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Clinical trial information and results are updated daily from ClinicalTrials.gov. The latest data update was conducted on 01/26/2021.

A Real-world Study to Examine the Relationship Between Simple Physical Functioning Tests, Complications and Recovery Following Abdominal Surgery.

Clinicaltrials.gov identifier NCT03930784

Recruitment Status Completed

First Posted April 29, 2019

Last update posted April 29, 2019

Study Description

Brief summary:

Background: Complications impact physical and psychological recovery and are associated with financial cost. General physical function has not been studied in relation to the development of surgical complications in this cohort. Objective: Evaluate the physical function performance differences between those who develop complications and those who do not and determine their impact on recovery. Design: Observational Setting: The pre-operative assessment unit in the University Hospital Limerick. Patients: Forty-nine participants who were planned to undergo abdominal surgery were recruited & 43 completed the study. Main outcome measure: Demographics, physical function, lung function, surgical parameters, complications and recovery data was collected.

  • Condition or Disease:Surgery--Complications
    Physical Activity
  • Intervention/Treatment: Other: Nil intervention
  • Phase: N/A
Detailed Description


Study Design
  • Study Type: Observational
  • Actual Enrollment: 49 participants
  • Observational Model: Cohort
  • Time Perspective: Prospective
  • Official Title: A Real-world Study to Examine the Relationship Between Simple Physical Functioning Tests, Complications and Recovery Following Abdominal Surgery - a Prospective Cohort Study
  • Actual Study Start Date: September 2016
  • Actual Primary Completion Date: July 2017
  • Actual Study Completion Date: July 2017
Groups and Cohorts
Groups/Cohorts Intervention/treatment
: Participants
Divided for analysis as having suffered post-operative complications or not
Other: Nil intervention
Outcome Measures
  • Primary Outcome Measures: 1. Number of participants with complications & changes over time points. [ Time Frame: (1) 0-29 days, (2) 30 and (3) 60 days post operatively ]
    Defined as occuring within the first 30 days post-operatively using the Clavien Dindo classification
  • Secondary Outcome Measures: 1. Spirometry to measure lung function [ Time Frame: 2-4 weeks pre-operatively ]
    Spirometry was performed to obtain the participant's vital capacity, forced vital capacity, forced expiratory pressure in one second ratio and peak expiratory flow rate. The instructions and methods used were as per the American Thoracic Society Guidelines 2005. Testing required participants to perform two different tests, three times each. In the initial test, participants were seated and instructed to inhale as deeply as possible before blowing into the spirometer until they felt they needed to inhale again. The second test required them to be seated and after a maximal inhalation, to exhale as forcefully as they could until they felt the need to inhale again. Results were recorded numerically and as a percentage compared to norms of the same sex, race, age, and height. This data was generated by the spirometer (Vitalograph Model 2120 Hand Held REF 79XXX) post testing.
  • 2. Peak Cough Flow to measure cough strength [ Time Frame: 2-4 weeks pre-operatively ]
    This was performed by attaching a naso-oral mask to a peak flow meter (Mini- Wright Peak Flow Meter, Clement Clarke International). Figure 2.5. Participants were requested to inhale maximally, in a seated position, prior to placing the mask over their nose and mouth, and coughing forcefully. This was repeated three times to give numerical scores. The highest score was recorded. New face masks and flow meters were used for each patient. Results were recorded in litres per minute (L/min). The researcher attempted to limit any reliability bias by using standardised instructions and corrections as required.
  • 3. Six Minute Walk Test to measure exercise capacity [ Time Frame: 2-4 weeks pre-operatively ]
    This was performed as per the ATS guidelines 2002, as recommended by Biccard 2005. Participants were instructed to walk up and down a thirty-metre distance, over a six-minute period, and each length was recorded. The thirty-metre distance was measured with each metre marked, and the same area used for each test. If they were not at a start or endpoint at the six-minute mark, the distance that they had covered was recorded. Predicted distance was calculated against normative data based on age, sex, weight and height. Participants peak oxygen uptake (VO2Peak) was also calculated as per Ross et al 2010.
  • 4. Thirty Second Sit to Stand Test to measure endurance [ Time Frame: 2-4 weeks pre-operatively ]
    Participants were asked to go from a seated to standing position and vice versa, as many times as possible in thirty seconds, without the use of their hands to assist. The same standard height chair (17 inches) was used throughout which was placed against a wall for safety. Participants were instructed by the researcher when to start and stop, using a standard stopwatch. When the clock reached thirty seconds, if they were more than half way to a full stand, this was regarded as a stand.Results were recorded as numerical data.
  • 5. Grip strength. [ Time Frame: 2-4 weeks pre-operatively ]
    Grip strength was recorded, using a Baseline hydraulic hand held dynamometer, as a measure of overall physical function, independent of lower limb strength.Participants were asked to squeeze the dynamometer maximally for a period of 3 seconds, the result was recorded and the test repeated twice more. An average of the scores was recorded in pounds (lbs).
  • 6. Change over time in activity levels. [ Time Frame: (1) 2-4 weeks pre-operatively, (2) 30 and (3) 60 days post operatively ]
    This data was collected by the researcher using the short form International Physical Activity Questionnaire (IPAQ) which is a self-reported measure of activity levels in the previous seven days (IPAQ Research Committee 2005). The IPAQ incorporates questions relating to vigorous and moderate activities, as-well as walking and sitting time. It uses patient subjective reports to quantify the time spent, if any, doing the previously mentioned activities in the previous week. The patients weekly metabolic equivalents (METS) were then calculated using the formula and descriptors provided in the scoring protocol.Sedentary time was calculated in weekly minutes by multiplying their daily minutes answers by seven.
  • 7. Changes in perceived recovery over time [ Time Frame: 30 and 60 days post operatively ]
    Participants were asked to self-assess their own physical recovery using the same questions and classification as used in a study by Onerupp et al 2015.
Eligibility Criteria
  • Ages Eligible for Study: 18 Years and older (Adult, Older Adult)
  • Sexes Eligible for Study: All
  • Accepts Healthy Volunteers: No
  • Sampling Method: Non-Probability Sample
  • Study Population: Participants scheduled to under-go elective abdominal surgery

Inclusion Criteria:

- Written consent to participate in the study

- Eighteen years or above

- Planned for elective abdominal surgery

- American Society of Anaesthesia physical status score <4. Exclusion Criteria: - Abdominal surgery within one year prior to study entry - Unable or unwilling to give informed consent - Inability (cognitive) to perform the pre-operative tests, as characterised by inability to understand the information in the patient information leaflet - Current systemic acute illness - Scheduled for non-abdominal surgery - Unstable angina or myocardial infarction in the previous month - Physical limitation precluding inability to participate in pre-operative tests.

Contacts and Locations
Sponsors and Collaborators

University Hospital of Limerick

Trinity College Dublin

More Information
  • Responsible Party: University Hospital of Limerick
  • ClinicalTrials.gov Identifier: NCT03930784 History of Changes
  • Other Study ID Numbers: 043/16
  • First Posted: April 29, 2019 Key Record Dates
  • Last Update Posted: April 29, 2019
  • Last Verified: April 2019
  • Individual Participant
    Data (IPD) Sharing
  • Plan to Share IPD: No
  • Studies a U.S. FDA-regulated Drug Product: No
  • Studies a U.S. FDA-regulated Device Product: No
  • Keywords provided by University Hospital of Limerick: physical function