Point of Care Ultrasound Evaluation in the Post-Anesthesia Unit


The purpose of this observational research study is to examine how point-of care ultrasound affects the workup and management of perioperative complications for specific clinical scenarios of low blood pressure (hypotension), low blood oxygen (hypoxemia), and endotracheal intubation in hospital settings such as the post- anesthesia care unit (PACU), intensive care unit (ICU), operating room (OR), or inpatient hospitals ward rooms.

Full Title of Study: “Point of Care Ultrasound Evaluation in the Post-Anesthesia Unit- A Collaborative Observational Study Between UCLA and Loma Linda University Medical Centers”

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Other
  • Study Primary Completion Date: August 1, 2019

Arms, Groups and Cohorts

  • POCUS group
    • When the provider in charge of covering the post-anesthesia care unit, they would apply POCUS examinations in their PACU assessment as per the study protocol of hypotensive and hypoxic events.
  • PE group
    • When the provider in charge of covering the post-anesthesia care unit, they would apply routine physcial examination techniques in their PACU assessment as per the study protocol of hypotensive and hypoxic events.

Clinical Trial Outcome Measures

Primary Measures

  • post anesthesia care (PACU) unit length of stay (minutes)
    • Time Frame: during year of the study enrollment
    • The primary outcome marker for the study was post anesthesia care (PACU) unit length of stay (minutes), with a hypothesis that patients receiving a POCUS examination for the cardiovascular or pulmonary event would have a shorter PACU LOS.

Secondary Measures

  • number of diagnosis before and after assessment
    • Time Frame: during of the study enrollment
    • Additional markers include a POCUS report completed by the performing attending anesthesiologist that included POCUS findings and the number of potential diagnoses to explain the acute event (hypoxia and/or hypotension) before and after the POCUS exam was performed..

Participating in This Clinical Trial

Inclusion Criteria

  • Patients in the post-anesthesia care unit with the following events
  • Mean arterial blood pressure <60 mmHg or <20% of pre-operative baseline mean arterial blood pressure,) hypoxemia (pulse oximetry saturation <95% or Pao2 <80), altered mental status, decreased urine output, chest pain/EKG changes, or to confirm endotracheal Lube placement.

Exclusion Criteria

  • Patients who are not able to have a point of care ultrasound examination in the post anesthesia recovery area.

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Loma Linda University
  • Collaborator
    • University of California, Los Angeles
  • Provider of Information About this Clinical Study
    • Principal Investigator: Davinder Ramsingh, MD, MD – Loma Linda University
  • Overall Official(s)
    • Davinder Ramsingh, MD, Principal Investigator, Loma Linda University


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Haskins SC, Desai NA, Fields KG, Nejim JA, Cheng S, Coleman SH, Nawabi DH, Kelly BT. Diagnosis of Intraabdominal Fluid Extravasation After Hip Arthroscopy With Point-of-Care Ultrasonography Can Identify Patients at an Increased Risk for Postoperative Pain. Anesth Analg. 2017 Mar;124(3):791-799. doi: 10.1213/ANE.0000000000001435.

Perlas A, Van de Putte P, Van Houwe P, Chan VW. I-AIM framework for point-of-care gastric ultrasound. Br J Anaesth. 2016 Jan;116(1):7-11. doi: 10.1093/bja/aev113. Epub 2015 May 7.

Shokoohi H, Boniface KS, Pourmand A, Liu YT, Davison DL, Hawkins KD, Buhumaid RE, Salimian M, Yadav K. Bedside Ultrasound Reduces Diagnostic Uncertainty and Guides Resuscitation in Patients With Undifferentiated Hypotension. Crit Care Med. 2015 Dec;43(12):2562-9. doi: 10.1097/CCM.0000000000001285.

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