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1.
J Bone Joint Surg Am ; 2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38662807

RESUMO

BACKGROUND: High reliability in health care requires a balance between intentionally designed systems and individual professional accountability. One element of accountability includes a process for addressing clinicians whose practices are associated with a disproportionate share of patient complaints. This study aimed to evaluate the impact of the Patient Advocacy Reporting System (PARS), a tiered intervention model to reduce patient complaints about clinicians. METHODS: A retrospective cohort study was conducted involving a southeastern U.S. orthopaedic group practice. The study assessed the implementation of the PARS program and subsequent malpractice claims from 2004 to 2020. RESULTS: The implementation of PARS was associated with an 83% reduction in malpractice claims cost per high-risk clinician after intervention (p = 0.05; Wilcoxon rank sum test). The overall practice group experienced an 87% reduction in mean annual claims cost per clinician (p = 0.007; segmented regression). The successful adoption required essential elements such as PARS champions, peer messengers, an Office of Patient Affairs, and a clear statement of practice values and professionalism expectations at the time of onboarding. CONCLUSIONS: The PARS program was successfully adopted within a surgical specialty group as a part of ongoing risk prevention and management efforts. The period following PARS was associated with a retrospectively measured reduction in malpractice claim costs. The PARS program can be effectively implemented in a large, single-specialty orthopaedic practice setting and, although not necessarily causal, was, in our case, associated with a period of reduced malpractice claim costs. CLINICAL RELEVANCE: We have learned in previous research that there are clear links between professionalism and patient outcomes (e.g., surgical complications), but agree that the focus here on medical malpractice is not directly clinical.

2.
JAMA Netw Open ; 5(12): e2244661, 2022 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-36459140

RESUMO

Importance: Unprofessional behaviors and mistreatment directed at trainees continue to challenge the learning environment. Academic medical institutions should encourage reports of inappropriate behavior and address such reports directly to create a safe learning environment. Objective: To determine the feasibility of creating and implementing an online reporting system for receiving and reviewing complaints of unprofessional behavior directed toward or experienced by students, postdoctoral trainees, and residents. Design, Setting, and Participants: This cohort study assessed implementation of an online reporting system (feedback form) with a method for triaging reports, providing both positive and negative feedback, as well as adjudication and transparent public disclosure of aggregate data. The system was launched at a large urban academic medical center with numerous trainees that is fully integrated with a health system of 8 hospitals. Participants included faculty who interact with trainees, medical students, graduate students and postdoctoral fellows, and residents and clinical fellows. Follow-up began in October 2019 (at the time of tool launch) and lasted through December 2021. Data were analyzed from January to March 2022. Main Outcomes and Measures: The primary outcomes were the numbers and types of reports according to the reporter and the person reported about. Results: Participants included 2900 faculty who interact with trainees, 600 medical students, more than 1000 graduate students and postdoctoral fellows, and 2600 residents and clinical fellows. Trainees submitted 196 reports, 173 (88.3%) of which described unprofessional interactions. Among the reports describing unprofessional behavior, 60 (34.7%) were from medical students, 96 (55.5%) were from residents and fellows, 17 (9.8%) were from graduate students or postdoctoral trainees, and 78 (45.1%) were from men. The majority of negative reports described behaviors by faculty (106 [61.3%]), followed by residents and fellows (24 [13.9%]). Twenty faculty (<1.0%) accounted for 52 (50.0%) of the 104 reports describing unprofessional behaviors. Since implementation, most trainees are aware of this process. An increasing number have reported instances of mistreatment, and those who shared concerns through the online system report satisfaction with the outcome of the response to the report. Conclusions and Relevance: In this cohort study, the new reporting mechanism facilitated identification of the small number of individuals associated with unprofessional behaviors toward trainees and increased awareness of the school's commitment to creating a safe learning environment.


