Routine laboratory measures of heparin anticoagulation for children on extracorporeal membrane oxygenation: Systematic review and meta-analysis.

OBJECTIVE: Specific protocols for anticoagulation for children on ECMO vary across institutions, with most using a continuous infusion of unfractionated heparin. The goal of this study is to aid clinician's decision on the best measure of heparin anticoagulation test; which would be the one that correlates well with heparin activity and helps in predicting hemorrhagic and thrombotic complications. DATA SOURCES: A comprehensive search of MEDLINE, EMBASE, Cochrane Database of Systematic Reviews, and Scopus was conducted from each database's inception to 07/13/2018. STUDY SELECTION: Studies evaluating children (<18 years) treated with ECMO and evaluating ACT, aPTT, TEG and Anti-Xa in any language were included. DATA EXTRACTION: Two reviewers selected and appraised studies independently, and abstracted data. RESULTS: We included 19 studies (759 patients, mean age 19.8 months). Meta-analysis showed strong correlation between heparin dosing and anti-Xa. Additionally, there was not a strong correlation between laboratory tests and complications (hemorrhagic and thrombosis), or mortality. CONCLUSION: Based on current evidence, Anti-Xa is the only laboratory test that shows strong correlation with heparin infusion dose and seems like the most suitable test for monitoring of anticoagulation with heparin in children on ECMO.

Secretory diarrhea and hypokalemia associated with colonic pseudo-obstruction: A case study and systematic analysis of the literature.

BACKGROUND: Colonic pseudo-obstruction (CPO) is characterized by colonic distention in the absence of mechanical obstruction or toxic megacolon. Concomitant secretory diarrhea (SD) with hypokalemia (SD-CPO) due to gastrointestinal (GI) loss requires further characterization. AIM: To perform a systematic review of SD-CPO, report a case study, and compare SD-CPO with classical CPO (C-CPO). METHODS: We performed a search of MEDLINE, EMBASE, Cochrane, and Scopus for reports based on a priori criteria for CPO, SD and GI loss of potassium. An additional case at Mayo Clinic was included. RESULTS: Nine publications met inclusion criteria, with a total of 14 cases. Six studies had high, three moderate, and our case high methodological quality. Median age was 74 years (66-97), with 2:1 male/female ratio. Kidney disease was present in 6/14 patients. Diarrhea was described as profuse, watery, or viscous in 10 patients. Median serum, stool, and urine potassium concentrations (mmol/L) were 2.4 (range: 1.9-3.1), 137 (100-180), and 17 (8-40), respectively. Maximal diameter of colon and cecum (median) were 10.2 cm and 10.5 cm, respectively. Conservative therapy alone was effective in five out of 14 patients. Median potassium supplementation was 124 mEq/d (40-300). Colonic decompression was effective in three out of six patients; one had a total colectomy; three out of 14 had died. The main differences between SD-CPO and C-CPO were lower responses to treatments: conservative measures (35.7% vs 73.6%, P=.01), neostigmine (17% vs 89.2%, P<.001), and colonic decompression (50% vs 82.4%, P=.02). CONCLUSION: SD-CPO is a rare phenotype associated with increased fecal potassium and is more difficult to treat than C-CPO.

Bone turnover markers in Paget's disease of the bone: A Systematic review and meta-analysis.

UNLABELLED: The aim of this systematic review and meta-analysis is to study the utility of the commonly used bone turnover markers in evaluating disease activity in patients with Paget's disease of bone before and after treatment with bisphosphonates. We found good correlation between the bone turnover marker concentrations and disease activity assessed by bone scintigraphy. INTRODUCTION: Paget's disease of bone is a common skeletal disorder of the elderly. Bone turnover marker concentrations are used for diagnosis and follow-up. We aimed to compare the available bone turnover markers and determine their utility in assessing disease activity when compared to quantitative bone scintigraphy. METHODS: We conducted a systematic review and meta-analysis searching MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Scopus. We evaluated total alkaline phosphatase (total ALP), bone-specific alkaline phosphatase (bone ALP), procollagen type 1 amino-terminal propeptide (P1NP), serum, and urine C-terminal telopeptide (uCTx and sCTx, respectively), and urine N-terminal telopeptide (uNTx). The main outcome of interest was the correlation of disease activity with concentrations of bone turnover markers in Paget's disease patients before and after treatment with bisphosphonates. Correlation coefficients were pooled across studies using the random effects model. RESULTS: We included 17 observational studies and one trial reporting on 953 patients. Prior to treatment, all studied bone turnover markers had moderate to strong correlation with scintigraphic indices (correlation coefficients ranging from 0.58 to 0.80) with no statistically significant difference between the bone turnover markers overall (p = 0.08). P1NP, uNTx, and bone ALP tend to have higher correlation with scintigraphy. After starting treatment with bisphosphonate, there was moderate to strong correlation with disease activity with all markers except bone ALP (correlation coefficients ranging from 0.43 to 0.70). CONCLUSION: The findings of this meta-analysis suggest the Paget's disease activity is best monitored by following P1NP levels. However, total ALP, bone ALP, and uNTx are good alternatives as markers of disease activity in untreated patients. Total ALP and uNTx can be useful in following patients with Paget's disease after treatment if P1NP is not available. Clinicians, however, should take availability, cost, and the presence of liver disease into consideration when deciding which bone turnover marker is most appropriate when evaluating patients with Paget's disease.