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1.
J Anal Toxicol ; 2024 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-39087263

RESUMEN

Postmortem toxicology is an ever-changing landscape presenting challenges for toxicologists and medical examiners. Trends can vary for certain benzodiazepines. While diazepam use tends to remain constant, alprazolam and clonazepam ebb and flow depending on prescription trends and street popularity. Novel benzodiazepines like etizolam vary in casework depending on legal restrictions and black-market availability. In May 2022, the first case of the designer benzodiazepine, bromazolam, was detected in Jefferson County Coroner/Medical Examiner's Office (JCCMEO) casework. Between then and December of 2023, an additional nine cases have been observed. Bromazolam, is the brominated analog of the low dose benzodiazepine alprazolam and is likely similar in potency. As bromazolam is a potent benzodiazepine, low concentrations of this novel drug are likely to contribute to CNS depression in opioid overdose cases. We present ten cases in which bromazolam was detected in postmortem samples at the University of Alabama at Birmingham (UAB) toxicology laboratory. The decedents ranged in age from 20 to 41 years of age. Most of the decedents were White (n = 8; 80%) and male (n = 7; 70%). Bromazolam concentrations ranged from 21 to 3,220 ng/mL (mean 401 ng/mL). All but one case were polydrug and all deaths were related to drug toxicity. Fentanyl was detected in 8 of the 10 decedents, with concentrations ranging from <2.5 to 97 ng/mL (mean 30 ng/mL). Additional drugs detected were methamphetamine, ethanol, oxycodone, methadone, cocaine, amphetamine, morphine, and diphenhydramine. While all manners of death were ruled as accidental, bromazolam was included in the cause of death statements in nine of the ten cases. Capturing important emerging drug trends on the death certificate is critical to help inform public health and medical colleagues for preventive measures and treatment in the continued drug epidemic.

3.
Open Forum Infect Dis ; 11(5): ofae231, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38813257

RESUMEN

Injection-related infections continue to rise, particularly in the South. People who inject drugs are increasingly utilizing hospital services for serious injection-related infections but may be discharged to areas without harm reduction services. We explored the availability and travel time to services for HIV and substance use in Alabama.

4.
Forensic Sci Med Pathol ; 20(1): 199-204, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37160632

RESUMEN

Computed tomography (CT)-guided percutaneous needle biopsy of the lung is a well-recognized and relatively safe diagnostic procedure for suspicious lung masses. Systemic air embolism (SAE) is a rare complication of transthoracic percutaneous lung biopsies. Herein, we present a case of an 81-year-old man who underwent CT-guided percutaneous needle biopsy of a suspicious nodule in the lower lobe of the right lung. Shortly after the procedure, the patient coughed up blood which prompted repeat CT imaging. He was found to have a massive cardiac air embolism. The patient became unresponsive and, despite resuscitation efforts, was pronounced dead. The pathophysiology, risk factors, clinical features, radiological evidence, and autopsy findings associated with SAE are discussed, which may, in light of the current literature, assist with the dilemma between assessing procedural complications and medical liability. Given the instances of SAE in the setting of long operative procedures despite careful technical execution, providing accurate and in-depth information, including procedure-related risks, even the rarest but potentially fatal ones, is recommended for informed consent to reduce medicolegal litigation issues.


Asunto(s)
Embolia Aérea , Mala Praxis , Masculino , Humanos , Anciano de 80 o más Años , Embolia Aérea/diagnóstico por imagen , Embolia Aérea/etiología , Embolia Aérea/patología , Pulmón/diagnóstico por imagen , Pulmón/patología , Biopsia con Aguja/efectos adversos , Biopsia con Aguja/métodos , Tomografía Computarizada por Rayos X/efectos adversos , Biopsia Guiada por Imagen/efectos adversos
5.
Acad Pathol ; 10(2): 100083, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37168282

