Peak Creatinine Kinase Research Articles

Benefit of prehospital electrocardiogram on door-to-device time in ST-segment elevation myocardial infarction with cardiogenic shock: Data from the Kanagawa Acute Cardiovascular Registry

BackgroundThe benefit of prehospital 12‑lead electrocardiogram (PH-ECG) performed by emergency medical service personnel at the site of first medical contact (FMC) in patients with ST-segment elevation myocardial infarction (STEMI) with cardiogenic shock (CS-STEMI) remains unclear. This study aimed to investigate the effect of PH-ECG on door-to-device time in patients with CS-STEMI. MethodsThis study enrolled CS-STEMI (Killip class IV) patients who were transferred directly to hospitals by ambulance (n = 517) from the Kanagawa Acute Cardiovascular Registry database. Patients were divided into PH-ECG (+) (n = 270) and PH-ECG (−) (n = 247) groups. Patients who experienced out-of-hospital cardiac arrest, who did not undergo emergent coronary intervention, or whose data were missing were excluded. Patient characteristics, FMC-to-door time, door-to-device time, and in-hospital mortality were compared between the groups. ResultsThe patient backgrounds of the PH-ECG (+) and PH-ECG (−) groups were comparable. The peak creatinine kinase level was greater in the PH-ECG (+) group than in the PH-ECG (−) group [2756 (1292–6009) IU/ml vs. 2270 (957–5258) IU/ml, p = 0.048]. The FMC-to-door time was similar between the two groups [25 (20−33) min vs. 27 (20–35) min, p = 0.530], while the door-to-device time was significantly shorter in the PH-ECG group [74 (52–103) min vs. 83 (62–111) min, p = 0.007]. In-hospital mortality did not differ between the two groups (18 % vs. 21 %, p = 0.405). Multivariable logistic regression analyses revealed that PH-ECG (+) was independently associated with a door-to-device time < 60 min [odds ratio (95 % confidence intervals): 1.88 (1.24–2.83), p = 0.003]. ConclusionsPH-ECG was significantly associated with shorter door-to-device times in patients with CS-STEMI. Further studies with larger populations and more defined protocols are required to evaluate the utility of PH-ECG in patients with CS-STEMI.

Creatinine kinase-myocardial band (CK-MB) to creatinine kinase (CK) ratio for ST-segment elevation myocardial infarction in the era of the universal definition.

Although serum troponin level is the gold standard under the universal definition of acute myocardial infarction (AMI), serum creatinine kinase (CK) and creatine kinase-myocardial band (CK-MB) is still measured in clinical practice as the compliment of troponin level. The purpose of this retrospective study is to illustrate the dramatic change of CK-MB/CK ratio by comparing CK-MB/CK ratio in patients with ST-segment elevation myocardial infarction (STEMI) among ≤ 24h before reaching peak CK, peak CK, ≤ 24h after reaching peak CK, and 24-48h after reaching peak CK. We included 502 patients with STEMI. We calculated each average CK-MB/CK ratio at ≤ 24h before reaching peak CK, peak CK, ≤ 24h after reaching peak CK, and 24-48h after reaching peak CK. The average values were compared using Friedman test. The average CK-MB/CK ratio at ≤ 24h before reaching peak CK, peak CK, ≤ 24h after reaching peak CK, and 24-48h after reaching peak CK was 0.096 (9.6% of CK), 0.098 (9.8% of peak CK), 0.076 (7.6% of CK), and 0.028 (2.8% of CK), respectively. The Friedman test suggested that the CK-MB/CK ratio significantly declined after reaching peak CK (p < 0.001). In conclusion, the CK-MB/CK ratio was around 0.1 (10% of CK) until CK-MB and CK reached the peak, but dropped sharply after reaching peak CK. The CK-MB/CK ratio less than 0.1 (10% of CK) cannot be used to rule out the possibility of AMI, when the onset of symptom is unclear or late presentation.

The Role of Index of Microcirculatory Resistance in Left Anterior Descending Artery ST Segment Elevation Myocardial Infarction Patients after Primary Percutaneous Coronary Intervention.

