Perioperative Point-of-Care Ultrasound

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-04-04

Study Completion Date

2018-09-30

Brief Summary

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The goal of this study is to assess the impact of perioperative point-of-care ultrasound (POCUS) assessment on patient-important outcomes (e.g. hospital length of stay, length of stay in recovery, mortality etc.) and perioperative patient management strategies, in patients undergoing non-elective non-cardiac surgeries.

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Detailed Description

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Preoperative patients undergoing emergency non-cardiac surgery will be approached for study recruitment and participation. Study participants will be randomized to receive, or not, a preoperative POCUS exam as part of their routine preoperative assessment. Patients randomized to receiving a POCUS exam will undergo a protocolized focused cardiac ultrasound, lung and pleural ultrasound and a gastric volume and content ultrasound assessment. Results of this exam will be disclosed to the anesthesiologist and primary care team. Randomization will be stratified by the presence of any sign(s) of cardiorespiratory failure. Signs of cardiorespiratory failure are defined as: systolic blood pressure \<90 mmHg, heart rate\>100, respiratory rate \>24, Oxygen saturation \<90%, requirement of supplemental oxygen or mechanical ventilation, new requirement of loop diuretics in current hospital admission, chest pain, newly diagnosed ECG changes, requirement of vasoactive drugs, signs of pre-renal azotemia (BUN:creatinine ratio \>20). Outcome data will be collected prospectively. Investigators performing and interpreting the scan will disclose the results to the care team but will not participate in patient care. Primary and secondary outcome data collection will be performed by an investigator blinded to patient assignment. The primary outcome is post anesthetic care unit length-of-stay. The secondary outcomes are post-randomization hospital length of stay, number of operating room (OR) delays for optimization, alterations in anesthetic management (using a brief anesthesiologist-administered survey), intensiveness of OR management (invasive blood pressure monitoring, central venous pressure monitoring, intraoperative TEE), new peri-operative diuretic use, new intensive care admission rates, mortality during this admission, amount/frequency of postoperative investigations, rates of detection of new pathologies identified by preoperative POCUS exam and the rates of adequately diagnostic POCUS studies.

Conditions

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Anesthesia Ultrasound Emergencies Operation Ultrasonography Surgery

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Randomized parallel group controlled clinical trial

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

SINGLE

Outcome Assessors

Outcomes assessor blinded to patient assignment.

Study Groups

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Scan group

Patients randomized to the scan group (intervention arm) will receive a preoperative point-of-care ultrasound (POCUS) exam as an adjunct to their preoperative assessment, the results of which will be disclosed to the anesthesiologist and the patient care team. This POCUS exam will include a focused cardiac ultrasound, a lung and pleural ultrasound, and a gastric volume and content ultrasound assessment. Patients randomized to this arm may also receive repeat POCUS exams as needed and as clinical conditions change. These repeat exams may be requested by the anesthesiologist or patient care team.

Group Type EXPERIMENTAL

Scan

Intervention Type DIAGNOSTIC_TEST

The preoperative point of care ultrasound includes a protocolized focused cardiac ultrasound, lung and pleural ultrasound and a gastric volume and content ultrasound assessment, all of which will be performed as an adjunct to the anesthesiologist's assessment. The result of this ultrasound examination will be disclosed to the anesthesiologist and patient care teams. Repeat ultrasounds may be done as the patient's clinical condition changes, or as requested by the anesthesiologist or patient care team.

No scan group

Patients randomized to no scan (control arm) will not receive a preoperative point-of-care ultrasound exam. Patients in this arm will receive the standard-of-care; a routine preoperative assessment and physical examination by their attending anesthesiologist.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Scan

The preoperative point of care ultrasound includes a protocolized focused cardiac ultrasound, lung and pleural ultrasound and a gastric volume and content ultrasound assessment, all of which will be performed as an adjunct to the anesthesiologist's assessment. The result of this ultrasound examination will be disclosed to the anesthesiologist and patient care teams. Repeat ultrasounds may be done as the patient's clinical condition changes, or as requested by the anesthesiologist or patient care team.

Intervention Type DIAGNOSTIC_TEST

Other Intervention Names

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POCUS Ultrasound examination Point-of-care ultrasound

Eligibility Criteria

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Inclusion Criteria

* Patients aged \>17 years
* Undergoing urgent or emergent non-cardiac surgery classified as intermediate or high risk according to American Heart Association(AHA)/American College of Cardiology(ACC) guidelines.

These include vascular surgeries (supra or infra-inguinal), intraperitoneal surgeries, intra-thoracic surgeries, head and neck surgeries, spine surgeries, urologic surgeries, and proximal extremity orthopedic surgeries. Peripheral extremity surgeries (wrist or below, and ankle or below), in addition to appendectomies and cholecystectomy surgeries will be excluded from this study.

Exclusion Criteria

* Patients scheduled for elective or pre-booked surgeries
* Patients undergoing cardiac surgeries
* Patients undergoing low risk procedures e.g. endoscopic procedures, superficial skin, subcutaneous tissue, breast, ophthalmic, and ambulatory surgeries
* Patients undergoing orthopedic peripheral extremity surgeries (e.g. ankle, wrist, hand, foot)
* Patients who have had an echo during the current hospital admission prior to recruitment.
* Patients where the investigator performing or over-reading the POCUS scan is required to participate directly in perioperative patient care (e.g. anesthesiologist co-investigator performing or over-reading scan is on-call for this emergency case)

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No