scholarly journals Diagnostic accuracy of procalcitonin, neutrophil-lymphocyte count ratio, C-reactive protein, and lactate in patients with suspected bacterial sepsis

PLoS ONE ◽  
2017 ◽  
Vol 12 (7) ◽  
pp. e0181704 ◽  
Author(s):  
Lars Ljungström ◽  
Anna-Karin Pernestig ◽  
Gunnar Jacobsson ◽  
Rune Andersson ◽  
Barbara Usener ◽  
...  
Author(s):  
Danny Luhulima ◽  
Marwito Marwito ◽  
Eva O

Sepsis akibat infeksi bakteri merupakan masalah kegawatdaruratan medik yang serius sehingga memerlukan penanganan cepat dantepat. Saat ini C-RP (C- reactive protein) dan PCT (procalcitonin) sering digunakan sebagai petanda sepsis bakterial. Sepsis adalah infeksiyang disertai inflamasi sistemik. Respons fisiologis terhadap inflamasi sistemik adalah peningkatan jumlah neutrofil dan penurunanjumlah limfosit, sehingga gabungan perbandingan neutrofil dan limfosit Neutrophil Lymphocyte Count Ratio (NLCR)) dapat digunakansebagai petanda sepsis. Penelitian ini bertujuan untuk mengetahui kepekaan dan kekhasana dari uji NLCR di pasien sepsis akibatinfeksi bakteri. Terdapat 70 pasien SIRS dengan rentang usia 14–70 tahun di RS Mitra Keluarga Bekasi Timur dan RS FK - UKI Jakartamasa waktu bulan Juli–September 2015. Penelitian ini merupakan studi observasional komparatif dan potong lintang. Hasil penelitianmenunjukkan uji NLCR terhadap sepsis bakterial berdasarkan kurva ROC memiliki kepekaan 97,8% dan kekhasan 84,0% pada cutoff ≥6,4 (AUC: 0,94, nilai p<0,05). Neutrophil lymphocyte count ratio dapat diandalkan sebagai petanda sepsis bakterial dengan ujikepekaan dan kekhasan yang baik.


2017 ◽  
Vol 15 (1) ◽  
pp. 22-27 ◽  
Author(s):  
Ting Yang ◽  
Chun Wan ◽  
Hao Wang ◽  
Jiangyue Qin ◽  
Lei Chen ◽  
...  

Community-acquired pneumonia is a common disease associated with high mortality. This retrospective study examined whether the neutrophil–lymphocyte count ratio (NLR), already widely used as an index of inflammation, can be used to predict in-hospital mortality of adults with community-acquired pneumonia. Clinical characteristics, CURB-65 and pneumonia severity index score of pneumonia severity, NLR, serum levels of C-reactive protein and procalcitonin, and in-hospital mortality were analyzed for 318 consecutive adults with community-acquired pneumonia admitted to West China Hospital between July 2012 and December 2013. The ability of NLR and other parameters to predict in-hospital mortality was assessed using receiver operating characteristic (ROC) curves. Results showed that NLR increased with increasing CURB-65 ( P < 0.05) and pneumonia severity index ( P < 0.05), and NLR correlated positively with serum levels of C-reactive protein (r = 0.239, P < 0.05) and procalcitonin (r = 0.211, P < 0.05). The median value of NLR was significantly higher among patients who died in hospital (11.96) than among those who were alive at the end of hospitalization (4.19, P < 0.05). Based on a cut-off NLR of 7.12, this index predicted in-hospital mortality with a sensitivity of 82.61% and specificity of 72.20% (area under ROC curve, 0.799). Predictive power was greater for the combination of NLR and serum levels of C-reactive protein and procalcitonin. These results suggest that NLR may be useful for predicting prognosis in Chinese adults with community-acquired pneumonia, and it may work better in combination with traditional markers.


