will undergo a conversion through which it may serve as an appropriate model for similar small hospitals in distressed rural communities. With technical and grant assistance from the Office of Rural Health and Resource Development of the North Carolina Department of Human Resources, the hospital has begun to phase out almost all acute care services and will expand and strengthen its focus on primary care, emergency medical services, and services for elderly persons. This paper addresses four issues of greatest concern to hospital administrators, rural health professionals, academics, and rural residents interested in hospital conversions: (1) community involvement during the planning process; (2) the evolution of the program's structure; (3) financing for the project; and (4) the development of cooperation between state and federal governments, foundations, and private groups. This case study describes one possible course in addressing an acute health care problem facing rural America--the viability of rural hospitals.

Transpubic ilio-deep femoral-anterior tibial sequential bypass with nonreversed translocated saphenous vein for limb salvage

We report a case of successive occlusions of aortofemoral, femorofemoral, axillofemoral, and numerous thrombectomies successfully managed by the use of nonreversed translocated saphenous vein for transpubic ilio-deep femoral-anterior tibial sequential bypass.

New health practitioners in rural satellite health centers: the past and future

Data from a 1975 and a follow-up 1979 survey of 44 rural, satellite health centers staffed by new health practitioners (NHPs)are compared to determine what changes have taken place in these centers during this period when the number of physicians in the United States has markedly increased. Of the surveyed clinics, 8 closed and 12 converted to having physicians on their staffs by 1979. The remaining 24 NHP-staffed centers realized growth in staff size and budget, patient utilization, and proportion of budget generated by revenues from patients. (Despite these positive changes, most of these 24 clinics expressed concern about their financial situations-a reflection of the considerable room for further improvement.) The general growth of the 24 NHP-staffed satellites, however, was not as substantial as that achieved by the 12 clinics staffed by physicians in 1979. The rapidly increasing supply of physicians in the United States and the potential effects of this trend on NHP-staffed rural satellite centers are discussed. Possible reasons why these satellites may continue to be of value in making primary care available in rural areas are enumerated.

Effects of chronic ethanol treatment on rat liver mitochondrial protein synthesis

Chronic ethanol treatment of male Sprague-Dawley rats resulted in a 50% decrease in the rate of incorporation of precursor leucine into isolated mitochondria. This decrease is manifest in a decreased labeling of three polypeptides of inner mitochondrial membranes that are the major products of in vitro mitochondrial protein synthesis under the conditions employed. Immunoprecipitation of cytochrome-c oxidase revealed that these three polypeptides are subunits 1, 2, and 3 of cytochrome-c oxidase and have apparent molecular weights of 33,000, 25,000, and 20,000. Sixty percent of the total incorporated radioactivity is associated with these polypeptides. A decrease in the contents of subunit 2 and of a second polypeptide with an apparent molecular weight of 22,000 was also noted as an effect of chronic ethanol treatment.

Origin of mitochondrial enzymes. V. The polypeptide character and the biosynthesis of rat liver cytochrome c oxidase polypeptides by mitochondria

Isolated rat liver mitochondria were labeled in vitro with L-[14C]leucine. Sixty percent of the incorporated radioactivity was found to reside in subunits 1, 2, and 3 of cytochrome c oxidase with apparent molecular weights of approximately 33,000, 25,000, and 20,000, respectively. The results indicate that these are the predominant products of protein synthesis under the conditions employed. The enzyme complex, as derived by immunoprecipitation, was found to contain four additional polypeptides with apparent molecular weights of 17,000, 12,500, 7000, and 3500. A comparison of electrophoretic profiles of the rat liver and beef heart enzyme reveals that the apparent molecular weights of all polypeptides are remarkably similar.