Background: Our aim was to assess the relationship of the index of microvascular resistance (IMR) in left anterior descending (LAD) artery involved STEMI patients. Methods: Data of 316 STEMI patients who had undergone primary percutaneous coronary intervention (PCI) were collected from three cardiovascular centers from 2005 to 2015. In total, 246 patients with LAD STEMI were enrolled for IMR evaluation. Patients were divided into two groups respective of the cut-off IMR value of 30. All-cause mortality, left ventricular function, improvement of systolic function, and cardiac biomarkers were analyzed and compared. Results: A total of 246 patients were enrolled. The number of patients in the IMR above 30 group was 93 and below 30 was 153. The mean ages for each group were 57.91 ± 11.99 and 54 ± 10.63, respectively. The peak creatinine kinase (CK) (3936.85 ± 2827.32 IU/L vs. 2218.08 ± 2310.41 IU/L, p < 0.001) and CKmb (336.15 ± 195.08 mg/mL vs. 231.53 ± 179.53 mg/mL, p < 0.001) levels were higher for an IMR above the 30 group. The left ventricular ejection fraction (LVEF) (44.57 ± 6.685% vs. 47.35 ± 8.17%, p = 0.006) and improvement of LVEF (2.81 ± 7.135% vs. 5.88 ± 7.65%, p = 0.004) was lower in the IMR above 30 group. All-cause mortality (7.5% vs. 1.3%, p = 0.012) was higher in the IMR above 30 group, and a Cox regression analysis showed that an IMR above 30 was a poor prognostic factor regarding all-cause mortality (HR: 5.151, 95% CI 1.062-24.987, p = 0.042) even after adjusting for classical clinical risk factors. Conclusions: An elevated IMR value represented larger infarct size, more severe LV dysfunction, and higher mortality in LAD STEMI patients after successful PCI.

Abstract 12718: ST Segment Elevation Myocardial Infarction Case With a Novel Therapy

History: A 78-year-old man presented with anterior ST-segment elevation. Coronary angiography demonstrated an occluded left anterior descending coronary artery (LAD Figure 1A) with stenosis of the left circumflex (Cx) coronary artery. Procedure: The LAD was crossed with a workhorse wire (Figure 1B). Predilation restored the flow in the LAD and two diagonal branches (Figure 1C). After assessing the lesion with intravascular imaging (Figure 1D), two drug-eluting stents (DES) were deployed with provisional technique (Figure 1E). The diagonal was rewired and dilated with a 2.0 mm balloon (Figure 1F). A 3.5x20 mm DES was deployed covering the proximal LAD lesion (Figure 1G). The Cx ostium appeared pinched, but the diastolic pressure ratio was 0.95, hence no PCI was performed. Given the large MI size, we administered super saturated oxygen (SSO2). A 5F FR5 catheter was inserted into the LM ostium and SSO2 was administered for 1 hour. An excellent final angiographic result was achieved with TIMI 3 flow and well-expanded stents (Figure 1H). Peak creatinine kinase was 5840 U/l. Magnetic resonance imaging on the next day showed small thrombi, prominent microvascular obstruction in the mid LAD territory, and transmural infarction (Figure 1I). Left ventricular ejection fraction of 39% with normal left ventricular volume. The patient was discharged 3 days later on dual antiplatelet therapy and warfarin and referred to cardiac rehabilitation. Conclusion: “Time is muscle”, hence immediate revascularization is essential. Large anterior STEMIs may benefit from SSO2.

Constructing, validating, and updating machine learning models to predict survival in children with Ebola Virus Disease.

Ebola Virus Disease (EVD) causes high case fatality rates (CFRs) in young children, yet there are limited data focusing on predicting mortality in pediatric patients. Here we present machine learning-derived prognostic models to predict clinical outcomes in children infected with Ebola virus. Using retrospective data from the Ebola Data Platform, we investigated children with EVD from the West African EVD outbreak in 2014-2016. Elastic net regularization was used to create a prognostic model for EVD mortality. In addition to external validation with data from the 2018-2020 EVD epidemic in the Democratic Republic of the Congo (DRC), we updated the model using selected serum biomarkers. Pediatric EVD mortality was significantly associated with younger age, lower PCR cycle threshold (Ct) values, unexplained bleeding, respiratory distress, bone/muscle pain, anorexia, dysphagia, and diarrhea. These variables were combined to develop the newly described EVD Prognosis in Children (EPiC) predictive model. The area under the receiver operating characteristic curve (AUC) for EPiC was 0.77 (95% CI: 0.74-0.81) in the West Africa derivation dataset and 0.76 (95% CI: 0.64-0.88) in the DRC validation dataset. Updating the model with peak aspartate aminotransferase (AST) or creatinine kinase (CK) measured within the first 48 hours after admission increased the AUC to 0.90 (0.77-1.00) and 0.87 (0.74-1.00), respectively. The novel EPiC prognostic model that incorporates clinical information and commonly used biochemical tests, such as AST and CK, can be used to predict mortality in children with EVD.