Assuntos
Má Conduta Profissional , Estudantes de Medicina , Masculino , Humanos , Estudos de Coortes , Centros Médicos Acadêmicos , Sistemas On-Line
3.
J Patient Saf ; 17(8): e883-e889, 2021 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-29547475

RESUMO

OBJECTIVES: The aims of the study were to develop a valid and reliable taxonomy of coworker reports of alleged unprofessional behavior by physicians and advanced practice professionals and determine the prevalence of reports describing particular types of unprofessional conduct. METHODS: We conducted qualitative content analysis of coworker reports of alleged unprofessional behavior by physicians and advanced practice professionals to create a standardized taxonomy. We conducted a focus group of experts in medical professionalism to assess the taxonomy's face validity. We randomly selected 120 reports (20%) of the 590 total reports submitted through the medical center's safety event reporting system between June 2015 and September 2016 to measure interrater reliability of taxonomy codes and estimate the prevalence of reports describing particular types of conduct. RESULTS: The initial taxonomy contained 22 codes organized into the following four domains: competent medical care, clear and respectful communication, integrity, and responsibility. All 10 experts agreed that the four domains reflected essential elements of medical professionalism. Interrater reliabilities for all codes and domains had a κ value greater than the 0.60 threshold for good reliability. Most reports (60%, 95% confidence interval = 51%-69%) described disrespectful or offensive communication. Nine codes had a prevalence of less than 1% and were folded into their respective domains resulting in a final taxonomy composed of 13 codes. CONCLUSIONS: The final taxonomy represents a useful tool with demonstrated validity and reliability, opening the door for reliable analysis and systems to promote accountability and behavior change. Given the safety implications of unprofessional behavior, understanding the typology of coworker observations of unprofessional behavior may inform organization strategies to address this threat to patient safety.


Assuntos
Médicos , Má Conduta Profissional , Comunicação , Humanos , Segurança do Paciente , Reprodutibilidade dos Testes
4.
JAMA Surg ; 154(9): 828-834, 2019 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-31215973

RESUMO

Importance: For surgical teams, high reliability and optimal performance depend on effective communication, mutual respect, and continuous situational awareness. Surgeons who model unprofessional behaviors may undermine a culture of safety, threaten teamwork, and thereby increase the risk for medical errors and surgical complications. Objective: To test the hypothesis that patients of surgeons with higher numbers of reports from coworkers about unprofessional behaviors are at greater risk for postoperative complications than patients whose surgeons generate fewer coworker reports. Design, Setting, and Participants: This retrospective cohort study assessed data from 2 geographically diverse academic medical centers that participated in the National Surgical Quality Improvement Program (NSQIP) and recorded and acted on electronic reports of safety events from coworkers describing unprofessional behavior by surgeons. Patients included in the NSQIP database who underwent inpatient or outpatient operations at 1 of the 2 participating sites from January 1, 2012, through December 31, 2016, were eligible. Patients were excluded if they were younger than 18 years on the date of the operation or if the attending surgeon had less than 36 months of monitoring for coworker reports preceding the date of the operation. Data were analyzed from August 8, 2018, through April 9, 2019. Exposures: Coworker reports about unprofessional behavior by the surgeon in the 36 months preceding the date of the operation. Main Outcomes and Measures: Postoperative surgical or medical complications, as defined by the NSQIP, within 30 days of the operation. Results: Among 13 653 patients in the cohort (54.0% [7368 ] female; mean [SD] age, 57 [16] years) who underwent operations performed by 202 surgeons (70.8% [143] male), 1583 (11.6%) experienced a complication, including 825 surgical (6.0%) and 1070 medical (7.8%) complications. Patients whose surgeons had more coworker reports were significantly more likely to experience any complication (0 reports, 954 of 8916 [10.7%]; ≥4 reports, 294 of 2087 [14.1%]; P < .001), any surgical complication (0 reports, 516 of 8916 [5.8%]; ≥4 reports, 159 of 2087 [7.6%]; P < .01), or any medical complication (0 reports, 634 of 8916 [7.1%]; ≥4 reports, 196 of 2087 [9.4%]; P < .001). The adjusted complication rate was 14.3% higher for patients whose surgeons had 1 to 3 reports and 11.9% higher for patients whose surgeons had 4 or more reports compared with patients whose surgeons had no coworker reports (P = .05). Conclusions and Relevance: Patients whose surgeons had higher numbers of coworker reports about unprofessional behavior in the 36 months before the patient's operation appeared to be at increased risk of surgical and medical complications. These findings suggest that organizations interested in ensuring optimal patient outcomes should focus on addressing surgeons whose behavior toward other medical professionals may increase patients' risk for adverse outcomes.


