Blood samples were collected via a radial artery cannula system with a closed circuit for blood sampling (Tru Wave with VAMP system, Edwards Lifesciences Co., Ltd., CA, USA). Each blood sample was dispensed for both ActF-MA measurements for TEG6s and fibrinogen concentration measurements for our hospital’s central laboratory to obtain results at the same time points. Each one milliliter blood sample was collected into a tube containing heparin for PM and into 3.2% sodium citrate for fibrinogen concentration measurement. Blood was collected at two time points: 30 minutes after starting CPB, and during the injection of warm cardioplegia solution just before coming off CPB. Usually, two measurements were performed; if hemostasis after removal from CPB was poor, a third blood sample was collected. The TEG6s instrument was used to measure ActF-MA in the operating room immediately after the blood was drawn by the anesthesiologist. Traditional laboratory-based testing was used to measure fibrinogen concentration; specimens were submitted to our hospital’s central laboratory and measured by the laboratory technician using Clauss fibrinogen assay.
Tru wave with vamp system
Manufactured by Edwards Lifesciences
Sourced in United States
The Tru Wave with VAMP system is a blood pressure monitoring device designed for use in clinical settings. It provides continuous measurement of arterial blood pressure. The system includes a disposable pressure transducer that connects to the patient's arterial line to capture real-time pressure data.
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Lab products found in correlation
2 protocols using tru wave with vamp system
1
Perioperative Blood Coagulation Assessment
2
Measuring Volatile Anesthetic Blood Levels
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Three blood samples were collected in each group via a radial artery cannula system with a closed circuit for blood sampling (Tru Wave with VAMP system, Edwards Lifesciences Co., Ltd., Irvine, CA). To measure desflurane and sevoflurane blood concentrations, blood samples (0.5 ml) were collected in a vial sealed with a rubber cap and aluminum crimp seal containing saline (Otsuka Pharmaceutical Co., Ltd., Tokyo, Japan). The HL sampling for both anesthetics was undertaken 20 min after starting the delivery of 6.0 vol% desflurane or 1.7 vol% sevoflurane with tracheal intubation and 3.0 l/min total gas flow. To measure the blood concentration of both VAs via oxygenator, blood samples were collected at 20 min after starting the delivery of 6.0 vol% desflurane or 1.7 vol% sevoflurane to the oxygenator with a constant gas mixture of oxygen and air (FIO2 50–60%) at 0.5–3.0 l/min. Based on the drug package insert information, it was predicted that the serum concentration of VAs would be sufficiently parallel at 20 min after their delivery to the patient was started. Blood samples were also obtained 40 min after starting the delivery of 1.7 vol% sevoflurane through the oxygenators to investigate changes with time. Several conditions, such as fresh gas flow rate and body temperature at the time of sampling, were transferred from the electronic medical chart.
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