Arterial Catheter Sampling
Arterial Catheter Sampling - Related Videos
02:50
Seldinger Technique Based Pulmonary Artery Catheterization: A Procedure to Insert Pulmonary Artery Catheter Through the Jugular Vein in a Porcine Model
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2025
In this video, we have demonstrated a step-by-step procedure of pulmonary artery catheterization by inserting an intravascular catheter through jugular vein and reach the pulmonary artery to measure the cardiac chamber pressure in porcine model.
10:45
Central Venous Catheter Insertion: Femoral Vein
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2023
Source: James W Bonz, MD, Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA Central venous access is necessary in a multitude of clinical situations, including vascular access, vasopressor and caustic medication delivery, central venous pressure monitoring, volume resuscitation, total parental nutrition, hemodialysis, and frequent phlebotomy. There are three veins in the body that are accessed for central venous cannulation: the internal jugular, the subclavian, and the...
11:39
Central Venous Catheter Insertion: Internal Jugular
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2023
Source: James W Bonz, MD, Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA Central venous access is necessary in a multitude of clinical situations, including vascular access, vasopressor and caustic medication delivery, central venous pressure monitoring, intravascular device delivery (pacing wires, Swann-Ganz catheters), volume resuscitation, total parental nutrition, hemodialysis, and frequent phlebotomy. Safe reliable placement of a central venous catheter (CVC) in...
09:38
Femoral Arterial and Venous Catheterization for Blood Sampling, Drug Administration and Conscious Blood Pressure and Heart Rate Measurements
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Cited by 53 •
2012
Chronic catheterization of blood vessels in the rat is often required for administration of substances, obtain blood sample over a period of time or for direct conscious blood pressure measurements. Femoral arterial catheterization of the rat and corresponding measurements of blood pressure in the conscious animal will be demonstrated.
06:57
Arterial Line Placement
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2023
Source: Sharon Bord, MD, Department of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA When monitoring patients, it is important to obtain values that are accurate and reliable. Blood pressure monitoring is one of the essential vital signs, and for a majority of patients, measuring it utilizing non-invasive techniques provides accurate values. However, there are situations in which the blood pressure requires more exact, specific, and reliable measurements.
FAQs
The discard removes blood occupying the catheter’s dead space before the actual specimen is collected. Without this step, the sample may not represent freshly circulating arterial blood and could compromise assessment of oxygenation, ventilation, acid–base status, or other laboratory variables. Using an appropriate discard volume therefore improves the relevance of results used for clinical decisions.
Heparin helps prevent clot formation in the collected specimen, preserving it for blood-gas and related laboratory analysis. Maintaining anaerobic conditions limits exposure to air, which is important when evaluating oxygenation, ventilation, and acid–base status. These handling requirements protect sample integrity so measured values more accurately reflect the patient’s circulating blood.
Results may provide information about oxygenation, ventilation, acid–base status, electrolytes, and other laboratory variables. Together, these measurements help clinicians evaluate how changing physiology affects a critically ill patient rather than relying on a single isolated observation. The findings can support decisions about respiratory support, fluid management, and the need to reassess treatment.
An indwelling arterial catheter provides ongoing access for serial blood collection, whereas repeated arterial puncture requires a new needle procedure for each sample. This distinction is particularly useful when clinicians need frequent reassessment during changing illness or treatment. Catheter access can reduce repeated arterial punctures while supporting continued monitoring in intensive care and anesthesia.
Clinicians first withdraw an appropriate discard volume to clear the catheter dead space, then collect the specimen, often in a heparinized syringe. For blood-gas analysis, they preserve anaerobic conditions during handling. These steps help ensure that the specimen reflects circulating arterial blood and that the reported measurements remain suitable for evaluating the patient’s physiology.
Its value is greatest when clinicians must follow rapidly changing physiology, such as in intensive care or during anesthesia. Serial results can guide adjustments to respiratory support, inform fluid management, and show whether treatment is producing the expected physiological change. The catheter also avoids requiring a new arterial puncture whenever another assessment becomes necessary.