Risk Factors for Amputation in Opioid-Related Compartment Syndrome

Category: Trauma; Other Introduction/Purpose: Increase in opioid use has been associated with a higher incidence of compartment syndrome. To our knowledge, there is no long-term or large database study that analyzes this unique patient population. We sought to compare the clinical outcomes of opioid-related compartment syndrome (ORCS) and non-opioid related compartment syndrome (NORCS), and assess risk factors for amputation in ORCS. Methods: Data on 154 patients (132 NORCS and 22 ORCS patients) from January 1, 2016 to December 31, 2021 who presented with compartment syndrome was collected through a multicenter billing database. We analyzed demographic and clinical findings, including cause of compartment syndrome, time until initial evaluation, length of hospital stay, number of surgeries, rate of amputation, and peak creatinine kinase (CK) and lactate levels. Bivariate statistics were used to assess the data. Results: The most common cause of compartment syndrome was trauma (62%) in the lower leg (79%). Twenty-one ORCS patients (96%) had a delayed presentation after immobilization in dependent position for &gt;=8 hours. ORCS patients had significantly higher mean peak CK and lactate levels (p&lt;0.001), length of hospital stay (p&lt;0.001), and number of operations (p=0.03) compared to NORCS. All parameters, except for mean peak CK and lactate, were significantly greater among ORCS patients with subsequent amputation, compared to ORCS patients without amputation. ORCS patients with amputation had a significantly greater mean peak CK and lactate levels compared to ORCS without amputation (p=0.04). Conclusion: ORCS patients with subsequent amputation are associated with a longer and more complicated clinical course compared to ORCS and NORCS patients. As opioid use continues to rise, physicians should be aware of the unique challenges associated with ORCS patients.

Visualization of fibroblast activation after myocardial infarction using 68Ga-FAPI-PET

Abstract Introduction Fibroblast activation protein (FAP) alpha specifically expressed by activated fibroblasts has been shown to be significantly involved in processes of tissue healing after injury, including fibrotic remodeling after myocardial infarction (MI). Positron-emission tomography (PET) with the tracer FAP-inhibitor (FAPI) is a novel diagnostic tool primarily described in oncologic patients for tumor stroma detection. We present data from a pilot study investigating patients after MI who underwent subsequent 68Ga-FAPI-PET for assessment of potential FAP-related myocardial remodeling. Methods In this retrospective study we analyzed a cohort of 10 post-MI patients who underwent 68Ga-FAPI-PET imaging with respect to cardiac tracer pattern. Standardized maximum and mean uptake values and total volume of tracer enrichment (fibroblast activation volume, FAV) of the infarcted area were calculated. A visual grading scale was established to assess the level of agreement between maximum localized tracer uptake and segments belonging to the supply area of the culprit vessel. Tracer uptake was correlated to clinical variables, with readers blinded to the clinical characteristics. Results Focal 68Ga-FAPI uptake was detected in all 10/10 patients after MI. According to our grading system for visual agreement of polar map segments and culprit lesion, we observed a very good (in 37.5% of patients) and a moderate (62.5% of patients) match between tracer uptake and the culprit lesion, respectively. We demonstrated a negative correlation of FAV uptake and left ventricular systolic function (R2=−0.69, p&amp;lt;0.05) and a very strong positive correlation of FAV and peak creatinine kinase level (R2=0.90, p&amp;lt;0.01). Conclusion Increased myocardial 68Ga-FAPI uptake, serving as a surrogate for FAP expression after MI, corresponds well to the supply area of the culprit coronary vessel as well as to biomarker levels of myocardial injury. This imaging technique represents a highly promising, novel bio-signal in the assessment of myocardial injury and consecutive remodeling. Large controlled studies are warranted to further evaluate the prognostic impact of this novel imaging technique. Funding Acknowledgement Type of funding sources: None.

