Demonstration of a U.S. nationwide reduction in transfusion in general surgery and a review of published transfusion reduction methodologies.

BACKGROUND: Red blood cell transfusions in surgical procedures can be lifesaving. However, recent studies show transfusions are associated with a dose-dependent increase in postoperative morbidity and mortality; hospitals and physicians have attempted to reduce them. We sought to determine the success of these efforts and review and summarize published reduction methods employed. STUDY DESIGN/METHODS: An analysis of transfusion data from ACS-NSQIP public use files of general surgical procedures for 2012 and 2018; a retrospective review of the literature surrounding general surgical transfusion reduction from 2008 to 2018. RESULTS: The rate of general surgical transfusion in the NSQIP dataset decreased from 5.5% in 2012 to 4.0% in 2018, a 27% relative reduction in transfusion. After extensive multivariable adjustment for patient risk and operative complexity, this effect remained (Odds ratio 0.65, 95% CI 0.63-0.67, p < .001). Furthermore, there was a positive correlation between specific procedure decreases in transfusion and decreases in 30-day morbidity (rho =0.41, p = .003) and mortality (rho = 0.37, p = .007). There were 866 published studies matching our search term "red blood cell transfusion reduction." Forty-four were relevant to general surgery. Seven dominant strategies for transfusion reduction by descending frequency of report included restrictive transfusion thresholds, management of preoperative anemia, perioperative interventions, educational programs, electronic clinical decision support, waste reduction, and audits of transfusion practices. CONCLUSION: Our study demonstrates a 27% decrease in general surgery transfusion between 2012 and 2018 with associated reductions in morbidity and mortality, suggesting published employed strategies have been successful and safely implemented.

The Influence of the Opioid Epidemic on Firearm Violence in Kentucky Counties.

BACKGROUND: The opioid crisis is a major public health emergency. Current data likely underestimate the full impact on mortality due to limitations in reporting and toxicology screening. We explored the relationship between opioid overdose and firearm-associated emergency department visits (ODED & FAED, respectively). METHODS: For the years 2010 to 2017, we analyzed county-level ODED and FAED visits in Kentucky using Office of Health Policy and US Census Bureau data. Firearm death certificate data were analyzed along with high-dose prescriptions from the Kentucky All Schedule Prescription Electronic Reporting records. Socioeconomic variables analyzed included health insurance coverage, race, median household earnings, unemployment rate, and high-school graduation rate. RESULTS: ODED and FAED visits were correlated (Rho = 0.29, P< 0.01) and both increased over the study period, remarkably so after 2013 (P < 0.001). FAED visits were higher in rural compared to metro counties (P < 0.001), while ODED visits were not. In multivariable analysis, FAED visits were associated with ODED visits (Std. B = 0.24, P= 0.001), high-dose prescriptions (0.21, P = 0.008), rural status (0.19, P = 0.012), percentage white race (-0.28, P = 0.012), and percentage high school graduates (-0.68, P < 0.001). Unemployment and earnings were bivariate correlates with FAED visits (Rho = 0.42, P < 0.001 and -0.32, P < 0.001, respectively) but were not significant in the multivariable model. CONCLUSIONS: In addition to recognized nonfatal consequences of the opioid crisis, firearm violence appears to be a corollary impact, particularly in rural counties. Firearm injury prevention efforts should consider the contribution of opioid use and abuse.

High Resource Utilization in Emergent Versus Elective General Surgery.