RESUMEN

Beginning 26 January 2022, the United States Medical Licensing Examination Step 1 changed from a numerical score to Pass/Fail. Historically, residency programs have used Step 1 scores as a valuable metric in assessing the competitiveness of applicants. We assessed how residency program criteria will change when evaluating applicants after Step 1 becomes Pass/Fail. A survey was distributed to the program directors of all 144 pathology residency programs accredited by Accreditation Council for Graduate Medical Education. Survey questions evaluated the importance of using Step 1 and Step 2 Clinical Knowledge (CK) scores when assessing applicants. Participants were asked to rank a list of applicant criteria used before and after Step 1 becomes Pass/Fail. Data were analyzed using chi-squared and paired t-tests with significance at P < 0.05. A total of 34 residency program directors (23.6%) responded to the survey. 76.5% (P< 0.001) of responders believed Step 1 scores were able to predict a resident's ability to pass their board exams, while 41.2% believed Step 2 CK could predict a resident's ability to pass board exams and perform clinically in pathology (P = 0.282). 61.8% of responders agreed that an applicant's medical school ranking would become more important (P = 0.001). There were no significant differences in the relative importance of 16 selection criteria after the change of Step 1 to Pass/Fail. It does not appear that Step 2 CK will become more important. Although results are constrained by a 23.6% response rate, it can be a start to guiding future students through residency applications.

7.
Open Forum Infect Dis ; 10(1): ofac708, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36726543

RESUMEN

Background: Increasingly, injection opioid use and opioid use disorder (OUD) are complicated by methamphetamine use, but the impact of stimulant use on the care of people who inject drugs (PWID) with serious injection-related infections (SIRIs) is unknown. The objective of this study was to explore hospital outcomes and postdischarge trends for a cohort of hospitalized PWID to identify opportunities for intervention. Methods: We queried the electronic medical record for patients hospitalized at the University of Alabama at Birmingham with injection drug use-related infections between 1/11/2016 and 4/24/2021. Patients were categorized as having OUD only (OUD), OUD plus methamphetamine use (OUD/meth), or injection of other substance(s) (other). We utilized statistical analyses to assess group differences across hospital outcomes and postdischarge trends. We determined the OUD continuum of care for those with OUD, with and without methamphetamine use. Results: A total of 370 patients met inclusion criteria-many with readmissions (98%) and high mortality (8%). The majority were White, male, and uninsured, with a median age of 38. One in 4 resided outside of a metropolitan area. There were significant differences according to substance use in terms of sociodemographics and hospital outcomes: patients with OUD/meth were more likely to leave via patient-directed discharge, but those with OUD only had the greatest mortality. Comorbid methamphetamine use did not significantly impact the OUD care continuum. Conclusions: The current drug crisis in AL will require targeted interventions to engage a young, uninsured population with SIRI in evidence-based addiction and infection services.

8.
Am J Forensic Med Pathol ; 44(1): 17-20, 2023 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-36103404

RESUMEN

ABSTRACT: When investigating a death potentially due to diabetic ketoacidosis (DKA), it is challenging to assess the glucose level in the blood, but ß-hydroxybutyrate, the most prevalent ketone body in the blood, is relatively stable after death. The aim of this project is to prove that a commercially available ketone meter can be used on postmortem blood samples to aid the diagnosis of DKA in a novel setting (during coroner/medical examiner examination). Samples with acetone detected via gas chromatography were chosen retrospectively to determine whether the meter could detect ketones in postmortem blood (proof-of-concept). In all of the thawed samples, the meter detected an elevated ketone level. Samples were then obtained in a prospective manner to include those with a possible cause of death from DKA along with controls. We correctly identified 16 cases in which death was due to DKA with use of the ketone manner. The ketone levels ranged from 2.6 to 5.4 mmol/L in those cases. The diagnosis was confirmed with a greatly elevated vitreous glucose concentration or glycated hemoglobin concentration. Detecting the presence of ketones while in the autopsy suite allowed for more accurate preliminary diagnoses and utilization of resources.


Asunto(s)
Diabetes Mellitus , Cetoacidosis Diabética , Humanos , Cetonas , Cetoacidosis Diabética/diagnóstico , Autopsia , Estudios Prospectivos , Estudios Retrospectivos , Cuerpos Cetónicos , Glucemia/análisis
9.
Am J Forensic Med Pathol ; 43(2): e12-e14, 2022 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-34743145
10.
Acad Pathol ; 8: 23742895211002783, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34192133