Assuntos
Equipe de Assistência ao Paciente , Complicações Pós-Operatórias/etiologia , Má Conduta Profissional/ética , Má Conduta Profissional/estatística & dados numéricos , Procedimentos Cirúrgicos Operatórios/efeitos adversos , Centros Médicos Acadêmicos , Adulto , Idoso , Estudos de Coortes , Feminino , Humanos , Incidência , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Relações Médico-Paciente , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/fisiopatologia , Valores de Referência , Estudos Retrospectivos , Medição de Risco , Gestão de Riscos , Procedimentos Cirúrgicos Operatórios/métodos
5.
Am J Geriatr Psychiatry ; 26(9): 927-936, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-30146001

RESUMO

OBJECTIVES: Determine whether words contained in unsolicited patient complaints differentiate physicians with and without neurocognitive disorders (NCD). METHODS: We conducted a nested case-control study using data from 144 healthcare organizations that participate in the Patient Advocacy Reporting System program. Cases (physicians with probable or possible NCD) and two comparison groups of 60 physicians each (matched for age/sex and site/number of unsolicited patient complaints) were identified from 33,814 physicians practicing at study sites. We compared the frequency of words in patient complaints related to an NCD diagnostic domain between cases and our two comparison groups. RESULTS: Individual words were all statistically more likely to appear in patient complaints for cases (73% of cases had at least one such word) compared to age/sex matched (8%, p < 0.001 using Pearson's χ2 test, χ2 = 30.21, df = 1) and site/complaint matched comparisons (18%, p < 0.001 using Pearson's χ2 test, χ2 = 17.51, df = 1). Cases were significantly more likely to have at least one complaint with any word describing NCD than the two comparison groups combined (conditional logistic model adjusted odds ratio 20.0 [95% confidence interval 4.9-81.7]). CONCLUSIONS: Analysis of words in unsolicited patient complaints found that descriptions of interactions with physicians with NCD were significantly more likely to include words from one of the diagnostic domains for NCD than were two different comparison groups. Further research is needed to understand whether patients might provide information for healthcare organizations interested in identifying professionals with evidence of cognitive impairment.


Assuntos
Envelhecimento , Transtornos Neurocognitivos/diagnóstico , Defesa do Paciente , Satisfação do Paciente , Inabilitação do Médico , Relações Médico-Paciente , Médicos , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Disfunção Cognitiva/diagnóstico , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente/estatística & dados numéricos , Inabilitação do Médico/estatística & dados numéricos , Médicos/estatística & dados numéricos
6.
JMIR Med Inform ; 5(3): e19, 2017 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-28760726

RESUMO

BACKGROUND: Unsolicited patient complaints can be a useful service recovery tool for health care organizations. Some patient complaints contain information that may necessitate further action on the part of the health care organization and/or the health care professional. Current approaches depend on the manual processing of patient complaints, which can be costly, slow, and challenging in terms of scalability. OBJECTIVE: The aim of this study was to evaluate automatic patient triage, which can potentially improve response time and provide much-needed scale, thereby enhancing opportunities to encourage physicians to self-regulate. METHODS: We implemented a comparison of several well-known machine learning classifiers to detect whether a complaint was associated with a physician or his/her medical practice. We compared these classifiers using a real-life dataset containing 14,335 patient complaints associated with 768 physicians that was extracted from patient complaints collected by the Patient Advocacy Reporting System developed at Vanderbilt University and associated institutions. We conducted a 10-splits Monte Carlo cross-validation to validate our results. RESULTS: We achieved an accuracy of 82% and F-score of 81% in correctly classifying patient complaints with sensitivity and specificity of 0.76 and 0.87, respectively. CONCLUSIONS: We demonstrate that natural language processing methods based on modeling patient complaint text can be effective in identifying those patient complaints requiring physician action.