CCN family member 1 (CCN1) is an early marker of infarct size and left ventricular dysfunction in STEMI patients

Background and aimsCCN family member 1 (CCN1) has recently been proposed as a novel biomarker of myocardial injury, improving prediction of 30-day and one-year mortality following acute coronary syndromes. Among ST-elevation myocardial infarction (STEMI) patients, we evaluated the utility of CCN1 measured immediately before primary percutaneous coronary intervention (PPCI) as a predictor of two earlier endpoints: final myocardial infarct size and post-infarction left ventricular ejection fraction (LVEF). Furthermore, we evaluated the impact of CCN1 on the discriminatory power of the CADILLAC score. MethodsSTEMI patients were obtained from the SPUM-ACS cohort. Serum CCN1 was measured prior to PPCI. Linear regression assessed the association between CCN1, peak creatinine kinase (CK), and post-infarction LVEF. Cox models assessed an association between CCN1 and 30-day all-cause mortality. ResultsCCN1 was measured in 989 patients with a median value of 706.2 ng/l (IQR 434.3–1319.6). A significant correlation between CCN1, myocardial infarct size (peak CK) and LVEF was observed in univariate and multivariate analysis (both p < 0.001). Even among patients with normal classical cardiac biomarker levels at the time of PPCI, CCN1 correlated significantly with final infarct size. CCN1 significantly improved prediction of 30-day all-cause mortality by the CADILLAC score (C-index 0.864, likelihood-ratio chi-square test statistic 6.331, p = 0.012; IDI 0.026, p= 0.050). ConclusionsCompared with classical cardiac biomarkers, CCN1 is potentially the earliest predictor of final myocardial infarct size and post-infarction LVEF. CCN1 improved the discriminatory capacity of the CADILLAC score suggesting a potential role in the very-early risk stratification of STEMI patients.

Examination of gender differences in patients with takotsubo syndrome according to left ventricular biopsy: two\xa0case reports

BackgroundTakotsubo syndrome is a stress-induced disease that makes up 2–3% of acute coronary syndrome cases. However, its onset mechanism remains unclear. Although females are overwhelmingly affected, males end up having more cardiac complications.Case presentationWe examined the differences in stress responses in the myocardium between sexes in patients with takotsubo syndrome. We biopsied samples from an over 70-year-old Japanese male and an over 80-year-old Japanese female. Tissues from the left ventricle apex in the acute phase and the apical ballooning-type were examined using histopathology and deoxyribonucleic acid (DNA) microarray analysis. Our data showed that left ventricular ejection fractions were 38% and 56%, and peak creatinine kinase concentrations during hospitalization were 629 U/L and 361 U/L, for the male and female patient, respectively. The pulmonary capillary wedge pressure was 26 mmHg and 11 mmHg for the male and female patient, respectively. Negative T did not return to normal in the male subject after 6 months. Histopathology results indicated that contraction band necrosis and lymphocyte infiltration were more common in the male subject.ConclusionsWe noticed that possible differences may exist between male and female patients using pathological examination and some DNA analyses. In particular, it may help treat acute severity in males. We will elucidate the mechanism of takotsubo syndrome development by increasing the number of samples to support the reliability of the data in the future.

The relation between platelet/lymphocyte ratio and the occurrence of no reflow in patients with ST-segment elevation myocardial infarction managed by primary percutaneous coronary intervention

Introduction: No reflow phenomenon following primary percutaneous coronary intervention (PCI) is a strong predictor of mortality. Platelet/lymphocyte ratio (PLR) is an indicator of long-term outcome in ischemic heart disease patients. The aim of this study was to assess the relation between PLR measured on admission and the occurrence of no-reflow phenomenon in patients presenting with acute ST-segment elevation myocardial infarction (STEMI) managed by primary PCI. Methods: This was a prospective study including 100 patients with acute STEMI managed by primary PCI. Venous blood samples were obtained on admission to assess hemoglobin level, platelet count, and lymphocyte count. Thrombolysis in myocardial infarction (TIMI) flow grade, myocardial blush grade (MBG), and TIMI thrombus scale were assessed immediately following revascularization. During hospital stay, peak creatinine kinase MB fraction (CK-MB) was recorded, and transthoracic echocardiography was performed to assess left ventricular ejection fraction (LVEF). Results: Patients were divided into two groups based on the TIMI flow grade following PCI: Normal coronary flow group (TIMI 3 flow grade, n = 71) and reduced coronary flow (no-reflow) group (TIMI 0, 1, and 2, n = 29). There was a larger proportion of diabetic patients in the no-reflow group (P = 0.028). In addition, patients in the no-reflow group had a more advanced Killip class on presentation (P = 0.001), a lower LVEF (P

NT-proBNP Level Predicts Extent of Myonecrosis and Clinical Adverse Outcomes in Patients with ST-Elevation Myocardial Infarction: A Pilot Study.

