Performance Evaluation of the Atellica Hema 580 Automated Slidemaker and Stainer for Morphology Review.

BACKGROUND: Improved measurement technologies for automated peripheral blood smear (PBS) preparation have led to a more efficient workflow. In this report, we evaluated the Atellica Hema 580 automated slidemaker/stainer (Siemens Healthineers, Tarrytown, NY, USA). METHODS: The quality of PBS prepared and stained on the Atellica Hema 580 slidemaker/stainer were compared with manual films stained on the Hematek 3000. A 200-cell differential and morphology assessment were performed by two competent morphologists. RESULTS: Macroscopically, the automated PBS were of excellent quality, with a gradual transition in thickness, smooth edges, and sufficient length. The morphology was comparable between manual and automated PBS. Correlations between the manual and automated PBS were 0.95 (95% confidence interval: 0.92 to 0.96) for neutrophils, 0.63 (95% CI: 0.50 to 0.74) for monocytes and 0.90 (95% CI: 0.85 to 0.93) for lymphocytes. CONCLUSIONS: The performance of Atellica Hema 580 automated slidemaker/stainer was comparable to the manual method and represents a reliable automated solution for medium to large sized laboratories.

Verification of a Benchtop Hematology Analyzer with a 5-Part Differential Count: There is Nothing Wrong with Being Small.

BACKGROUND: The benchtop ADVIA 560 AL hematology analyzer (Siemens Healthineers Tarrytown, NY, USA) offers a small footprint and ease of operation making it suitable for satellite laboratories and intensive care units. A verification study of this analyzer was performed. METHODS: Between- and intra-run precision, carry-over, linearity, and throughput were evaluated on the ADVIA 560 AL. Accuracy was assessed on 94 patient samples by comparing the results obtained on the ADVIA 560 AL to the results on the reference Sysmex XN1000 analyzer (Sysmex Corporation, Kobe, Japan). RESULTS: The ADVIA 560 AL showed acceptable imprecision on control material and minimal bias in comparison to the XN 1000 on patient samples with a throughput of 60 samples per hour. The percentage carryover was not significant and the linearity was within acceptable limits. CONCLUSIONS: The ADVIA 560 AL bench-top analyzer is suitable for acute care centers and satellite laboratories owing to its small footprint, ease of use, and reproducible and accurate results.

A case of a drug reaction to sulfasalazine in a patient infected with HIV.

INTRODUCTION: The diagnosis of drug reaction with eosinophilia and systemic symptoms (DRESS) in human immunodeficiency virus (HIV) patients on multiple drugs with concomitant disorders presents a diagnostic challenge. PATIENT PRESENTATION: We describe a case of a drug reaction to sulfasalazine in a 46 year old HIV-infected female with concurrent rheumatoid arthritis which presented atypically with a marked peripheral blood plasmacytosis mimicking a lymphoproliferative neoplasm. MANAGEMENT AND OUTCOME: A diagnosis of DRESS was made in conjunction with the laboratory and clinical presenting findings. Sulfasalazine was immediately discontinued. The mucocutaneous rash and systemic symptoms (which included fever, lymphadenopathy and multi-organ dysfunction) resolved with supportive treatment. This included topical and systemic corticosteroids. CONCLUSION: In conclusion, it is important to consider drug reactions when evaluating patients infected with HIV.