7.
JAMA Surg ; 152(6): 522-529, 2017 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-28199477

RESUMO

Importance: Unsolicited patient observations are associated with risk of medical malpractice claims. Because lawsuits may be triggered by an unexpected adverse outcome superimposed on a strained patient-physician relationship, a question remains as to whether behaviors that generate patient dissatisfaction might also contribute to the genesis of adverse outcomes themselves. Objective: To examine whether patients of surgeons with a history of higher numbers of unsolicited patient observations are at greater risk for postoperative complications than patients whose surgeons generate fewer such unsolicited patient observations. Design, Setting, and Participants: This retrospective cohort study used data from 7 academic medical centers participating in the National Surgical Quality Improvement Program and the Vanderbilt Patient Advocacy Reporting System from January 1, 2011, to December 31, 2013. Patients older than 18 years included in the National Surgical Quality Improvement Program who underwent inpatient or outpatient operations at 1 of the participating sites during the study period were included. Patients were excluded if the attending surgeon had less than 24 months of data in the Vanderbilt Patient Advocacy Reporting System preceding the date of the operation. Data analysis was conducted from June 1, 2015, to October 20, 2016. Exposures: Unsolicited patient observations for the patient's surgeon in the 24 months preceding the date of the operation. Main Outcomes and Measures: Postoperative surgical or medical complications as defined by the National Surgical Quality Improvement Program within 30 days of the operation of interest. Results: Among the 32 125 patients in the cohort (13 230 men, 18 895 women; mean [SD] age, 55.8 [15.8] years), 3501 (10.9%) experienced a complication, including 1754 (5.5%) surgical and 2422 (7.5%) medical complications. Prior unsolicited patient observations for a surgeon were significantly associated with the risk of a patient having any complication (odds ratio, 1.0063; 95% CI, 1.0004-1.0123; P = .03), any surgical complication (odds ratio, 1.0104; 95% CI, 1.0022-1.0186; P = .01), any medical complication (odds ratio, 1.0079; 95% CI, 1.0009-1.0148; P = .03), and being readmitted (odds ratio, 1.0088, 95% CI, 1.0024-1.0151; P = .007). The adjusted rate of complications was 13.9% higher for patients whose surgeon was in the highest quartile of unsolicited patient observations compared with patients whose surgeon was in the lowest quartile. Conclusions and Relevance: Patients whose surgeons have large numbers of unsolicited patient observations in the 24 months prior to the patient's operation are at increased risk of surgical and medical complications. Efforts to promote patient safety and address risk of malpractice claims should continue to focus on surgeons' ability to communicate respectfully and effectively with patients and other medical professionals.


Assuntos
Barreiras de Comunicação , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/epidemiologia , Garantia da Qualidade dos Cuidados de Saúde , Risco , Cirurgiões/estatística & dados numéricos , Estudos de Coortes , Comunicação , Estudos Transversais , Humanos , Comunicação Interdisciplinar , Colaboração Intersetorial , Imperícia/estatística & dados numéricos , Educação de Pacientes como Assunto , Segurança do Paciente , Satisfação do Paciente , Relações Médico-Paciente , Melhoria de Qualidade/estatística & dados numéricos , Estudos Retrospectivos , Estatística como Assunto , Procedimentos Cirúrgicos Operatórios/estatística & dados numéricos
8.
Jt Comm J Qual Patient Saf ; 42(4): 149-64, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-27025575

RESUMO

BACKGROUND: Health care team members are well positioned to observe disrespectful and unsafe conduct-behaviors known to undermine team function. Based on experience in sharing patient complaints with physicians who subsequently achieved decreased complaints and malpractice risk, Vanderbilt University Medical Center developed and assessed the feasibility of the Co-Worker Observation Reporting System(SM) (CORS (SM)) for addressing coworkers' reported concerns. METHODS: VUMC leaders used a "Project Bundle" readiness assessment, which entailed identification and development of key people, organizational supports, and systems. Methods involved gaining leadership buy-in, recruiting and training key individuals, aligning the project with organizational values and policies, promoting reporting, monitoring reports, and employing a tiered intervention process to address reported coworker concerns. RESULTS: Peer messengers shared coworker reports with the physicians and advanced practice professionals associated with at least one report 84% of the time. Since CORS inception, 3% of the medical staff was associated with a pattern of CORS reports, and 71% of recipients of pattern-related interventions were not named in any subsequent reports in a one-year follow-up period. CONCLUSIONS: Systematic monitoring of documented co-worker observations about unprofessional conduct and sharing that information with involved professionals are feasible. Feasibility requires organizationwide implementation; co-workers willing and able to share respectful, nonjudgmental, timely feedback designed initially to encourage self-reflection; and leadership committed to be more directive if needed. Follow-up surveillance indicates that the majority of professionals "self-regulate" after receiving CORS data.