Author(s):  
Rahul Khajuria ◽  
Vinu Jamwal ◽  
Anil K. Gupta ◽  
Abhinav Gupta

Background: One major problem encountered in the intensive care unit is differentiating the inflammatory response from an infective process. Clinical and standard laboratory tests are not very helpful because most critically ill patients develop some degree of inflammatory response, whether or not they have sepsis. Numerous biomarkers have been evaluated to predict mortality in critically ill patients, although none have proved entirely useful. Objective of the study was to evaluate eosinophil count and neutrophil-lymphocyte count ratio with C-reactive protein levels in patients with sepsis.Methods: 71 patients >18 years of age of either sex with a diagnosis of sepsis were enrolled in this one-year observational study. Patients were classified according to the criteria of the American College of Chest Physicians/Society of Critical Care Medicine into sepsis group (n=50) and no sepsis group (n=21). Sepsis group were further divided into subgroups: sepsis (n=19), severe sepsis (n=16) and septic shock (n=15). Absolute eosinophil cell, neutrophil and lymphocyte counts for first 4 consecutive days and then on alternate days up to one week were also noted down. C-reactive protein levels on day 3 were also noted down.Results: In the sepsis group, mean eosinophil count was significantly (p<0.0001) low, mean neutrophil/lymphocyte count ratio was significantly (p<0.0001) high, mean CRP count was significantly (p=0.019) more as compared to that of no sepsis group. Among 16 mortalities, significant (p<0.05) decrease was noted in mean eosinophil count from day 3 onwards in patients of sepsis and septic shock subgroups. Mean N/L ratio showed no significant difference in patients of sepsis, severe sepsis or septic shock. Mean CRP count showed significant (p<0.05) increase in severe sepsis patients and mean Apache II score showed significant (p<0.05) deterioration in patients of septic shock.Conclusions: Neutrophil/lymphocyte count ratio (NLCR) and absolute eosinophil count (AEC) came out as better independent biomarker of sepsis in critically ill patients with infection admitted in intensive care unit. Diagnostic performance was better in these two diagnostic markers as compared to CRP marker. NLCR presented with sensitivity of 89.58%, AEC with 82.35% and CRP with 80.77%. Outcomes of NLCR and AEC were quick, easy and economical in establishing diagnosis of sepsis.


2020 ◽  
Author(s):  
Nan Zheng ◽  
Dongmei Zhu New ◽  
YI HAN

Abstract Background: The relationship between biomarkers and hospital acquired pneumonia (HAP) is under studied, especially those severe cases admitted to the intensive care unit (ICU). Compared with community acquired pneumonia (CAP), HAP might have different traits regarding biomarkers due to the previous history in the hospitals. Methods: 593 adult patients were enrolled into this retrospective cohort study to determine neutrophil-lymphocyte count ratio (NLCR), procalcitonin (PCT), C-reactive protein (CRP) and serum lactate level at the admission of ICU. According to the diagnosis, patients were divided into two groups: non-infection and HAP. Discriminant analysis was performed based on better outcomes of diagnostic performance and severity evaluation. The diagnostic performance of each individual biomarker was assessed by construction of receiver operating characteristic (ROC) curves and calculation of the area under each ROC curves (AUROC). Multivariable analysis was also applied to determine most appropriate prognostic factors. Results: NLCR, PCT and CRP between non-infection and HAP group showed remarkable differences. Because of discriminant ability of severe infection, the AUROC of NLCR (0.626; 95%CI 0.581-0.671) was not comparative with conventional markers such as CRP (0.685; 95% CI 0.641-0.730) and PCT (0.661; 95% CI 0.615-0.707). Besides, AUROC of composite biomarkers, especially the combination of NLCR, CRP and WBC, were significantly greater than the single biomarkers. Conclusions: NLCR was not comparable to conventional single biomarkers such as CRP and PCT regarding to diagnosis or severity evaluation of HAP. Composite biomarkers could prompt early diagnosis and severity evaluation with improved accessibility, especially the combination of NLCR, CRP and WBC.


2020 ◽  
Vol 6 (1) ◽  
pp. 25-31
Author(s):  
Alina Orfanu ◽  
Victoria Aramă ◽  
Cristina Popescu ◽  
Cătălin Tilişcan ◽  
Adrian Streinu-Cercel ◽  
...  

AbstractAimsTo evaluate the kinetics of inflammatory biomarkers in septic patients in order to identify the most reliable predictor of unfavorable outcome.MethodsA prospective analysis of septic patients was performed. Median levels of neutrophil/lymphocyte count ratio, fibrinogen, C-reactive protein and procalcitonin were dynamically assessed and comparatively analyzed.ResultsSeventy-seven patients were included. Descendent kinetic patterns were registered for all biomarkers, except C-reactive protein. At 24 hours, neutrophil/lymphocyte count ratio significantly decreased in 42.85% of cases, procalcitonin in 37.33%, C-reactive protein in 16.12% and fibrinogen in 1.58% of cases. At 72 hours, procalcitonin decreased to one-half in 70% of cases and neutrophil/lymphocyte count ratio in 67.53% of cases.ConclusionsNeutrophil/lymphocyte count ratio and procalcitonin significantly decreased in the first 72 hours, while C-reactive protein increased in the first 24 hours. The proportions of patients with major decrease of baseline values were higher for neutrophil/lymphocyte count ratio and procalcitonin.