RESUMEN

On May 11, 2020, the Association of American Medical Colleges released recommendations discouraging in-person activities for away rotations and mandating virtual-only residency recruitment interviews. This paper focuses on how residency programs have attempted to adjust to this vastly different application cycle by using social media to reach their applicants. A total of 138 programs were identified through the Electronic Residency Application Services. The presence of Departmental/Residency program Twitter, Instagram, and Facebook as well as web pages offering virtual opportunities was recorded for each program on October 30, 2020. A total of 132 social media accounts were found; the majority of which were on Twitter, while fewer were on Instagram and Facebook. All 138 pathology residency programs had websites. Sixteen (11.5%) of those advertised virtual open houses and 2 (1.4%) advertised virtual subinternships; social media were more often used for advertisement of these virtual experiences. A total of 58 open house opportunities were advertised on Twitter, 21 on Instagram, and 20 on Facebook. Innovative virtual subinternships ranging from 2 to 4 weeks were developed, but only represented 6% of the usual 126 away rotations available. Pathology programs across the country utilized websites and social media as a method of communication to interact with applicants as part of the #Path2Path in 2020 and to provide virtual opportunities in preparation for a drastically different recruitment cycle.

11.
J Infect Dis ; 222(Suppl 5): S499-S505, 2020 09 02.
Artículo en Inglés | MEDLINE | ID: mdl-32877555

RESUMEN

BACKGROUND: Hospital-based strategies that link persons with infectious complications of opioid use disorder (OUD) to medications for OUD (MOUD) are of great interest. The objective of this study is to determine whether a hospital-based protocol would increase the use of MOUD and to identify barriers to MOUD during admission and at the time of discharge. METHODS: This study included participants with a documented or suspected history of injection drug usage receiving care for an infection at the University of Alabama at Birmingham Hospital from 2015 to 2018. The protocol, the intravenous antibiotic and addiction team (IVAT), included Addiction Medicine and Infectious Diseases consultation and a 9-item risk assessment. We quantified MOUD use before and after IVAT and used logistic regression to determine factors associated with MOUD. We explored barriers to MOUD uptake using chart review. RESULTS: A total of 37 and 98 patients met criteria in the pre- and post-IVAT periods, respectively. With IVAT, the percentage with OUD receiving MOUD significantly increased (29% pre-IVAT and 37% post-IVAT; P = .026) and MOUD use was higher in "high risk" participants (62%). Clinical and sociodemographic factors were not associated with MOUD receipt. CONCLUSIONS: A hospital-based protocol may increase the use of MOUD; however, the uptake of MOUD remains suboptimal (<50%).


Asunto(s)
Infecciones Bacterianas/tratamiento farmacológico , Protocolos Clínicos , Tratamiento de Sustitución de Opiáceos/estadística & datos numéricos , Trastornos Relacionados con Opioides/rehabilitación , Abuso de Sustancias por Vía Intravenosa/rehabilitación , Adulto , Alabama , Antibacterianos/uso terapéutico , Infecciones Bacterianas/etiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Trastornos Relacionados con Opioides/complicaciones , Aceptación de la Atención de Salud/estadística & datos numéricos , Admisión del Paciente/estadística & datos numéricos , Grupo de Atención al Paciente/organización & administración , Abuso de Sustancias por Vía Intravenosa/complicaciones
12.
Addict Behav ; 111: 106555, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-32717498

RESUMEN

BACKGROUND: Fatal drug overdose in the United States is a public health crisis fueled by increased opioid and polysubstance use. Few studies have compared the neighborhood-level socioeconomic characteristics associated with overdoses of various substance classes and, to our knowledge, no investigation has yet assessed these factors in relation to polysubstance overdoses. Further, no study has determined whether socioeconomic conditions predict other contextually relevant aspects of overdoses such as whether they occur at-home or out-of-home. METHODS: Overdose data (2015-2018) were obtained from the Coroner/Medical Examiner's Office of Jefferson County, Alabama. The toxicology results of decedents with a known overdose locations (N = 768) were assessed for the presence of synthetic opioids, natural and semi-synthetic opioids, heroin, stimulants, benzodiazepines, and alcohol. Socioeconomic characteristics were obtained from the Unites States Census Bureau at the census tract level. RESULTS: Stimulant overdoses occurred in neighborhoods with the highest rates of disadvantage relative to other substance and polysubstance overdose types. The majority of included overdoses occurred at-home (63.7%) and an index of socioeconomic disadvantage predicted overdose rates for both at-home and out-of-home overdoses. Heroin overdose deaths were more likely to occur at-home while polysubstance stimulant-heroin overdoses were more common out-of-home. CONCLUSIONS: An index of socioeconomic disadvantage was generally predictive of overdose, regardless of the setting in which the overdose occurred (in-home vs. out-of-home). The associations between neighborhood-level socioeconomic characteristics and fatal overdose can be tailored by substance type to create targeted interventions. Overdose setting may be an important consideration for future policy efforts, as overdoses were nearly twice as likely to occur at-home.


