What is a fiberoptic catheter?

What is a fiberoptic catheter?

Fiberoptic systems operate by projecting light through an optic fiber to a miniature, displaceable mirror in the catheter tip. 43. The amount of light reflected to a collecting optic fiber depends on the mechanical displacement of the mirror, which is a function of ICP.

What does ScvO2 mean?

Central venous oxygen saturation (ScvO2) is a useful surrogate for SvO2 and is measured in the superior vena cava through an ordinary central venous catheter. ScvO2 only measures venous blood returning from the upper half of the body, while SvO2 samples the true mixed venous blood leaving the right heart.

What is a triple lumen catheter?

A double lumen catheter has 2 lumens while a triple lumen catheter has 3. Multi-lumen catheters allow us to run several different infusion with only one access site (Image 2).

What is venous oximetry?

Venous oximetry is the key that provides invaluable insight into the adequacy of the cardiopulmonary system. It yields an estimation of the oxygen supply-demand ratio in the human body during critical illnesses. It assists in the early recognition and management of tissue hypoxia.

What is the normal value of ICP?

For the purpose of this article, normal adult ICP is defined as 5 to 15 mm Hg (7.5–20 cm H2O). ICP values of 20 to 30 mm Hg represent mild intracranial hypertension; however, when a temporal mass lesion is present, herniation can occur with ICP values less than 20 mm Hg [5].

What is an intraventricular catheter?

INTRAVENTRICULAR CATHETER. The intraventricular catheter is the most accurate monitoring method. To insert an intraventricular catheter, a hole is drilled through the skull. The catheter is inserted through the brain into the lateral ventricle. This area of the brain contains cerebrospinal fluid (CSF).

What is SaO2?

SaO2 is the percentage of available binding sites on hemoglobin that are bound with oxygen in arterial blood. The O2 dissociation curve (and hence the SaO2 for a given PaO2) is affected by PaCO2, body temperature, pH and other factors.

How do I read ScvO2?

1. Normal oxygen extraction is 25–30% corresponding to a ScvO2 >65%
2. < 65% = Impaired tissue oxygenation.
3. >80% = High PaO2; or suspect: — Cytotoxic dysoxia (e.g. cyanide poisoning, mitochrondial disease, severe sepsis) — Microcirculatory shunting (e.g. severe sepsis, liver failure, hyperthyroidism) — Left to right shunts.

Which lumen is used for CVP?

If using a pulmonary artery (PA) catheter, use the proximal lumen for continuous CVP monitoring. If using a central venous catheter (CVC) with multiple lumens, use the distal port for continuous CVP monitoring.

What color is distal port on central line?

The proximal is the brown cap and is used for blood draws, the distal (white cap) is the port used for infusions like TPN and the medial port is used for routine fluids and IV meds on a pump.

What is a normal venous pO2?

TABLE I: Arterial and venous blood gas reference range

What is normal CVP range?

A normal central venous pressure reading is between 8 to 12 mmHg. This value is altered by volume status and/or venous compliance.