scholarly journals Troponin, A Predictor of Mortality in Methadone Exposure: An Observational Prospective Study

2021 ◽  
Author(s):  
Mehdi Sheibani ◽  
Akram Alsadat Mirfallah Nassiri ◽  
Amirhossein Abedtash ◽  
Rebecca McDonald ◽  
Nasim Zamani ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Intensive Care Unit Admission ◽  
Cardiac Troponin ◽  
Troponin I ◽  
Methadone Maintenance ◽  
Characteristic Curve ◽  
Public Health Problem ◽  
Global Public Health ◽  
Cutoff Value

Background Methadone poisoning/overdose is a global public health problem. We aimed to determine whether methadone poisoning increased cardiac troponin and whether high‐sensitivity cardiac troponin I (hs‐cTnI) levels predicted the need for intensive care unit admission, intubation, and mortality. Methods and Results This observational, prospective single‐center study was done at Loghman‐Hakim Hospital (Tehran, Iran) from June 2018 until February 2019. Patients aged >14 years admitted with a diagnosis of methadone exposure were included. Patients were excluded if they had coexisting conditions associated with elevated hs‐cTnI levels. An ECG and hs‐cTnI levels were obtained on emergency department presentation. Patients were followed up on their need for intubation, intensive care unit admission, and in‐hospital mortality. Of 245 included patients (186 [75.9%] men; median age, 33 years), most referred to loss of consciousness (210 cases, 89%). Nineteen (7.7%) patients had hs‐cTnI levels of >0.1 ng/mL (positive), and 41 (16.7%) had borderline levels of 0.019 to 0.1 ng/mL. Twenty‐three (9.3%) cases were admitted to the intensive care unit, 21 (8.5%) needed intubation, and 5 (2%) died during hospitalization. An hs‐cTnI cutoff value of 0.019 ng/mL independently predicted mortality. For optimal concomitant sensitivity and specificity, receiver operating characteristic curve analysis was conducted and showed that hs‐cTnI had an independent significant association with mortality, with a cutoff value of 0.0365 ng/mL (odds ratio, 38.1; 95% CI, 2.3–641.9; P <0.001). Conclusions Methadone exposure/toxicity is a newly identified cause of elevated hs‐cTnI. Values >0.019 ng/mL, and particularly >0.0365 ng/mL, of hs‐cTnI predicted mortality in our sample. Future studies should measure troponin levels in methadone maintenance treatment clients to assess the risk of myocardial injury from long‐term exposure.

scholarly journals Prognostic Value of Initial Elevation in Cardiac Troponin I Level in Critically Ill Patients Without Acute Coronary Syndrome

2015 ◽  
Vol 35 (2) ◽  
pp. e1-e10 ◽  
Author(s):  
Michael Liu ◽  
Merita Shehu ◽  
Edmund Herrold ◽  
Henry Cohen
Keyword(s):  
Intensive Care Unit ◽  
Acute Coronary Syndrome ◽  
Intensive Care ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Cardiac Troponin ◽  
Troponin I ◽  
Cardiac Troponin I ◽  
Troponin Level ◽  
Coronary Syndrome

BackgroundCardiac troponin I levels are often obtained to help rule out acute coronary syndrome.ObjectiveTo determine if elevation of troponin level within 24 hours for patients without acute coronary syndrome admitted to the intensive care unit provides important prognostic information. METHODS Patients without acute coronary syndrome admitted to the intensive care unit were prospectively divided into 2 groups according to highest serum level of cardiac troponin I within 24 hours of admission (elevated &gt; 0.049 ng/mL; control ≤ 0.049 ng/mL). Hospital mortality, incidence of intubation, and other parameters were compared between the 2 groups.ResultsPatients with elevated troponin level (n = 40) had higher mortality than did control patients (n = 50) (35% vs 12%; P = .01). Compared with control patients, patients with elevated levels were more likely to be intubated (41% vs 17%; P = .02).ConclusionCritically ill patients without acute coronary syndrome with elevated levels of cardiac troponin I at admission had higher mortality and more intubations than did control patients.

