Introduction. At the crossroads of heart failure (HF) and systemic inflammation, platelets and lymphocytes are both influenced as well as actively participating in the bidirectional relationship. The platelet to lymphocyte ratio (PLR) could therefore be a marker of severity. This review aimed to assess the role of PLR in HF. Methods. We searched the PubMed (MEDLINE) database using the keywords “platelet”, “thrombocyte”, “lymphocyte”, “heart failure”, “cardiomyopathy”, “implantable cardioverter defibrillator”, “cardiac resynchronization therapy” and “heart transplant”. Results. We identified 320 records. 21 studies were included in this review, with a total of 17,060 patients. PLR was associated with age, HF severity, and comorbidity burden. Most studies reported the predictive power for all-cause mortality. Higher PLR was associated with in-hospital and short-term mortality in univariable analysis, however, it was not consistently an independent predictor for this outcome. PLR > 272.9 associated an adjusted HR of 3.22 (95%CI 1.56 – 5.68, p<0.001) for 30-day fatality. During long-term follow-up from 6 months to 5 years, PLR was an independent predictor of mortality in most studies, with cut-off values ranging from > 150 to > 194.97 and adjusted HR from 1.47 (95%CI 1.06 – 2.03, p=0.019) to 5.65 (95%CI 2.47–12.96, p<0.001). PLR > 173.09 had an adjusted OR 2.89 (95%CI 1.17–7.09, p=0.021) for predicting response to cardiac resynchronization therapy. PLR was not associated with outcomes after cardiac transplant or implantable cardioverter-defibrillator. Conclusion: Increased PLR could be an auxiliary biomarker of severity and survival prognosis in HF patients.
Introduction Heart failure (HF) affects platelet activation, function, as well as the production of platelets from megakaryocytes. Low platelet counts have been described in HF patients, however without clear distinction whether this is a consequence of HF severity or an independent comorbidity contributing to worse outcomes. Aim Our purpose was to assess the prognostic role of thrombocytopenia in HF patients. Methods Patients with HF admitted to our Cardiology Department were included in this study, after excluding acute coronary syndromes, pulmonary embolisms, infections, malignancy and hepatic cirrhosis. Thrombocytopenia was defined as a platelet number below 15ehz747.0353/uL and classified as severe below 5ehz747.0353/uL and moderate between 5ehz747.0353–1ehz747.03530/uL. Patients with a left ventricular ejection fraction (LVEF) <40% were classified as HF with reduced EF (HFrEF), those with a LVEF between 40 and 49% as HF with mid-range EF (HFmrEF) and the rest as HF with preserved EF (HFpEF). All-cause mortality was assessed after a mean follow-up of 5.5 years. Results We included 1142 patients, with a mean age of 72.45±10.53 and 51.6% female. 121 (10.6%) patients had thrombocytopenia, of which 3 had severe thrombocytopenia and 21 had moderate thrombocytopenia. All-cause long-term mortality was 43.8%. Patients with acute decompensated heart failure had similar prevalence of thrombocytopenia as those with stable heart failure (12.3% vs 9.5%, p=0.22). Patients with thrombocytopenia had a higher risk ratio for all-cause mortality compared to patients with normal platelet counts (RR 1.35, 95% CI 1.14–1.60, p=0.002). Patients with severe thrombocytopenia had a risk ratio of 2.29 (95% CI 2.14–2.45, p=0.049), those with moderate thrombocytopenia had a risk ratio of 1.80 (95% CI 1.39–2.33, p=0.006) and those with mild thrombocytopenia had a risk ratio of 1.23 (95% CI 1.01–1.51, p=0.06) of all-cause long-term mortality, compared to patients with normal platelet counts. Patients with thrombocytopenia and HFpEF (RR 1.66, 95% CI 1.16–2.37, p=0.021) or HFrEF (RR 1.35, 95% CI 1.09–1.68, p=0.03) had higher risk of all-cause long-term mortality, but not those with HFmrEF and thrombocytopenia (RR 1.09, 95% CI 0.67–1.76, p=0.73), possibly due to the predominance of mild thrombocytopenia (80.9%). In multiple regression analysis, after adjusting for age and sex, alongside NT-proBNP levels and left ventricular ejection fraction, moderate thrombocytopenia (p=0.031) was an independent predictor of all-cause long-term mortality, but not mild thrombocytopenia (p=0.415). Due to the very low number of patients, no multiple regression analysis could be computed with severe thrombocytopenia. Conclusions Thrombocytopenia is an independent predictor of mortality in HF patients, especially platelet counts below 1ehz747.03530/uL. In both patients with HFrEF and HFpEF this biomarker should be assessed for prognosis.
Background and aims. In cancer patients sarcopenia may be a predictor for postoperative complications of curative or palliative surgery. Several indices including the total psoas area index (TPAI) are proposed for the diagnosis of this condition, but there is no validated cut-off point. Our study aimed to assess the role of TPAI as a marker for sarcopenia and to compare the utility of previously proposed cut-off values for predicting post-operative complications in patients with digestive cancers undergoing surgery. Methods. We retrospectively included all adult patients with digestive cancers admitted to a tertiary center for elective surgery between January and December 2019. Sarcopenia was considered based on TPAI evaluated on abdominal computed tomography (CT) and for analysis we used different cut-off points published by various authors. The primary endpoint was the occurrence of any complications as defined by the Clavien-Dindo classification. The secondary endpoints were fistula development, low– versus high-grade Clavien-Dindo post-operative complications, moderate or severe anemia at discharge, major bleeding, hypoalbuminemia at discharge, and decrease in albumin levels by at least 1g/dL. Results. We included 155 patients with a mean age of 64.78 ± 11.40 years, of which 59.35% were males; 58.06% developed postoperative complications. TPAI evaluated as a continuous variable was not a predictor for the development of post-operative complications neither in the general study sample, nor in the gender subgroups of patients. Sarcopenia defined by previously proposed cut-off values was not a predictor of the secondary end-points either. Conclusion. TPAI as a sole parameter for defining sarcopenia was not a predictor for postoperative complications in patients undergoing surgery for digestive neoplasia.
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