The initial assessment of late gadolinium enhancement (LGE) on cardiac magnetic resonance imaging (CMR) reflects cardiac damage and is an important prognostic factor in patients with acute ST-elevation myocardial infarction (STEMI). N-Terminal prohormone of brain natriuretic peptide (NT-proBNP) is released following cardiomyocytes injury. However, the relationship between NT-proBNP levels, myocardial damage and clinical outcomes after STEMI has not been well defined. Plasma levels of NT-proBNP, troponin I and creatinine kinase (CK) were assessed in 75 patients with STEMI. Echocardiography and CMR were performed prior to hospital discharge. Cardiac damage was quantified using peak biomarker levels and LGE. Patients were followed for a median of 975 days (IQR 823-1098 days) for major adverse cardiac events (MACE) (all-cause mortality, recurrent myocardial infraction, unplanned recurrent revascularization and recurrent hospitalization for heart failure). Plasma levels of NT-proBNP increased following STEMI to peak at 24 hours. The dynamic changes in plasma NT-proBNP were similar to those noted with troponin I and its delayed peak but not those observed with plasma CK levels. Peak NT-proBNP levels correlated positively with indices of myocardial damage such as peak troponin I (R2 =0.38, P <0.001), peak CK (R2 =0.22, P = 0.01) and LGE examination (R2 = 0.46, P <0.001). Peak plasma level of NT- proBNP was strongly predictive of MACE during the follow-up period. Peak levels of NT-proBNP following STEMI are predictive of the extent of myocardial damage and clinical outcomes. These results suggest an important prognostic role for NT-proBNP assessment in STEMI patients.

Opioid-related compartment syndrome and associated morbidity

IntroductionOpioid-related compartment syndrome (ORCS) is an understudied complication related to opioid overdose. We hypothesized that ORCS would be associated with worse clinical outcomes, including higher amputation rates, need for multiple surgical procedures, and rhabdomyolysis on admission, compared with nonopioid-related compartment syndrome (NORCS). MethodsWe used Current Procedural Terminology codes for fasciotomy as a proxy marker for cases of compartment syndrome treated at 1 health system from January 1, 2016, to December 21, 2018. We excluded patients younger than 18 years, those treated for exertional compartment syndrome, and those who underwent elective fasciotomies. Seventy-four patients met our inclusion criteria. Data reviewed included patient characteristics, cause of compartment syndrome, time until evaluation for compartment syndrome, peak creatinine kinase levels, number of surgical procedures required, duration of hospital stay, and postoperative inpatient morbidity and death. Patients were categorized as having ORCS (n = 8) or NORCS (n = 66). Alpha = .05. ResultsAll cases of ORCS occurred in men. Opioid use was the third most common cause of compartment syndrome. Two patients underwent amputation, both in the ORCS group (p < 0.01). The median number of debridements was significantly higher for the ORCS group (median, 4; interquartile range [IQR]: 3–6) than for the NORCS group (median, 3; IQR 2–4) (p = 0.03). Duration of hospital stay was longer for the ORCS group (median, 27 days; IQR 16–38) compared with the NORCS group (median, 9 days; IQR: 5–13) (p < 0.001). Mean (± standard deviation) peak creatinine kinase level was significantly higher in the ORCS group (224,000 ± 225,052 U/L) compared with the NORCS group (7550 ± 32,500) (p < 0.001). The proportion of patients who underwent hemodialysis was higher in the ORCS group (88%) than in the NORCS group (35%) (p < 0.001). All ORCS patients presented >8 h after immobilization in a dependent position. ConclusionPatients in the ORCS group had delayed presentations and significantly more morbidity compared with patients in the NORCS group.