Asunto(s)
Sobredosis de Droga , Preparaciones Farmacéuticas , Alabama , Analgésicos Opioides , Sobredosis de Droga/epidemiología , Humanos , Kentucky , Factores Socioeconómicos , Tennessee , Estados Unidos , Wisconsin
13.
Int J Drug Policy ; 79: 102736, 2020 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-32278255

RESUMEN

BACKGROUND: Elements of the physical environment have been shown to influence health behaviors including drug use and overdose mortality. Throughout the opioid epidemic in the United States, rural regions have been disproportionately affected by opioid overdose. Although the relationship between the urban built environment and opioid overdose has been established, little is known as to how trends may differ in rural areas. METHODS: Risk terrain modeling was used as a spatial analytical approach to assess environmental features that significantly increase the risk of opioid overdose in Jefferson County, Alabama. Spatial risk assessments were conducted for urban and rural regions as well as for the county as a whole. Criminogenic, opioid-related, and community variables were included and compared across spatial risk models. RESULTS: The geographic context, rural or urban, influenced the relationship between environmental features and opioid overdose. In rural areas, community features such as bus stops and public schools were related to the occurrence of opioid overdose. In urban areas, inpatient treatment centers, transitional living facilities, express loan establishments, and liquor vendors were significantly related to the locations of opioid overdose. CONCLUSION: Risk terrain modeling can be used to locate high-risk areas for opioid overdose while identifying factors that are contributing to the risk of events occurring in communities. The patterns of overdose risk differ in rural and urban contexts and may be used to inform the placement of treatment and prevention resources.

14.
Am J Forensic Med Pathol ; 40(2): 99-101, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-30789365

RESUMEN

In 2005, the National Association of Medical Examiners approved the Forensic Autopsy Performance Standards. Standard B3.7 indicates that a forensic pathologist shall perform a forensic autopsy when the death is by apparent intoxication by alcohol, drugs, or poison.The Jefferson County Coroner/Medical Examiner Office has observed an increase in our caseload by 10% per year since 2012. We designed a study to determine if a pathologist could correctly classify the cause of death (COD) and manner of death (MOD) of suspected drug-related deaths without information from the internal examination. The determination of the COD and MOD was then compared with the case file, which includes information from the internal examination and microscopy, to determine agreement between the case file and the reclassification. The percent correct for COD and MOD was calculated, and kappa values were calculated for MOD.The pathologists were able to correctly classify the COD in 73% of cases. For MOD, 2 pathologists achieved substantial agreement between the test cases and the actual case file. The third pathologist had moderate agreement. These findings indicate that a full postmortem examination is necessary to correctly classify the COD/MOD in cases of suspected drug toxicity.Our null hypothesis is that a full autopsy is not necessary to correctly classify the COD and MOD in cases of drug toxicity.


Asunto(s)
Médicos Forenses , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/diagnóstico , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/mortalidad , Variaciones Dependientes del Observador , Trastornos Relacionados con Sustancias/mortalidad , Adulto , Anciano , Bases de Datos Factuales , Sobredosis de Droga/diagnóstico , Sobredosis de Droga/mortalidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven
15.
J Forensic Sci ; 63(4): 1155-1159, 2018 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-29139116

RESUMEN

Obesity can involve any organ system and compromise the overall health of an individual, including premature death. Despite the increased risk of death associated with being obese, obesity itself is infrequently indicated on the death certificate. We performed an audit of our records to identify how often "obesity" was listed on the death certificate to determine how our practices affected national mortality data collection regarding obesity-related mortality. During the span of nearly 25 years, 0.2% of deaths were attributed to or contributed by obesity. Over the course of 5 years, 96% of selected natural deaths were likely underreported as being associated with obesity. We present an algorithm for certifiers to use to determine whether obesity should be listed on the death certificate and guidelines for certifying cases in which this is appropriate. Use of this algorithm will improve vital statistics concerning the role of obesity in causing or contributing to death.