BACKGROUND: In an era of pay for performance metrics, we sought to increase understanding of factors driving high resource utilization (HRU) in emergent (EGS) versus same-day elective (SDGS) general surgery patients. METHODS: General surgery procedures from the 2016 ACS-NSQIP public use file were grouped according to the first four digits of the primary procedure CPT code. Groups having at least 100 of both elective and emergent cases were included (22 groups; 83,872 cases). HRU patients were defined as those in-hospital >7D, returned to the OR, readmitted, and/or had morbidity likely requiring an intensive care unit (ICU)stay. Independent NSQIP predictors of HRU were identified through forward regression; P for entry < 0.05, for exit > 0.10. RESULTS: Of all patients, 33% were HRU. The three highest HRU procedures (total colectomy, enterolysis, and ileostomy) comprised a higher proportion of EGS than SDGS cases (10.3 versus 2.6%, P < 0.001). The duration of operation was 40 Min lower in EGS after adjustment. Thirty-nine of the remaining 40 HRU predictors were higher in EGS including preoperative SIRS/Sepsis (50 versus 2%), ASA classification IV-V (31 versus 5%), albumin <3.5 g/dL (40 versus 12%), transfers (26 versus 2%, P's < 0.001), septuagenarians (35 versus 25%) and disseminated cancer (6.3 versus 4.8%, P's < 0.001); while sex did not differ. After adjustment, EGS patients remained more likely to be HRU (odds ratio 2.5, 95% CI 2.4 - 2.6, P < 0.001). CONCLUSIONS: EGS patients utilize significantly more resources than SDGS patients above what can be adjusted for in the clinically robust ACS-NSQIP dataset. Distinctive payment and value-based performance models are necessary for EGS.

Perceptions of Equity and Inclusion in Acute Care Surgery: From the #EAST4ALL Survey.

OBJECTIVES AND BACKGROUND: The aim of this study was to characterize equity and inclusion in acute care surgery (ACS) with a survey to examine the demographics of ACS surgeons, the exclusionary or biased behaviors they witnessed and experienced, and where those behaviors happen. A major initiative of the Equity, Quality, and Inclusion in Trauma Surgery Practice Ad Hoc Task Force of the Eastern Association for the Surgery of Trauma was to characterize equity and inclusion in ACS. To do so, a survey was created with the above objectives. METHODS: A cross-sectional, mixed-methods anonymous online survey was sent to all EAST members. Closed-ended questions are reported as percentages with a cutoff of α = 0.05 for significance. Quantitative results were analyzed focusing on mistreatment and bias. RESULTS: Most respondents identified as white, non-Hispanic and male. In the past 12 months, 57.5% of females witnessed or experienced sexual harassment, whereas 48.6% of surgeons of color witnessed or experienced racial/ethnic discrimination. Sexual harassment, racial/ethnic prejudice, or discrimination based on sexual orientation/sex identity was more frequent in the workplace than at academic conferences or in ACS. Females were more likely than males to report unfair treatment due to age, appearance or sex in the workplace and ACS (P ≤ 0.002). Surgeons of color were more likely than white, non-Hispanics to report unfair treatment in the workplace and ACS due to race/ethnicity (P < 0.001). CONCLUSIONS: This is the first survey of ACS surgeons on equity and inclusion. Perceptions of bias are prevalent. Minorities reported more inequity than their white male counterparts. Behavior in the workplace was worse than at academic conferences or ACS. Ensuring equity and inclusion may help ACS attract and retain the best and brightest without fear of unfair treatment.

A Novel Immune Modulator for Patients With Necrotizing Soft Tissue Infections (NSTI): Results of a Multicenter, Phase 3 Randomized Controlled Trial of Reltecimod (AB 103).

BACKGROUND AND OBJECTIVE: Reltecimod, a CD 28 T-lymphocyte receptor mimetic, inhibits T-cell stimulation by an array of bacterial pathogens. A previous phase 2 trial demonstrated improved resolution of organ dysfunction after NSTI. We hypothesized that early administration of reltecimod would improve outcome in severe NSTI. METHODS: Randomized, double-blind, placebo-controlled trial of single dose reltecimod (0.5 mg/kg) administered within 6 hours of NSTI diagnosis at 65 of 93 study sites. Inclusion: surgical confirmation of NSTI and organ dysfunction [modified Sequential Organ Failure Assessment Score (mSOFA) score ≥3]. Primary analysis was modified Intent-to-Treat (mITT), responder analysis using a previously validated composite endpoint, necrotizing infection clinical composite endpoint, defined as: alive at day 28, ≤3 debridements, no amputation beyond first operation, and day 14 mSOFA ≤1 with ≥3 point reduction (organ dysfunction resolution). A prespecified, per protocol (PP) analysis excluded 17 patients with major protocol violations before unblinding. RESULTS: Two hundred ninety patients were enrolled, mITT (Reltecimod 142, Placebo 148): mean age 55 ±â€Š15 years, 60% male, 42.4% diabetic, 28.6% perineal infection, screening mSOFA mean 5.5 ±â€Š2.4. Twenty-eight-day mortality was 15% in both groups. mITT necrotizing infection clinical composite endpoint success was 48.6% reltecimod versus 39.9% placebo, P = 0.135 and PP was 54.3% reltecimod versus 40.3% placebo, P = 0.021. Resolution of organ dysfunction was 65.1% reltecimod versus 52.6% placebo, P = 0.041, mITT and 70.9% versus 53.4%, P = 0.005, PP. CONCLUSION: Early administration of reltecimod in severe NSTI resulted in a significant improvement in the primary composite endpoint in the PP population but not in the mITT population. Reltecimod was associated with improved resolution of organ dysfunction and hospital discharge status.