The predictive value of aVR in determining the infarct related artery during primary percutaneous coronary intervention

BackgroundIsolation of infract related artery and timely revascularisation remains vital in the setting of primary percutaneous coronary intervention. ObjectivesTo analyse the predictive value of ST-T changes in lead aVR in inferior myocardial infarction in terms of prognosis and timely risk stratification. MethodsWe conducted a prospective analysis of acute inferior wall myocardial infarction patients. One hundred patients were categorised into two groups according to the culprit artery: group I, right coronary artery (RCA) and group II, left circumflex coronary artery (LCX), with 50 patients in each group. A comparative study was performed between the two groups, comprising the following data outputs: electrocardiogram (ECG) changes that could help determine the culprit artery, cardiac enzyme levels, echocardiographic findings, coronary angiography findings and in-hospital complications. The same patients were divided into two groups according to the presence or absence of 1 mm ST depression in lead aVR. A comparison analysis was performed between the two groups including: cardiac enzyme levels, echocardiographic findings, coronary angiography findings and in-hospital complications. ResultsST depression in aVR ≥ 1 mm predicted the LCX as a culprit artery with sensitivity, specificity, positive predictive values (PPV) and negative predictive values (NPV) recorded at 66%, 84%, 80.5% and 71.2%, respectively. Also, patients with ST depression in aVR ≥ 1 mm showed significantly higher cardiac enzyme levels, indicating larger infarct size, with mean peak creatinine kinase (CK) = 1560 (1057–2375) IU/L versus 970 (613–1683) IU/L, (P value = 0.014), lower ejection fraction (Ef) with mean Ef = 47.93 ± 8.04 versus 54.66 ± 6.52, (P value < 0.001) and more significant mitral regurgitation: 17 (41.5%) patients versus 11 (18.6%) patients (P value = 0.012). Regarding in-hospital complications, there were no significant differences. ConclusionsST depression of >1 mm in lead aVR predicts LCX as the infarct related artery and is a predictor of poor outcome in patients with inferior myocardial infarction.

Renal Transplantation of Discolored Kidneys from Donors with Rhabdomyolysis and Acute Kidney Injury

Background Rhabdomyolysis is common in trauma patients with acute renal injury (AKI). The kidneys from donors with rhabdomyolysis and AKI may show discolored appearance. The transplant surgeons may be unwilling to accept a kidney with AKI and black appearance, especially when the kidney is anuric. Method Fourteen discolored (from brown to glossy black) kidneys from 7 deceased donors with severe rhabdomyolysis and AKI (defined as Kidney Disease Improving Global Outcomes (KDIGO) AKI Stage 1 - 3) were accepted for transplantation at our centers. Generally, we accept kidneys with a resistance < 0.4 mmHg/mL/min in pump perfusion when an preimplant biopsy excludes cortical necrosis and chronic lesions (>10% glomerulosclerosis, interstitial fibrosis, tubular atrophy). The kidney transplant results of 14 black kidneys from rhabdomyolysis donors were compared with those of 30 renal grafts from standard criteria donors (SCD). Results Two donors received continuous renal replacement therapy due to anuria. The peak serum creatinine kinase, myoglobin, and serum creatinine of the these donors was 27738 ± 7394 U/L, 76003 ± 50708 μg/L, and 442 ± 214 μmol/L, respectively. Pathological examination showed massive casts in the distal convoluted tubules. Immunohistochemically stained for myoglobin showed luminal myoglobin casts or prominent tubular epithelial cell reaction for myoglobin in the absence of luminal casts. Electron microscopy showed electron-dense casts consistent with myoglobin within tubular lumens. The estimated glomerular filtration rate (by the CKD-EPI Creatinine 2009 equation) at 1 years post-transplantation was similar between black kidneys from donors with rhabdomyolysis and SCD (69.8 ± 13.6 ml/min/1.73m2 vs. 71.2 ± 15.1 ml/min/1.73m2, P = 0.56). Conclusion If the rhabdomyolysis donor has a peak serum creatinine kinase level higher than 20 000 U/L and has tea- colored urine, the kidneys are likely to have a black appearance after in situ cold perfusion. Discolored kidneys from rhabdomyolysis donors with AKI can achieve excellent graft function, even when the kidneys are anuric. Routine screening for rhabdomyolysis should be performed in donors with AKI.

Rhabdomyolysis in a Tertiary PICU: A 10-Year Study.