scholarly journals Mild thrombocytopenia indicating maternal organ damage in pre‐eclampsia: a cross‐sectional study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Michinori Mayama ◽  
Mamoru Morikawa ◽  
Takashi Yamada ◽  
Takeshi Umazume ◽  
Kiwamu Noshiro ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Platelet Count ◽  
Intensive Care Unit Admission ◽  
Neonatal Intensive Care Unit ◽  
Preterm Delivery ◽  
Neonatal Intensive Care ◽  
Organ Damage ◽  
Severe Thrombocytopenia ◽  
Relative Risks

Abstract Background Currently, there is a disagreement between guidelines regarding platelet count cut-off values as a sign of maternal organ damage in pre-eclampsia; the American College of Obstetricians and Gynecologists guidelines state a cut-off value of < 100 × 109/L; however, the International Society for the Study of Hypertension in Pregnancy guidelines specify a cut-off of < 150 × 109/L. We evaluated the effect of mild thrombocytopenia: platelet count < 150 × 109/L and ≥ 100 × 109/L on clinical features of pre-eclampsia to examine whether mild thrombocytopenia reflects maternal organ damage in pre-eclampsia. Methods A total of 264 women were enrolled in this study. Participants were divided into three groups based on platelet count levels at delivery: normal, ≥ 150 × 109/L; mild thrombocytopenia, < 150 × 109/L and ≥ 100 × 109/L; and severe thrombocytopenia, < 100 × 109/L. Risk of severe hypertension, utero-placental dysfunction, maternal organ damage, preterm delivery, and neonatal intensive care unit admission were analyzed based on platelet count levels. Estimated relative risk was calculated with a Poisson regression analysis with a robust error. Results Platelet counts indicated normal levels in 189 patients, mild thrombocytopenia in 51 patients, and severe thrombocytopenia in 24 patients. The estimated relative risks of severe thrombocytopenia were 4.46 [95 % confidence interval, 2.59–7.68] for maternal organ damage except for thrombocytopenia, 1.61 [1.06–2.45] for preterm delivery < 34 gestational weeks, and 1.35 [1.06–1.73] for neonatal intensive care unit admission. On the other hand, the estimated relative risks of mild thrombocytopenia were 0.97 [0.41–2.26] for maternal organ damage except for thrombocytopenia, 0.91 [0.62–1.35] for preterm delivery < 34 gestational weeks, and 0.97 [0.76–1.24] for neonatal intensive care unit admission. Conclusions Mild thrombocytopenia was not associated with severe features of pre-eclampsia and would not be suitable as a sign of maternal organ damage.

scholarly journals Early prolonged neutrophil activation in critically ill patients with sepsis

2021 ◽  
Vol 27 (2) ◽  
pp. 192-200
Author(s):  
Sanna Törnblom ◽  
Sara Nisula ◽  
Suvi T Vaara ◽  
Meri Poukkanen ◽  
Sture Andersson ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Intensive Care Unit Admission ◽  
Plasma Concentrations ◽  
Neutrophil Activation ◽  
Early Event ◽  
Heparin Binding ◽  
Activation Markers ◽  
Heparin Binding Protein ◽  
Pro Inflammatory Cytokines

We hypothesised that plasma concentrations of biomarkers of neutrophil activation and pro-inflammatory cytokines differ according to the phase of rapidly evolving sepsis. In an observational study, we measured heparin-binding protein (HBP), myeloperoxidase (MPO), IL-6 and IL-8 in 167 sepsis patients on intensive care unit admission. We prospectively used the emergence of the first sepsis-associated organ dysfunction (OD) as a surrogate for the sepsis phase. Fifty-five patients (of 167, 33%) developed the first OD > 1 h before, 74 (44%) within ± 1 h, and 38 (23%) > 1 h after intensive care unit admission. HBP and MPO were elevated at a median of 12 h before the first OD, remained high up to 24 h, and were not associated with sepsis phase. IL-6 and IL-8 rose and declined rapidly close to OD emergence. Elevation of neutrophil activation markers HBP and MPO was an early event in the evolution of sepsis, lasting beyond the subsidence of the pro-inflammatory cytokine reaction. Thus, as sepsis biomarkers, HBP and MPO were not as prone as IL-6 and IL-8 to the effect of sample timing.

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