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Abdominal Pressure

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Antonio Braschi – One of the best experts on this subject based on the ideXlab platform.

  • Respiratory variation of intra-Abdominal Pressure: indirect indicator of Abdominal compliance?
    Intensive Care Medicine, 2008
    Co-Authors: Evelina Sturini, Andrea Saporito, Michael Sugrue, Michael J. A. Parr, Gillian Bishop, Antonio Braschi

    Abstract:

    Objective To assess if the observed respiratory cycle-related variation in intra-Abdominal Pressure is reliably quantifiable and a possible indirect indicator of Abdominal compliance. Secondary issues were to assess the roles played by respiratory parameters in determining this oscillation and by patients’ position in increasing their intra-Abdominal Pressure. Design and setting Prospective observational study in a 26-bed medical-surgical intensive care unit. Patients Sixteen consecutive patients admitted to intensive care for at least 24 h, requiring mechanical ventilation and intra-Abdominal Pressure monitoring. Measurements and results Intra-Abdominal Pressure was measured with a modified Kron technique; its waveform was recorded and inspiratory and expiratory values were measured during five consecutive respiratory cycles for 5 days, both in the supine and the 30° head-up position. Inspiratory values were significantly higher than expiratory values ( p = 0.001) and a correlation was found between their difference and intra-Abdominal Pressure basal values ( p = 0.025). A positive linear relationship was shown between intra-Abdominal Pressure and the amplitude of its oscillation ( r = 0.4), particularly in the subgroup of patients with intra-Abdominal hypertension ( r = 0.9). Intra-Abdominal Pressure was lower in patients supine than in the 30° head-up position ( p = 0.001). Conclusions Respiratory cycle-related variations in intra-Abdominal Pressure were specifically investigated, quantified and shown as linearly increasing with end-expiratory intra-Abdominal Pressure; this phenomenon could be explained by patients’ Abdominal compliance status. Supine posture should be an important consideration in specific patients affected by intra-Abdominal hypertension.

  • Respiratory variation of intra-Abdominal Pressure: indirect indicator of Abdominal compliance?
    Intensive care medicine, 2008
    Co-Authors: Evelina Sturini, Andrea Saporito, Michael Sugrue, Gillian Bishop, Michael Parr, Antonio Braschi

    Abstract:

    Objective
    To assess if the observed respiratory cycle-related variation in intra-Abdominal Pressure is reliably quantifiable and a possible indirect indicator of Abdominal compliance. Secondary issues were to assess the roles played by respiratory parameters in determining this oscillation and by patients’ position in increasing their intra-Abdominal Pressure.

Michael Sugrue – One of the best experts on this subject based on the ideXlab platform.

  • Respiratory variation of intra-Abdominal Pressure: indirect indicator of Abdominal compliance?
    Intensive Care Medicine, 2008
    Co-Authors: Evelina Sturini, Andrea Saporito, Michael Sugrue, Michael J. A. Parr, Gillian Bishop, Antonio Braschi

    Abstract:

    Objective To assess if the observed respiratory cycle-related variation in intra-Abdominal Pressure is reliably quantifiable and a possible indirect indicator of Abdominal compliance. Secondary issues were to assess the roles played by respiratory parameters in determining this oscillation and by patients’ position in increasing their intra-Abdominal Pressure. Design and setting Prospective observational study in a 26-bed medical-surgical intensive care unit. Patients Sixteen consecutive patients admitted to intensive care for at least 24 h, requiring mechanical ventilation and intra-Abdominal Pressure monitoring. Measurements and results Intra-Abdominal Pressure was measured with a modified Kron technique; its waveform was recorded and inspiratory and expiratory values were measured during five consecutive respiratory cycles for 5 days, both in the supine and the 30° head-up position. Inspiratory values were significantly higher than expiratory values ( p = 0.001) and a correlation was found between their difference and intra-Abdominal Pressure basal values ( p = 0.025). A positive linear relationship was shown between intra-Abdominal Pressure and the amplitude of its oscillation ( r = 0.4), particularly in the subgroup of patients with intra-Abdominal hypertension ( r = 0.9). Intra-Abdominal Pressure was lower in patients supine than in the 30° head-up position ( p = 0.001). Conclusions Respiratory cycle-related variations in intra-Abdominal Pressure were specifically investigated, quantified and shown as linearly increasing with end-expiratory intra-Abdominal Pressure; this phenomenon could be explained by patients’ Abdominal compliance status. Supine posture should be an important consideration in specific patients affected by intra-Abdominal hypertension.

  • Respiratory variation of intra-Abdominal Pressure: indirect indicator of Abdominal compliance?
    Intensive care medicine, 2008
    Co-Authors: Evelina Sturini, Andrea Saporito, Michael Sugrue, Gillian Bishop, Michael Parr, Antonio Braschi

    Abstract:

    Objective
    To assess if the observed respiratory cycle-related variation in intra-Abdominal Pressure is reliably quantifiable and a possible indirect indicator of Abdominal compliance. Secondary issues were to assess the roles played by respiratory parameters in determining this oscillation and by patients’ position in increasing their intra-Abdominal Pressure.

  • Intra-Abdominal Pressure
    Clinical Intensive Care, 1995
    Co-Authors: Michael Sugrue

    Abstract:

    The Abdominal cavity is the space limited by the diaphragm above and the musculo-aponeurotic perineum below, the lumbosacral spine posteriorly and the walls of the Abdominal cavity anterolaterally. Intra-Abdominal Pressure (IAP) is a steady-state Pressure within the Abdominal cavity and while transient rapid increases occur during muscular activity and straining,1 the normal range is 0-5 mmHg. What constitutes increased intraAbdominal Pressure is arbitrary, and while some authors define an increase as a Pressure ≥10 mmHg,2 others suggest ≥14 mmHg,3 ≥18 mmHg4 or ≥20 mmHg,5,6 It would be reasonable to assume that an IAP ≥15 mmHg is elevated.

Hae Ja Lim – One of the best experts on this subject based on the ideXlab platform.

  • Effect of Positive End Expiratory Pressure on Intra-Abdominal Pressure and Abdominal Perfusion Pressure at an Increased Intra-Abdominal Pressure
    Korean Journal of Anesthesiology, 2007
    Co-Authors: Choon Hak Lim, Younsuck Koh, Hye Won Lee, Ji Young Khil, Sung Ok Suh, Young Chol Kim, Hae Ja Lim

    Abstract:

    S 31 Received:August 1, 2007 Corresponding to:Hye Won Lee, Department of Anesthesiology and Pain Medicine, Korea University Medical Center, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul 136-705, Korea. Tel: 82-2-920-5478, Fax: 822-928-2275, E-mail: hyewonmd@unitel.co.kr. This study was supported by the grant from the Korea Health 21 R&D Project of the Ministry of Health & Welfare (grant no. 02-PJ3-PG6EV09-0001) and the Brain Korea 21 Project of the Ministry of Education and Human Resources Development, Republic of Korea. The 6 Joint Scientific Congress of the JSICM and KSCCM, 2006, Osaka. Effect of Positive End Expiratory Pressure on Intra-Abdominal Pressure and Abdominal Perfusion Pressure at an Increased Intra-Abdominal Pressure