Plethysmographic pulse oximeter waveform monitoring for immediate hemolytic transfusion reaction

The Pulse Oximeter Plethysmographic Waveform Reflects Changes That Occur during the Respiratory Cycle

Many pulse oximetry technologies display a processed and filtered representation of the photoplethysmosgraphic waveform. Each manufacturer uses unique proprietary algorithms to calculate the waveform displayed on the pulse oximeter. Masimo has extracted and processed information from the waveform to create two physiologic indices, perfusion index (PI) and pleth variability index (PVI). PI is ca...

The Pulse Oximeter Plethysmographic Waveform Reflects Changes That Occur during the Respiratory Cycle

Many pulse oximetry technologies display a processed and filtered representation of the photoplethysmosgraphic waveform. Each manufacturer uses unique proprietary algorithms to calculate the waveform displayed on the pulse oximeter. Masimo has extracted and processed information from the waveform to create two physiologic indices, perfusion index (PI) and pleth variability index (PVI). PI is ca...

Pulse oximeter plethysmographic waveform changes in awake, spontaneously breathing, hypovolemic volunteers.

BACKGROUND The primary objective of this study was to determine whether alterations in the pulse oximeter waveform characteristics would track progressive reductions in central blood volume. We also assessed whether changes in the pulse oximeter waveform provide an indication of blood loss in the hemorrhaging patient before changes in standard vital signs. METHODS Pulse oximeter data from fin...

Hemolytic transfusion reaction due to anti-IH.

BACKGROUND Anti-IH is usually a clinically insignificant antibody that may complicate a serologic workup. However, it can occasionally cause hemolysis. We report a rare case of acute hemolysis caused by anti-IH. CASE REPORT A 60-year-old man with a long history of chronic myelomonocytic leukemia and anemia, blood group A, D+ was found to have an unidentified antibody on serologic workup. He r...

Hemolytic transfusion reaction due to anti-A.