Rhabdomyolysis is a disorder of muscle breakdown. The aim of this study was to describe the epidemiology of rhabdomyolysis in children admitted to a PICU and to assess the relationship between peak creatinine kinase and mortality. Retrospective cohort study in children admitted to the PICU with rhabdomyolysis between January 1, 2005, and December 31, 2014. Demographic, clinical, and outcome data were recorded. Outcomes were analyzed by level of peak creatinine kinase value (0-10,000, 10,001-50,000, > 50,000IU/L). Long-term renal outcomes were reported for PICU survivors. A single-centre academic tertiary PICU. Children admitted to the PICU with serum creatinine kinase level greater than 1,000 IU/L. None. There were 182 children with rhabdomyolysis. The median peak creatinine kinase value was 3,583 IU/L (1,554-9,608). The primary diagnostic categories included sepsis, trauma, and cardiac arrest. Mortality for peak creatinine kinase values 0-10,000, 10,001-50,000, and > 50,000 IU/L were 24/138 (17%), 6/28 (21%), and 3/16 (19%), respectively (p = 0.87). Children with a peak creatinine kinase greater than 10,000 IU/L had a longer duration of mechanical ventilation and ICU length of stay than children with peak creatinine kinase less than 10,000. Renal replacement therapy was administered in 29/182 (16%). There was longer duration of mechanical ventilation (273 [141-548] vs. 73 [17-206] hr [p < 0.001]) and ICU length of stay (334 [147-618] vs. 100 [37-232] hr (p < 0.001)] in children receiving renal replacement therapy. Continuous veno-venous hemofiltration was the most common modality 23/29 (79%). Only one child required renal replacement therapy postintensive care stay, and adverse long-term renal outcomes were uncommon. In children with rhabdomyolysis requiring intensive care, peak creatinine kinase was not associated with mortality but is associated with greater use of intensive care resources. Chronic kidney disease is an uncommon sequelae of rhabdomyolysis in children requiring intensive care.

Acute kidney injury in pediatric patients with rhabdomyolysis.

PurposeThis study aimed to evaluate the clinical findings in pediatric rhabdomyolysis and the predictive factors for acute kidney injury (AKI) in Korean children.MethodsMedical records of 39 Korean children, who were newly diagnosed with rhabdomyolysis from January 2008 to December 2015, were retrospectively analyzed. The diagnosis was made from the medical history, elevated serum creatinine kinase level >1,000 IU/L, and plasma myoglobin level >150 ng/mL. Patients with muscular dystrophy and myocardial infarction were excluded.ResultsThe median patient age at diagnosis was 14.0 years (range, 3–18 years), and the male to female ratio was 2.5. The most common presenting symptom was myalgia (n=25, 64.1%), and 14 patients (35.9%) had rhabdomyolysis-induced AKI. Eighteen patients (46.2%) had underlying diseases, such as epilepsy and psychotic disorders. Ten of these patients showed rhabdomyolysis-induced AKI. The common causes of rhabdomyolysis were infection (n=12, 30.7%), exercise (n=9, 23.1%), and trauma (n=8, 20.5%). There was no difference in the distribution of etiology between AKI and non-AKI groups. Five patients in the AKI group showed complete recovery of renal function after stopping renal replacement therapy. The median length of hospitalization was 7.0 days, and no mortality was reported. Compared with the non-AKI group, the AKI group showed higher levels of peak creatinine kinase and myoglobin, without statistical significance.ConclusionThe clinical characteristics of pediatric rhabdomyolysis differ from those observed in adult patients. Children with underlying diseases are more vulnerable to rhabdomyolysis-induced AKI. AKI more likely develops in the presence of a high degree of albuminuria.

Kidney transplantation from donors with rhabdomyolysis and acute renal failure.

Rhabdomyolysis in deceased donors usually causes acute renal failure (ARF), which may be considered a contraindication for kidney transplantation. From January 2012 to December 2016, 30 kidneys from 15 deceased donors with severe rhabdomyolysis and ARF were accepted for transplantation at our center. The peak serum creatinine (SCr) kinase, myoglobin, and SCr of the these donors were 15569±8597U/L, 37092±42100μg/L, and 422±167μmol/L, respectively. Two donors received continuous renal replacement therapy due to anuria. Six kidneys exhibited a discolored appearance (from brown to glossy black) due to myoglobin casts. The kidney transplant results from the donors with rhabdomyolysis donors were compared with those of 90 renal grafts from standard criteria donors (SCD). The estimated glomerular filtration rate at 2years was similar between kidney transplants from donors with rhabdomyolysis and SCD (70.3±14.6mL/min/1.73m2 vs 72.3±15.1mL/min/1.73m2 ). We conclude that excellent graft function can be achieved from kidneys donors with ARF caused by rhabdomyolysis.