Asunto(s)
Causas de Muerte , Certificado de Defunción , Obesidad/epidemiología , Estadísticas Vitales , Adulto , Anciano , Anciano de 80 o más Años , Alabama/epidemiología , Algoritmos , Índice de Masa Corporal , Enfermedades Cardiovasculares/mortalidad , Trastornos Cerebrovasculares/mortalidad , Bases de Datos Factuales , Femenino , Humanos , Clasificación Internacional de Enfermedades , Masculino , Persona de Mediana Edad , Isquemia Miocárdica/mortalidad , Enfermedades Respiratorias/mortalidad , Adulto Joven
16.
Arch Pathol Lab Med ; 141(6): 824-829, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28362157

RESUMEN

CONTEXT: - Testicular germ cell tumors with lymphovascular invasion (LVI) are staged pT2, and those with spermatic cord involvement are staged pT3. OBJECTIVE: - To study the clinical significance of LVI within the spermatic cord without direct involvement of the cord soft tissues. DESIGN: - A retrospective, multi-institutional review was performed on testicular GCTs with spermatic cord LVI in the absence of cord soft tissue invasion. RESULTS: - Forty-four germ cell tumors had LVI in the spermatic cord without soft tissue invasion; 37 of 44 patients (84%) had nonseminomatous germ cell tumors (NSGCT), and 7 (16%) had pure seminomas. Patients with NSGCTs and spermatic cord LVI had worse clinical outcomes compared with patients with pure seminoma and spermatic cord LVI (P = .008). We then compared patients with NSGCTs and spermatic cord LVI (n = 37) to patients with NSGCTs and LVI limited to the testis (n = 32). A significantly greater percentage of patients with LVI in the spermatic cord presented with advanced clinical stage (76% versus 50%; P = .01). There was no statistically significant difference in disease recurrence/progression or death between patients with spermatic cord LVI and patients with LVI limited to the testis (P = .40; P = .50). There was no significant difference in the presence of embryonal dominant histology (P = .30) or rete testis invasion (P = .50) between the 2 groups. More hilar soft tissue invasion was seen in patients with LVI present in the spermatic cord (P = .004). CONCLUSIONS: - In patients with NSGCTs, LVI in the spermatic cord, without soft tissue invasion, is associated with worse clinical stage at presentation compared with patients with LVI confined to the testis.


Asunto(s)
Neoplasias de Células Germinales y Embrionarias/patología , Seminoma/patología , Neoplasias Testiculares/patología , Adolescente , Adulto , Humanos , Masculino , Persona de Mediana Edad , Invasividad Neoplásica , Estadificación de Neoplasias , Cordón Espermático/patología , Testículo/patología , Adulto Joven
17.
J Clin Apher ; 32(5): 311-318, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27717013

RESUMEN

Thrombotic thrombocytopenic purpura (TTP) has >90% mortality without therapeutic plasma exchange (TPE). Despite TPE, approximately 10% of patients still die, presumably from cardiac ischemia. We sought clinical or laboratory parameters associated with death by reviewing the records of all patients hospitalized with acquired TTP in our institution for 10 years, and collect demographics and results for hemoglobin, platelet count, creatinine, lactate dehydrogenase, transaminases, total bilirubin, creatinine kinase (CK), CK-MB, and troponin I. Sixty-eight patients were admitted 88 times, and 11 died. Survivors and non-survivors were similar in terms of sex, ethnicity, thrombocytopenia, and degree of anemia at presentation, while the latter were older, had worse renal function and higher CK, CK-MB, and troponin I (univariate analysis). However, only troponin I remained significant on multivariate analyses. We propose that patients with TTP should be monitored with troponin I to detect significant myocardial ischemia that could predict death despite TPE.


