High sensitivity Troponin-I levels in asymptomatic hemodialysis patients.

Reduction in renal clearance and removal by hemodialysis adversely affect the level and utility of high-sensitivity troponin I (hsTnI) for diagnosis of acute myocardial infarction (AMI) in hemodialysis (HD) patients. Furthermore, HD process itself might cause undesirable myocardial injury and enhance post HD hsTnI levels. This comparative cross-sectional study was conducted to compare the hsTnI levels between 100 asymptomatic HD patients and their 107 matched non-chronic kidney disease (CKD) population. The hsTnI levels in HD group were higher than non-CKD group [median (IQR): 54.3 (20.6-152.7) vs. 18 (6.2-66.1) ng/L, p < .001)]. The hsTnI levels reduced after HD process from 54.3 (20.6-152.7) ng/L in pre-HD to 27.1 (12.3-91.4) ng/L in post-HD (p = .015). Of interest, 25% of HD patients had increment of hsTnI after HD and might represent HD-induced myocardial injury. The significant risk factors were high hemoglobin level and high blood flow rate. In conclusion, the baseline hsTnI levels in asymptomatic HD patients were higher than non-CKD population. The dynamic change of hsTnI over time would be essential for the diagnosis of AMI. Certain numbers of asymptomatic HD patients had HD-induced silent myocardial injury and should be aggressively investigated to prevent further cardiovascular mortality.

Randomized Controlled Trial of Ultrasound-guided Fluid Resuscitation of Sepsis-Induced Hypoperfusion and Septic Shock.

INTRODUCTION: The ultrasound measurement of inferior vena cava (IVC) diameter change during respiratory phase to guide fluid resuscitation in shock patients is widely performed, but the benefit on reducing the mortality of sepsis patients is questionable. The study objective was to evaluate the 30-day mortality rate of patients with sepsis-induced tissue hypoperfusion (SITH) and septic shock (SS) treated with ultrasound-guided fluid management (UGFM) using ultrasonographic change of the IVC diameter during respiration compared with those treated with the usual-care strategy. METHODS: This was a randomized controlled trial conducted in an urban, university-affiliated tertiary-care hospital. Adult patients with SITH/SS were randomized to receive treatment with UGFM using respiratory change of the IVC (UGFM strategy) or with the usual-care strategy during the first six hours after emergency department (ED) arrival. We compared the 30-day mortality rate and other clinical outcomes between the two groups. RESULTS: A total of 202 patients were enrolled, 101 in each group (UGFM vs usual-care strategy) for intention-to-treat analysis. There was no significant difference in 30-day overall mortality between the two groups (18.8% and 19.8% in the usual-care and UGFM strategy, respectively; p > 0.05 by log rank test). Neither was there a difference in six-hour lactate clearance, a change in the sequential organ failure assessment score, or length of hospital stay. However, the cumulative fluid amount given in 24 hours was significantly lower in the UGFM arm. CONCLUSION: In our ED setting, the use of respiratory change of IVC diameter determined by point-of-care ultrasound to guide initial fluid resuscitation in SITH/SS ED patients did not improve the 30-day survival probability or other clinical parameters compared to the usual-care strategy. However, the IVC ultrasound-guided resuscitation was associated with less amount of fluid used.

Physician professionalism: definition from a generation perspective.

OBJECTIVES: The primary objective of this study was to determine whether consensuses on the definition of emergency physician professionalism exist within and among four different generations. Our secondary objective was to describe the most important characteristic related to emergency physician professionalism that each generation values. METHODS: We performed a cross-sectional survey study, using a card-sorting technique, at the emergency departments of two university-based medical centers in the United States. The study was conducted with 288 participants from February to November 2017. Participants included adult emergency department patients, emergency medicine supervising physicians, emergency medicine residents, emergency department nurses, and fourth- and second-year medical students who independently ranked 39 cards that represent qualities related to emergency physician professionalism. We used descriptive statistics, quantitative cultural consensuses and Spearman's correlation coefficients to analyze the data. RESULTS: We found cultural consensuses on emergency physician professionalism in Millennials and Generation X overall, with respect for patients named the most important quality (eigenratio 5.94, negative competency 0%; eigenratio 3.87, negative competency 1.64%, respectively). There were consensuses on emergency physician professionalism in healthcare providers throughout all generations, but no consensuses were found across generations in the patient groups. CONCLUSIONS: While younger generations and healthcare providers had consensuses on emergency physician professionalism, we found that patients had no consensuses on this matter. Medical professionalism curricula should be designed with an understanding of each generation's values concerning professionalism. Future studies using qualitative methods across specialties, to assess definitions of medical professionalism in each generation, should be pursued.