Assessing the state of knowledge of contemporary climate change and primates.

In recent years, interest in understanding the effects of climate change on species and ecological systems has sharply increased. We quantify and contextualize the current state of knowledge about the effects of contemporary climate change on non-human primates, a taxon of great ecological and anthropological significance. Specifically, we report findings from a systematic literature search designed to assess the allocation of research effort on primates and climate change and consider how the current distribution of knowledge may be influencing our understanding of the topic. We reveal significant phylogenetic and geographic gaps in our knowledge, which is strongly biased towards lemurs, apes, and a relatively small subset of primate range countries. We show that few analyses investigate changes in primate foods relative to changes in primates themselves or their habitats, and observe that few longitudinal datasets are of sufficient duration to detect effects on the generational scale. We end by identifying areas of research inquiry that would advance our theoretical understanding of primate ecology, evolution, and adaptability, and meaningfully contribute to primate conservation.

Multicenter Validation of the Revised Assessment of Bleeding and Transfusion (RABT) Score for Predicting Massive Transfusion.

BACKGROUND: Massive transfusion (MT) is a lifesaving treatment for hemorrhaging patients. Predicting the need for MT is crucial to improve survival. The aim of our study was to validate the Revised Assessment of Bleeding and Transfusion (RABT) score to predict MT in a multicenter cohort of trauma patients. METHODS: We performed a (2015-2017) analysis of adult (age ≥ 18 year) trauma patients who had a high-level trauma team activation at three Level I trauma centers. The RABT was calculated using the 4-point score [blunt (0)/penetrating trauma (1), shock index ≥ 1 (1), pelvic fracture (1), and FAST positive (1)]. A RABT score of ≥ 2 was used to predict MT (≥ 10 units of packed red blood cells within 24 h). The area under the receiver operating characteristic curve (AUROC) was calculated to assess the score's predictive power compared to the Assessment of Blood Consumption (ABC) score. RESULTS: We analyzed 1018 patients: 216 (facility I), 363 (facility II), and 439 (facility III). The mean age was 41 ± 19 year, and the injury severity score (ISS) was 29 [22-36]. The overall MT rate was 19%. The overall AUROC of RABT ≥ 2 was 0.89. The sensitivity of the RABT ≥ 2 was 78%, and the specificity was 91%. The RABT score had a higher sensitivity (78% vs. 69%) and specificity (91% vs. 82%) than the ABC score. CONCLUSION: The RABT score is a valid tool to predict MT in severely injured trauma patients. It is an objective score that aids clinicians in predicting the need for MT to mobilize blood products and minimize the waste of resources.

Exploring Family Decisions to Refuse Organ Donation at Imminent Death.

Communication about organ donation at the time of imminent death is a meaningful, yet less understood, area of health communication. We employed a multiple goals framework to explore family normative perceptions of organ donation and the conversational goal tensions experienced during a family member's imminent death. Semi-structured interviews were conducted with 14 family members who refused to donate when approached by an organ procurement coordinator (OPC) upon the imminent death of a family member. Thematic analysis revealed that family members described their decisions to refuse donation as (a) last acts of love, (b) responses to unnecessary requests, and (c) consistent with the known beliefs of the patient. Participants described several goal tensions operating within the organ donation conversation itself, including (a) the management of frequent requests, (b) pressure to donate, and (c) enduring unwanted requests from the OPC. Communication goals frameworks offer practical insights for improving organ-related conversations.

Electrolyte Analysis and Replacement: Challenging a Paradigm in Surgical Patients.