Asunto(s)
Púrpura Trombocitopénica Trombótica/sangre , Púrpura Trombocitopénica Trombótica/mortalidad , Troponina I/sangre , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores/sangre , Creatina Quinasa/sangre , Forma MB de la Creatina-Quinasa/sangre , Femenino , Humanos , Masculino , Persona de Mediana Edad , Intercambio Plasmático , Pronóstico , Púrpura Trombocitopénica Trombótica/terapia , Estudios Retrospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad , Adulto Joven
18.
J Forensic Sci ; 62(1): 99-102, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-27874190

RESUMEN

Due to increasing caseloads and inadequate staffing, the burden on Coroner/Medical Examiner Offices to comply with recommended autopsy limits for forensic pathologists (FPs) has been difficult. Since 2006, pathologists at the University of Alabama at Birmingham have performed select autopsies for the Alabama Department of Forensic Sciences. Each case was reviewed by a state FP and scene investigator to determine appropriateness for referral. All referred cases received full postmortem examination including microscopic examination and collection of toxicological samples, and toxicology was ordered by the referring FP as appropriate. The final cause and manner of death were determined by the referring state FP after review of all findings. A majority of the 421 cases were ruled accidental deaths (233), most due to drug toxicity. Of the 178 natural deaths, 118 were attributed to cardiovascular disease. Outsourcing select forensic cases can be educational and an effective tool to manage workflow without compromising quality.


Asunto(s)
Autopsia , Médicos Forenses , Servicios Externos , Universidades , Alabama , Causas de Muerte , Patologia Forense , Humanos , Carga de Trabajo
19.
J Clin Apher ; 31(6): 516-522, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26801326

RESUMEN

Apheresis was first performed as a therapeutic procedure in the 1950s. The first national therapeutic apheresis (TA) registry was established in Canada in 1981 and other national registries followed, including two attempts at establishing an international TA registry. There is no national registry in the United States. Our large, academic, tertiary hospital has a very active TA service. We created a TA database to track all procedures performed by the apheresis service by transferring data from paper appointment logs and the electronic medical records into a Microsoft Access database. Retrospective data from each TA procedure performed at UAB from January 1, 2003 through December 31, 2012 were entered, including the type of procedure, indication, date, and patient demographics. Microsoft Excel was used for data analysis. During the 10-year period, our TA service treated 1,060 patients and performed 11,718 procedures. Of these patients, 70% received therapeutic plasma exchange (TPE), 21% received extracorporeal photopheresis (ECP), 4.5% received red cell exchange (RCE), 4.2% received leukocytapheresis, and 0.6% underwent platelet depletion. Among the procedures, 54% were TPEs, 44% were ECPs, 1.3% were RCEs, 0.5% were leukocytaphereses, and 0.1% were platelet depletions. According to the current literature, national and international TA use is underreported. We believe that the UAB TA registry provides useful information about TA practices in our region and can serve as a model for other institutions. Furthermore, data from multiple institutional registries can be used for clinical research to increase the available evidence for the role of TA in various conditions. J. Clin. Apheresis 31:516-522, 2016. © 2015 Wiley Periodicals, Inc.


Asunto(s)
Eliminación de Componentes Sanguíneos/métodos , Eliminación de Componentes Sanguíneos/estadística & datos numéricos , Sistema de Registros , Centros Médicos Académicos , Bases de Datos Factuales/estadística & datos numéricos , Humanos , Sistema de Registros/estadística & datos numéricos , Estudios Retrospectivos , Centros de Atención Terciaria , Estados Unidos
20.
Acad Forensic Pathol ; 6(1): 12-18, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31239869

RESUMEN

For decades, forensic scientists have sought a means of estimating the postmortem interval using laboratory analyses. The best known of these attempts uses a linear regression formula based on the increasing concentration of potassium ions in vitreous humor following death. Like all laboratory analyses, the determination of a potassium concentration is subject to pre-analytical, analytical, and post-analytical errors. Any error is magnified when entered into a regression formula that itself is subject to statistical variation, typically with a 95% confidence interval. Estimating the postmortem interval based solely on the concentration of potassium in vitreous humor proved too simplistic for accurate modeling of the myriad factors that influence postmortem changes. Research continues, using more complicated algorithms involving multivariate ion and chemical analyses and genomic sequencing of the postmortem biome. However refined estimates of the postmortem interval based on laboratory analysis become, sound medical practice will still require the integration of scene findings and information concerning the last time that a given decedent was known to be alive with the results of postmortem examination and laboratory analyses into a medical opinion concerning the postmortem interval.

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