Assuntos
Documentação , Equipe de Assistência ao Paciente/organização & administração , Segurança do Paciente , Recursos Humanos em Hospital , Competência Clínica , Comunicação , Humanos , Capacitação em Serviço , Liderança , Corpo Clínico
9.
Am J Med Qual ; 31(5): 415-22, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-25916627

RESUMO

One factor that affects surgical team performance is unprofessional behavior exhibited by the surgeon, which may be observed by patients and families and reported to health care organizations in the form of spontaneous complaints. The objective of this study was to assess the relationship between patient complaints and adverse surgical outcomes. A retrospective cohort study used American College of Surgeons National Surgical Quality Improvement Program data from an academic medical center and included 10 536 patients with surgical procedures performed by 66 general and vascular surgeons. The number of complaints for a surgeon was correlated with surgical occurrences (P < .01). Surgeons with more patient complaints had a greater rate of surgical occurrences if the surgeon's aggregate preoperative risk was higher (ß = .25, P < .05), whereas there was no statistically significant relationship between patient complaints and surgical occurrences for surgeons with lower aggregate perioperative risk (ß = -.20, P = .77).


Assuntos
Satisfação do Paciente , Procedimentos Cirúrgicos Operatórios/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente/estatística & dados numéricos , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento , Estados Unidos , Procedimentos Cirúrgicos Vasculares/efeitos adversos
10.
Ann Plast Surg ; 74 Suppl 4: S241-6, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25785388

RESUMO

INTRODUCTION: Unsolicited patient complaints (UPCs) serve as a powerful predictor of increased risk of malpractice claims, and reductions in UPCs, through targeted physician interventions, lower incidence of lawsuits and decrease cost of risk management. We analyzed UPCs, verified by trained counselors in patient relations, to determine the malpractice risk of plastic surgeons, compared to dermatologists, all surgeons, and all physicians, from a national patient complaint registry. METHODS: We examined the patient complaint profiles and risk scores of 31,077 physicians (3935 surgeons, 338 plastic and reconstructive surgeons, and 519 dermatologists), who participated in the Patient Advocacy Reporting System, a national registry of UPCs. Patient complaint data were collected from 70 community and academic hospitals across 29 states, from 2009 to 2012. In addition to determining the specific complaint mix for plastic surgery compared to all physicians, each physician was assigned a patient complaint risk score, based on a proprietary weighted-sum algorithm, with a score higher than 70, indicative of high risk for malpractice claims. Patient complaint profiles and risk scores were compared between all groups, using Wilcoxon rank and χ analysis. P values less than 0.05 were assigned statistical significance. RESULTS: Over this 4-year period, the majority of plastic surgeons (50.8%) did not generate any patient complaints, but those who did received an average of 9.8 complaints from 4.8 patients. The percentage of physicians at high risk for malpractice claims, based upon the Patient Advocacy Reporting System index score of patient complaints, was as follows: all physicians, 2.0%; all surgeons, 4.1%; plastic and reconstructive surgeons, 2.4%; dermatologists, 1.4%. Physicians (from 2012 only) who were identified by their sponsoring institutions as "reconstructive" plastic surgeons (n = 41) were 5 times as likely to have a high risk score, compared to physicians who were identified as "plastic" surgeons (n = 233), and were more likely to practice within an academic health care system that had a level 1 trauma center and a plastic surgery residency program. The overall mix of patient complaints from plastic and reconstructive surgeons was nearly the same as the national cohort of all physicians: care and treatment, 49%; communication, 19%; accessibility and availability, 14%; money or payment issues, 9%; and concern for patient/family, 9%. CONCLUSIONS: "Reconstructive" plastic surgeons are at increased risk for UPCs, compared to most physicians, especially dermatologists. Because UPCs are a robust proxy for malpractice risk, targeted interventions to decrease patient complaints may improve patient satisfaction and reduce malpractice claims and risk management activity. Monitoring UPCs may permit early identification of high-risk surgeons before malpractice claims accumulate.


Assuntos
Imperícia , Defesa do Paciente , Satisfação do Paciente/estatística & dados numéricos , Cirurgiões/estatística & dados numéricos , Cirurgia Plástica/estatística & dados numéricos , Dermatologia/estatística & dados numéricos , Feminino , Humanos , Masculino , Sistema de Registros , Estudos Retrospectivos , Risco , Estados Unidos
11.
Jt Comm J Qual Patient Saf ; 39(10): 435-46, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24195197