Postoperative patients are susceptible to alterations in electrolyte homeostasis. Although electrolytes are replaced in critically ill patients, stable asymptomatic non-intensive care unit (ICU) patients often receive treatment of abnormal electrolytes. We hypothesize there is no proven benefit in asymptomatic patients. In 2016, using the electronic medical records and pharmacy database at a university academic medical center, we conducted a retrospective cost analysis of the frequency and cost of electrolyte analysis (basic metabolic panel [BMP], ionized calcium [Ca], magnesium [Mg], and phosphorus [P]) and replacement (potassium chloride [KCl], Mg, oral/iv Ca, oral/iv P) in perioperative patients. Patients without an oral diet order, with creatinine more than 1.4, age less than 16 years, admitted to the ICU, or with length of stay of more than 1 week were excluded. Nursing costs were calculated as a fraction of hourly wages per laboratory order or electrolyte replacement. One hundred thirteen patients met our criteria over 11 months. Mean length of stay was 4 days; mean age was 54 years; and creatinine was 0.67 ± 0.3. Electrolyte analysis laboratory orders (n = 1,045) totaled $6,978, and BMP was most frequently ordered accounting for 36% of laboratory costs. In total, 683 doses of electrolytes cost the pharmacy $1,780. Magnesium was most frequently replaced, followed by KCl, P, and Ca. Nursing cost associated with electrolyte analysis/replacement was $7,782. There is little evidence to support electrolyte analysis and replacement in stable asymptomatic noncritically ill patients, but their prevalence and cost ($146/case) in this study were substantial. Basic metabolic panels, pharmacy charges for potassium, and nursing staff costs accounted for the most significant portion of the total cost. Considering these data, further research should determine whether these practices are warranted.

Wilderness Falls: An Analysis and Comparison of Rock Climbers and Nonclimbers.

BACKGROUND: Wilderness travel and rock climbing are increasingly popular. Urban falls from height have been reported from trauma centers; however, there have been no trauma center reports of rock climbing or wilderness falls (WFs) in the United States. We sought to describe the injury pattern of WF and to determine whether rock climbers represent a distinct pattern of injury. MATERIALS AND METHODS: The trauma database from our level 1 trauma center was queried from 1/1/06 to 12/31/16 for the diagnosis of "fall from cliff" (ICD9: e884.1, ICD10: w15.xx). Demographics, injury characteristics, and trauma center care were analyzed. Data were analyzed using two sample unequal variance T-tests, two sample Z-tests for proportions, and Fisher's exact tests. RESULTS: One hundred fifty-one falls were analyzed (40 climbers, 111 nonclimbers). WF victims were predominantly male (79%), moderately injured (mean injury severity score = 13.2), frequently intoxicated (34%), and fell from an average of 43 feet (7-200 ft). The most frequent injures were soft tissue (55%), spine (50%), head (43%), lower extremity (38%), and chest (39%). Climbers were younger, more often sustained upper extremity and soft tissue injuries, more often flown from the scene, injured during daytime, and were better insured. Helmet use was rare (one climber and one nonclimber). There were 3 (2%) deaths, including one climber. CONCLUSIONS: WFs have a distinct injury pattern and demographic and occur from a height greater than twice those reported in urban falls. Rock climbing falls involve another distinct demographic and pattern of injury. Injury prevention strategies may include helmet use and avoiding nighttime wilderness travel and drug/alcohol use.

Cost Burden and Mortality in Rural Emergency General Surgery Transfer Patients.

BACKGROUND: Recent articles have suggested regionalization of some emergency general surgery (EGS) problems to tertiary referral centers. We sought to characterize the clinical and cost burden of such transfers to our tertiary referral center. MATERIALS AND METHODS: Data were collected retrospectively for nine EGS diagnoses for patients admitted to the EGS service during calendar years 2015 and 2016. Patients were grouped as inpatient transfers (IPTs), Emergency Department transfers (EDTs), or local admissions (LAs). Demographic data, length of stay at originating site, insurance status, Charlson Comorbidity Index, and all relevant financial data were obtained. RESULTS: Six hundred sixty-three patients were reviewed: 93 IPTs, 343 EDTs, and 227 LAs. IPTs required longer lengths of stay (7.0 d compared to 4.0 d for EDTs and 3.0 d for LAs), higher median direct costs, and higher case mix index, which produced a higher median revenue but averaged a median net loss (-$264 compared to +$2436 for EDTs and +$3125 for LAs). The IPTs had higher median comorbidities (Charlson Comorbidity Index 3.5 versus 2.9 for EDTs and 2.0 for LAs), age (62 y versus 58 for EDTs and 52 for LAs), and mortality rate (7.5% versus 2.3% for EDTs and 0.4% for LAs). CONCLUSIONS: Patients who present to a tertiary care EGS service as an IPT from another hospital have more comorbidities, higher mortality rate, and result in a financial loss. These data suggest the need for adequate risk adjustment in quality assessment of tertiary referral center outcomes and the need for increased financial reimbursement for the care of these patients.