2020 ◽  
Author(s):  
Minping Zhang ◽  
Enhua Xiao ◽  
Jiayi Liu ◽  
Yeyu Cai ◽  
Qizhi Yu

Abstract Background: To analyze clinical features and laboratory indicators and identify the markers of exacerbation in COVID-19. Methods: We reviewed clinical histories of 177 patients with confirmed COVID-19. The patients were categorized into mild group (153 patients) and severe group (24 patients). The baseline demographic and laboratory indicators of all patients were collected, including the neutrophil-lymphocyte count ratio (NLCR) and C-reactive protein to albumin ratio (CAR). Receiver operating characteristic curve (ROC) analysis was performed to search for indicators predicting exacerbation in COVID-19 patients, and acquiring the area under the curves (AUCs), sensitivity, specificity and cut-off value. Results: The age of the severe group were significantly older than those of the mild group (P <0.01). Fever was the typical symptom in all COVID-19 patients. Cough and fatigue were manifested in mild group, yet severe patients were more prominent in dyspnea. The laboratory indicators showing that the mild group mainly had an elevated C-reactive protein; the severe group had a decreased lymphocyte count and lymphocyte ratio. WBC, neutrophil count, neutrophil ratio, D-dimer, AST, ALT, LDH, BUN, CRP levels increased. Furthermore, compared to mild group, WBC, neutrophil count, neutrophil ratio (Neut%), D-dimer, total bilirubin, albumin, AST, ALT, LDH, BUN, creatine kinase, CRP, CAR, NLCR were significantly higher, the lymphocyte count, lymphocyte ratio, and APTT were significantly lower in severe group (P<0.05). The ROC indicating that NLCR, Neut%, CAR, CRP, and LDH were better at distinguishing mild and severe patients. The AUCs of NLCR was larger than others (NLCR>Neut%>CAR>CRP>LDH: 0.939>0.925>0.908>0.895>0.873), which suggested that NLCR was the optimal maker; a cut-off value for NLCR of 6.15 had 87.5% sensitivity and 97.6% specificity for predicting exacerbation in COVID-19 patients. Conclusions: The different types of COVID-19 had significant differences in age, clinical symptoms and laboratory indicators, and severe patients might be easier to suffer from the multiple organ damage. An elevated NLCR may indicate that the disease was progressing towards exacerbation. It was essential to dynamically monitor the serum NLCR levels which contributed to evaluate the patient's condition and efficacy. NLCR could be used as a novel, highly specific and sensitive marker for predicting severity of COVID-19 patients.


2021 ◽  
Vol 6 (2) ◽  
pp. 135-144
Author(s):  
Irfan Dzakir Nugroho ◽  
◽  
Dwi Hidayah ◽  
Harsono Salimo ◽  
◽  
...  

Sari Pediatri ◽  
2021 ◽  
Vol 23 (1) ◽  
pp. 1
Author(s):  
Adri Zamany Anwary ◽  
Dzulfikar Djalil Lukmanul Hakim ◽  
Djatnika Setiabudi

Latar belakang. Sepsis merupakan penyebab utama morbiditas dan mortalitas utama pada anak di seluruh dunia. C-reactive protein (CRP) merupakan penanda infeksi yang paling banyak digunakan, tetapi parameter tersebut terkendala tingkat sensitivitas, spesifisitas, ketersediaan alat, dan biaya. Neutrophil-lymphocyte Count Ratio (NLCR) merupakan pemeriksaan yang mudah dan murah, serta banyak digunakan sebagai penanda diagnostik pada berbagai proses inflamasi.Tujuan. Menganalisis korelasi antara NLCR dan CRP pada pasien sepsis anak.Metode. Studi analitik observasional menggunakan data sekunder dari register sepsis anak di RSUP Dr. Hasan Sadikin Bandung periode Januari 2019–Desember 2019. Pengambilan data berupa karakteristik pasien, nilai NLCR, dan CRP, didapatkan data tidak berdistribusi normal( uji Kolmogorov-Smirnov) maka analisis korelasi dilakukan menggunakan uji Rank Spearman dengan nilai kemaknaan p<0,05.Hasil. Sebanyak 80 subjek memenuhi kriteria inklusi. Median nilai NLCR subjek 2,98 (rentang 0,12-19,38) dan nilai median CRP subjek 2,44 (rentang 0,01-34,04) Nilai NLCR memiliki korelasi bermakna dengan CRP (r=0,310; p=0,005). Kesimpulan. Terdapat korelasi positif yang bermakna antara neutrophil-lymphocyte count ratio dengan CRP pada pasien sepsis anak.


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