RESUMO

BACKGROUND: Patients and their families are well positioned to partner with health care organizations to help identify unsafe and dissatisfying behaviors and performance. A peer messenger process was designed by the Center for Professional and Patient Advocacy at Vanderbilt University Medical Center (Nashville, Tennessee) to address "high-risk" physicians identified through analysis of unsolicited patient complaints, a proxy for risk of lawsuits. METHODS: This retrospective, descriptive study used peer messenger debriefing results from data-driven interventions at 16 geographically disparate community (n = 7) and academic (n = 9) medical centers in the United States. Some 178 physicians served as peer messengers, conducting interventions from 2005, through 2009 on 373 physicians identified as high risk. RESULTS: Most (97%) of the high-risk physicians received the feedback professionally, and 64% were "Responders." Responders' risk scores improved at least 15%, where Nonresponders' scores worsened (17%) or remained unchanged (19%) (p < or = .001). Responders were more often physicians practicing in medicine and surgery than emergency medicine physicians, had longer organizational tenures, and engaged in lengthier first-time intervention meetings with messengers. Years to achieve responder status correlated positively with initial communication-related complaints (r = .32, p < .001), but all complaint categories were equally likely to change over time. CONCLUSIONS: Peer messengers, recognized by leaders and appropriately supported with ongoing training, high-quality data, and evidence of positive outcomes, are willing to intervene with colleagues over an extended period of time. The physician peer messenger process reduces patient complaints and is adaptable to addressing unnecessary variation in other quality/safety metrics.


Assuntos
Comunicação , Capacitação em Serviço/métodos , Satisfação do Paciente , Grupo Associado , Médicos , Conscientização , Retroalimentação , Feminino , Administração de Serviços de Saúde , Humanos , Masculino , Medicina , Relações Médico-Paciente , Qualidade da Assistência à Saúde , Estudos Retrospectivos , Estados Unidos
12.
BMC Physiol ; 6: 3, 2006 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-16524477

RESUMO

BACKGROUND: Climbers on the summit of Mt. Everest are exposed to extreme hypoxia, and the physiological implications are of great interest. Inferences have been made from alveolar gas samples collected on the summit, but arterial blood samples would give critical information. We propose a plan to insert an arterial catheter at an altitude of 8000 m, take blood samples above this using an automatic sampler, store the samples in glass syringes in an ice-water slurry, and analyze them lower on the mountain 4 to 6 hours later. RESULTS: A preliminary design of the automatic sampler was successfully tested at the White Mountain Research Station (altitude 3800 m-4300 m). To determine how much the blood gases changed over a long period, rabbit blood was tonometered to give a gas composition close to that expected on the summit (PO2 4.0 kPa (30 mmHg), PCO2 1.3 kPa (10 mmHg), pH 7.7) and the blood gases were measured every 2 hours for 8 hours both at sea level and 3800 m. The mean changes were PO2 +0.3 to +0.4 kPa (+2 to +3 mmHg), PCO2 0 to +0.13 kPa (+1 mmHg), pH -0.02 to +0.04, base excess -0.7 to +1.2 mM. In practice the delay before analysis should not exceed 4 to 6 hours. The small paradoxical rise in PO2 is presumably caused mainly by contamination of the blood with air. CONCLUSION: We conclude that automatic arterial blood sampling at high altitude is technically feasible and that the changes in the blood gases over a period of several hours are acceptably small.


Assuntos
Altitude , Gasometria/métodos , Hipóxia/sangue , Animais , Artérias/química , Gasometria/instrumentação , Cateterismo Periférico , Humanos , Montanhismo , Coelhos
13.
Psychol Assess ; 15(3): 399-412, 2003 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-14593841

RESUMO

This article details the development and preliminary validation of a multidimensional self-report measure of emotion for 8- to 12-year-old children--the How I Feel (HIF). Item generation and selection occurred via 2 pilot administrations (ns = 250 and 378, respectively). Ten experts provided data on content validity. Exploratory factor analysis and subsequent confirmatory factor analysis with samples of 406, 524, 349, and 349 3rd-through 6th-grade children supported a 3-factor model, including the frequency and intensity of (a) positive emotion, (b) negative emotion, and (c) positive and negative emotion control. Results showed moderate longitudinal stability for 120 children over 2 years. Concurrent validity was established. The HIF can be useful in understanding the interplay between arousal and control in social-emotional adjustment in school-age children.


Assuntos
Nível de Alerta/fisiologia , Emoções/fisiologia , Autoavaliação (Psicologia) , Adaptação Psicológica/fisiologia , Adolescente , Distribuição por Idade , Criança , Análise Fatorial , Feminino , Humanos , Masculino , Modelos Psicológicos , Reprodutibilidade dos Testes , Distribuição por Sexo
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