A comparison of short-term outcomes between laparoscopic and open emergent repair of perforated peptic ulcers.

BACKGROUND: We compared 30-day outcomes in patients undergoing emergent open and laparoscopic repair of perforated peptic ulcers in a large multicenter cohort. METHODS: Prospectively obtained data in the American College of Surgeons National Surgical Quality Improvement Program public use files from 2010 to 2016 were reviewed. Perioperative risks and outcomes were compared in unmatched and propensity-matched groups using parametric/non-parametric statistical tests as appropriate. RESULTS: A total of 4210 procedures were identified 345 (8.2%) laparoscopic and 3865 (91.8%) open. Laparoscopic repairs increased from 4.5% of 2010 cases to 11.4% of 2016 cases (p < .001). Open repair patients had more acute presentation including higher rates of ASA class, hypoalbuminemia, preoperative septic shock, dyspnea, and mechanical ventilation (all p < .01). Laparoscopic operations were longer than open procedures (p < .001). Mortality (8.5 vs. 3.5%), median length of stay (7 vs. 5 days), transfusion rates (13.7 vs. 7.0%), renal failure (3.7 vs. 1.2%), and respiratory failure (15.5 vs. 5.2%) were all worse in the unmatched open group (all p < .01). Propensity matching resulted in 342 laparoscopic and 626 open cases of similar ulcer type, demographics, ASA class, preoperative SIRS/sepsis, hypoalbuminemia, and wound class. Mortality was similar between matched groups (5.0 vs. 3.5%, p = .331). Median length of stay was longer in the open group (6 vs. 5 days, p < .001), which also had higher rates of prolonged ventilation/reintubation (9.6 vs. 5.3%, p = .019) and abdominal wall wound occurrences (6.2 vs. 2.3%, p = .042). Return to the operating room and 30-day readmissions did not differ between the matched groups. CONCLUSIONS: Emergent laparoscopic repair of perforated peptic ulcer is increasingly being performed, is safe relative to open repair (in patients without preoperative septic shock), and confers a modest benefit in terms of length of stay, respiratory, and abdominal wall wound complications.

A Psychometric Analysis of CIWA-Ar in Acutely Ill and Injured Hospitalized Patients.

Alcohol withdrawal syndrome (AWS) manifests after alcohol-dependent individuals suddenly cease alcohol consumption. Clinical Institute Withdrawal Assessment-Alcohol, revised (CIWA-Ar) is a widely used tool to assess and guide treatment of AWS. CIWA-Ar was developed in voluntarily detoxification centers, and the reliability and validity of CIWA-Ar have been minimally evaluated in hospitalized patients. We performed a retrospective chart review of 479 cases of screening and treatment of AWS using CIWA-Ar, of which 118 were admitted to a trauma/orthopedic (T/O) service and 361 to an internal medicine (IM) service. Exploratory factor analyses with varimax rotation were applied for each population, and reliability testing was performed on the determined subscales. Exploratory factor analyses yielded 2 unique structures, each explaining 56% of the variance of CIWA-Ar. The IM group had a 3-factor structure with the Physical Disturbances (23%), Anxiety (19%), and Confusion (14%) subscales. The T/O group had a 2-factor structure with the Neurological Disturbances (36%) and Physical Disturbances (20%) subscales. Overall, Cronbach's alphas were acceptable (0.74 and 0.82 for IM and T/O, respectively); however, Cronbach's alphas for the IM subscales were 0.66 and 0.69 for physical disturbances and anxiety, respectively. Cronbach's alpha for the Confusion subscale was not calculated because only 1 scale item loaded. The subscales of the T/O factor structure yielded Cronbach's alphas of 0.81 for neurological disturbances and 0.62 for physical disturbances. Our analyses did not support the reliability or validity of CIWA-Ar in acutely ill or injured patients, warranting further investigation and tool development for AWS management in the hospital setting.

