12 Monitoring Invasive Pressure

Measuring Pulmonary Artery Wedge Pressure

•The clinical value of the derived PPV information must be determined by a physician. According to recent scientific literature, the clinical relevance of PPV information is restricted to sedated patients receiving controlled mechanical ventilation and mainly free from cardiac arrhythmia.

To select an arterial pressure as PPV source:

1In the Main Setup menu, select Measurements.

2In the Setup PPV menu, select ABP, ART, Ao, BAP, P or FAP as the arterial pressure source.

CAUTION Older measurement servers cannot supply a beat-to-beat arterial pressure value. In this case the monitor shows a NO PPV FROM <Server> INOP.

At respiration rates below 8 rpm, PPV calculation may lead to inaccurate values.

Measuring Pulmonary Artery Wedge Pressure

Pulmonary Artery Wedge Pressure (PAWP) values, used to assess cardiac function, are affected by:

•Fluid status

•Myocardial contractility

•Valve and pulmonary circulation integrity

Obtain the measurement by introducing a balloon-tipped pulmonary artery flotation catheter into the pulmonary artery. When the catheter is in one of the smaller pulmonary arteries, the inflated balloon occludes the artery allowing the monitor to record changes in the intrathoraic pressures that occur throughout the respiration cycle. The pulmonary wedge pressure is the left ventricular end diastolic pressure (preload).

The most accurate PAWP values are obtained at the end of the respiration cycle when the intrathoraic pressure is fairly constant. Use the ECG waveform to determine the waveform of the wedge pressure. You can use the respiration waveform as a reference when assessing the PAWP waveform, to ensure constant measurement timing relative to the respiratory cycle. The monitor displays the PAWP value for up to 48 hours or until you admit a new patient.

WARNING The pressure receptor in the catheter records pressure changes that occur only in front of the occlusion. Even though the catheter tip is in the pulmonary artery, the receptor records pressure changes transmitted back through the pulmonary circulation from the left side of the heart.

While performing the wedge procedure, the monitor switches off the pressure alarms for pulmonary artery pressure (PAP).

Due to a slight measurement delay, you should not use Microstream (sidestream) CO2 as a direct reference for determining the end expiratory point in the pressure curve.

To start the Wedge procedure,

1In the Main Setup menu, select Wedge to display the wedge procedures window.

2Prepare and check the pressure line according to your hospital policy. If the PAP waveform scale is set to Optimum prior to the wedge procedure, it is possible that after wedging the catheter, the resulting pressure waveform will fall below the lower scale. In this case, the wedge waveform will

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Philips MP20/30, MP60/70/80/90, MP40/50 manual Measuring Pulmonary Artery Wedge Pressure
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MP60/70/80/90, MP40/50, MP20/30 specifications

Philips MP20/30, MP40/50, and MP60/70/80/90 are advanced patient monitoring systems designed to enhance clinical workflows and patient care in diverse healthcare settings. These devices combine cutting-edge technologies and user-friendly interfaces, making them essential tools for hospitals and healthcare providers.

The MP20 and MP30 are notable for their compact design, making them ideal for environments where space is limited. They come equipped with a variety of monitoring parameters, including ECG, SpO2, and non-invasive blood pressure, providing a comprehensive overview of patient health. These models are particularly suited for use in general wards or recovery areas, offering reliability and ease of use.

Moving to the MP40 and MP50, these monitors incorporate more advanced functionalities, including multi-gas monitoring, which is vital for anesthetic applications. They feature a robust data storage capacity, allowing for extensive patient history tracking and improved decision-making capabilities. The intuitive touchscreen interfaces facilitate quick access to essential information, enabling healthcare professionals to respond efficiently to changes in a patient's condition.

The MP60, MP70, MP80, and MP90 series represent the pinnacle of Philips' patient monitoring technology. These monitors are equipped with advanced algorithms that enhance the precision of vital sign measurements, including advanced ECG analysis capabilities that assist in detecting arrhythmias. The MP80 and MP90 models further integrate advanced monitoring technologies such as 3D visualization for hemodynamics and deep learning algorithms for early warning systems.

Connectivity is a key feature across the Philips monitoring range, with many models offering seamless integration with hospital information systems and electronic health records. This connectivity ensures that patient data is easily accessible to clinicians, promoting informed decision-making. Moreover, alarm management features are designed to minimize false alarms, significantly improving the staff's response time by focusing on critical alerts.

In summary, Philips MP20/30, MP40/50, MP60/70/80/90 monitors deliver exceptional monitoring capabilities, combining user-friendly design with advanced technology. Their varied features allow them to cater to different clinical needs, enhancing patient care and supporting healthcare professionals in their critical roles. With these monitors, healthcare facilities can achieve a new standard in patient monitoring, ensuring quality and safety in patient management.
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