Evolving Modifiable Risk Factor Patterns in STEMI Patients Without Known Cardiovascular Disease in a 21st Century Cohort

Background: Identification and management of the standard modifiable cardiovascular risk factors (SMuRFs) of hypercholesterolaemia, hypertension, diabetes and smoking has contributed to a substantial improvement in cardiovascular disease (CVD) mortality. However, CVD remains the leading cause of death globally. Methods: We performed a single centre retrospective study of patients presenting from January 2006 to December 2014 to a large tertiary hospital in Australia. All consecutive ST elevation myocardial infarction (STEMI) patients field-triaged directly to the cardiac catheterisation laboratory were assessed and included in analysis if they had confirmed diagnosis of STEMI and no previous history of CVD. Results: 536 patients were included in the analysis. The proportion of STEMI patients who were SMuRF-less increased in a linear manner from 11% in 2006 to 27% in 2014 (proportion increased by odds ratio 1.13 per year (95% confidence interval 1.04-1.22). The proportion of patients with hypercholesterolaemia decreased by an odds ratio 0.92 (95% confidence interval 0.86-0.98) and the proportion of current smokers decreased by an odds ratio 0.93 (95% confidence interval 0.86-0.99). The proportion of patients with diabetes and hypertension did not significantly change. In patients with 0 SMuRFs compared to patients with ≥ 1 SMuRF there was no significant difference in: the extent of coronary artery disease (single versus multi-vessel involvement); left ventricular ejection fraction (χ2 test, p = 0.25); peak creatinine kinase (χ2 test, p = 0.52); or in-hospital mortality. Conclusion: Our study suggests that the SMuRF profile of STEMI patients in the 21st century is evolving, with an increasing prevalence of SMuRF-less STEMI patients.

Peak creatinine kinase level is a key adjunct in the evaluation of critically ill trauma patients

BackgroundElevated creatinine kinase (CK) can indicate rhabdomyolysis, a risk factor for acute kidney injury (AKI). We investigated risk factors and clinical significance of peak CK levels. MethodsRetrospective analysis, adult trauma patients. Logistic regression was used to identify risk factors for elevated CK and AKI. Results3240 trauma patients were analyzed; median time to peak CK was 17 h and 347 patients had peak CK > 5000. On multivariable analysis, younger males with severe injury were more likely to have peak CK > 5000 and peak CK > 5000 was an independent risk factor for AKI (AOR 3.79).Although peak CK levels were significantly lower in older patients (1,637U/L vs 2,604U/L), older patients were more likely to develop AKI at lower CK levels. ConclusionsCK levels commonly peak within 1–2 days after admission. Despite lower peak CK levels, older patients are more likely to develop AKI. These data may support more rigorous CK monitoring and lower intervention threshold in older patients.

Onset-to-device time of patients who arrive at off-hours: Importance of prehospital management and public awareness for patients with ST-segment elevation myocardial infarction.

The influence of the time of arrival at the hospital on the door-to-device (DTD) time has been investigated; however, the influence on the onset-to-device (OTD) time is unclear in ST-segment elevation myocardial infarction (STEMI) patients. The aim of this study was to investigate the relationship between the time of arrival at the hospital and the OTD time in STEMI patients. We evaluated 377 STEMI patients who underwent primary percutaneous coronary intervention (pPCI) between January 2008 and December 2014. During the study period, 222 patients arrived at our hospital between 9 AM and 9 PM (on-hours group) and 155 patients arrived between 9 PM and 9 AM (off-hours group). The DTD time was longer in the off-hours group than in the on-hours group (50.4 vs 39.3minutes; P<.001), while the OTD time was longer in the on-hours group than in the off-hours group (285.7 vs 184.5minutes, P<.001). The 30-day mortality and peak creatinine kinase levels were similar between the groups. Transfer from a non-pPCI-capable facility to our hospital was more common in the on-hours group than in the off-hours group (49.1% vs 15.5%, P<.001). The OTD time was shorter in patients who directly visited our hospital than in those who were transferred (172.9 vs 338.5minutes, P<.001). The OTD time might be markedly longer in STEMI patients who arrive at the hospital during on-hours than in those who arrive at the hospital during off-hours because of the underuse of emergency medical services at STEMI onset.