Solvent Effects on Growth, Crystallinity, and Surface Bonding of Ge Nanoparticles.

Solvent effects on the microwave-assisted synthesis of germanium nanoparticles are presented. A mixture of oleylamine and 1-dodecene was used as the reaction solvent. Oleylamine serves as a reducing agent in the synthesis while both molecules act as binding ligands. Increased concentrations of 1-dodecene in the solvent mixture were found to increase the size of the formed nanoparticles. Crystallinity was also dependent on the solvent mixture. Amorphous nanoparticles were obtained at lower 1-dodecene concentrations, whereas, at higher concentrations, particles contained crystalline and amorphous domains. 11-Methoxyundec-1-ene was synthesized to replace 1-dodecene in the reaction mixture for nuclear magnetic resonance (NMR) studies. 1H NMR of the reaction products shows that both solvent molecules in the system act as binding ligands on the nanoparticle surface. Nanoparticles were characterized using powder X-ray diffraction, scanning transmission electron microscopy, and spectroscopy techniques (Raman, UV-vis, FT-IR, and NMR).

Trauma Trainees' Multiple Competing Goals in Opioid Prescription Communication.

Prescription opioids and heroin account for more than half of all drug overdose fatalities, costing an estimated 115 American lives every day. The ongoing opioid epidemic devastates communities and represents a tremendous burden to the national economy and health care system. In 2016, the Centers for Disease Control and Prevention and the White House Office of National Drug Control Policy proposed action to train prescribers on the proper dispensing of opioids, which are indispensable pharmacologic resources for treating acute pain resulting from a traumatic injury or surgery. Trauma surgeons who prescribe opioids for severe pain embark on patient consultations with multiple and conflicting goals respective to their roles as a healers of the suffering, regulators of illicit substances, members of a greater medical system working to contain an opioid epidemic, and moral beings with a distinct set of preferences, experiences, social norms, and practice philosophies. Semistructured interviews with 17 trauma and surgical residents and fellows at a southeastern academic medical center in the United States generated descriptive data regarding prescribing practices and patient communication. Guided by the multiple goals framework, the current research presents three prominent themes depicting the problematic convergence of identity, task, and relational goals during opioid-prescribing conversations between trauma trainees and their patients.

Use of Plasma-Based Trauma Transfusion Protocols at Level IV Trauma Centers.

Early initiation of a high ratio massive transfusion can lower trauma patient mortality by 80%. Long transport times from rural Level IV trauma centers therefore require that damage control resuscitation begin before patient transfer. This study evaluates the current use of fresh frozen plasma (FFP) at Level IV trauma centers and the feasibility of implementing trauma transfusion protocols at these centers. Demographic and clinical data were collected for trauma patients at all state Level IV trauma centers who would have met criteria for massive transfusion protocol (MTP) activation based on the Assessment of Blood Consumption (ABC) score. All state Level IV trauma centers were also surveyed to determine availability of blood bank plasma resources. A total of 760 adult trauma patients presented to a Level IV trauma center during the study period. Three hundred sixty-eight patients (48.4%) were transferred to a higher level of care. Because FAST (Focused Assessment with Sonography for Trauma) results were not available in the state registry data, we included all blunt trauma patients with an ABC score of 1 as "potential ABC-positive patients." Forty-two (5.5%) patients were potentially ABC positive. Fifteen of 22 Level IV centers responded to our survey. Seventy-three percent of respondents have FFP available. Mean time to FFP availability was 63.1 min. Median total length of stay from registration to emergency department discharge for potentially ABC-positive patients was 2 hr. Because most Level IV trauma centers have FFP and thaw times are such that administration would not delay transport to a higher level of care, we recommend implementation of MTPs at Level IV trauma centers to reduce hemorrhage-associated mortality.

First molar eruption, weaning, and life history in living wild chimpanzees.

Understanding dental development in chimpanzees, our closest living relatives, is of fundamental importance for reconstructing the evolution of human development. Most early hominin species are believed to show rapid ape-like patterns of development, implying that a prolonged modern human childhood evolved quite recently. However, chimpanzee developmental standards are uncertain because they have never been based on living wild individuals. Furthermore, although it is well established that first molar tooth emergence (movement into the mouth) is correlated with the scheduling of growth and reproduction across primates broadly, its precise relation to solid food consumption, nursing behavior, or maternal life history is unknown. To address these concerns we conducted a photographic study of subadult chimpanzees (Pan troglodytes schweinfurthii) in Kanyawara, Kibale National Park, Uganda. Five healthy infants emerged their lower first molars (M1s) by or before 3.3 y of age, nearly identical to captive chimpanzee mean ages (∼3.2 y, n = 53). First molar emergence in these chimpanzees does not directly or consistently predict the introduction of solid foods, resumption of maternal estrous cycling, cessation of nursing, or maternal interbirth intervals. Kanyawara chimpanzees showed adult patterns of solid food consumption by the time M1 reached functional occlusion, spent a greater amount of time on the nipple while M1 was erupting than in the preceding year, and continued to suckle during the following year. Estimates of M1 emergence age in australopiths are remarkably similar to the Kanyawara chimpanzees, and recent reconstructions of their life histories should be reconsidered in light of these findings.

Comprehensive Geriatric Assessment for Trauma: Operationalizing the Trauma Quality Improvement Program Directive.

Elderly patients are the fastest growing trauma demographic and present some of the most complicated clinical challenges. This feasibility study employed observational data from a geriatric cohort. Comprehensive geriatric assessments (CGAs) were performed biweekly on eligible patients, 65 years or older, who met screening criteria. Mobility, activities of daily living impairment, frailty, and depression were screened and documented, and along with summative recommendations, were entered into the medical record, communicated to the patient's primary care provider, and discussed with family. From September 1, 2015, to February 1, 2016, 65 comprehensive geriatric assessments were performed, with 2 repeats. Thirty-two (49%) were men. Mean age was 76.9 (range, 65-97) years. Motor vehicle collisions and falls accounted for the majority of trauma mechanisms (52% and 40%, respectively). New action items from the CGA were in 2 main categories: (1) home or inpatient medication changes and (2) additional physical therapist/occupational therapist intervention. Comprehensive geriatric assessment can be successfully organized and performed in centers without a designated geriatric service using standard trauma team members. Objective assessments for functional mobility, activities of daily living, frailty, and depression can be performed easily using current staff and the data easily incorporated into the CGA. Advanced practice providers can feasibly serve as clinical leads even if faculty/residents are unavailable.

Dental eruption in East African wild chimpanzees.

Knowledge of chimpanzee development has played an essential role in our understanding of the evolution of human ontogeny. However, recent studies of wild ape dentitions have cast doubt on the use of developmental standards derived from captive individuals. Others have called into question the use of deceased wild individuals to infer normative development. We conducted a high resolution photographic study of living known-age subadults in the Kanyawara community (Kibale National Park, Uganda) to generate a comprehensive three year record of dental eruption (including tooth emergence ages). These non-invasive data allow comparisons of captive and wild chimpanzees, establish accurate developmental standards for relatively healthy wild individuals, and facilitate direct assessments of primate-wide associations between dental development and life history. Emergence ages in the Kanyawara chimpanzees are very similar to living Gombe chimpanzees, and are broadly comparable to deceased Taï Forest chimpanzees. Early-emerging teeth such as the deciduous dentition and first molar (M1) appear during a time of maternal dependence, and are almost indistinguishable from captive chimpanzee emergence ages, while later forming teeth in the Kanyawara population emerge in the latter half of captive age ranges or beyond. Five juveniles whose lower M1s emerged by or before 3.3 years of age continued to nurse for a year or more beyond M1 emergence, and their mothers showed considerable variation in reproductive rates. The third molars of two adolescent females emerged several months to several years prior to the birth of their first offspring. Given that broad primate-wide relationships between molar emergence and life history do not necessarily hold within this population of chimpanzees, particularly for variables that are reported to be coincident with molar emergence, we suggest that further study is required in order to predict life history variables in hominins or hominoids.