Utility of Pulmonary Echography for Evaluation of Patients Undergoing Orthopedic Surgery for Femur Fracture

Femur Fracture Clinical Trial

— LUSHIP  

Official title:

Utility of Pulmonary Echography for Evaluation of Patients Undergoing Orthopedic Surgery for Femur Fracture

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04074876
• Other study ID #: Lung US orthopedic surgery
• Status: Completed
• Start date: December 1, 2019
• Est. completion date: February 1, 2024

Study information

• Verified date: May 2024
• Source: University of Udine
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

The stratification of perioperative risk is an essential moment in the preoperative evaluation of the patient undergoing surgery especially in the setting of urgency. There is a very broad group of indexes used in the stratification of preoperative risk, like ASA-PS (American Society of Anesthesiologists Physical Status), RCRI (Revised Cardiac Risk Index) and NSQIP MICA (National Surgical Quality Improvement Program Myocardial Infarction or Cardiac Arrest). The role of some laboratory markers such as BNP has also been demonstrated. The fundamental point of all these scores is cardiocirculatory compensation. There are concerns about the value of certain preoperative exams, especially in an urgent setting. Of them all, mostly chest X-ray is questioned. Chest X-ray, indeed, needs special costs, not always short execution times and the need for X-ray exposition. Furthermore, its utility is questionable in asymptomatic patients, in which there are often no alterations to be detected. Sensibility, for Thorax x-ray, is 41% for apical flow inversion, 27% for interstitial and 6% for alveolar oedema. In chronic decompensated patients, radiographic signs of congestion have a small diagnostic accuracy, being absent in 53% of patients with capillary pulmonary pressure between 16 and 29 mmHg and in 39% of those with wedge pressure more of 30 mmHg. Pulmonary echography is a known method, that has different possible applications in diagnosis of the lung parenchymal and pleural disease. Lung is made up for 80% of water. Extravascular lung water is physiologically less than 500 ml and it increases in the case of pathology. Augmentation of this water is detected reliably by echography. B-lines are an echographic artefact that allows recognition of interstitial syndrome, having a sensibility of 93,4% and specificity of 93%. Presence of 3 or more of B-lines in 2 out of 4 fields of each hemithorax can identify a cardiac problem like pulmonary sub-oedema or chronic heart failure and it is known as Diffuse Interstitial Syndrome. Thorax X-ray, instead, detects these situations only when extravascular water exceeds 30%. That's why echography has been proposed as a method for evaluation of extravascular pulmonary water. Moreover, when lung air component is lost enough in subpleural area, it is possible to find little consolidations. A method of reporting different grades of loss of aeration of the lung (normal pattern, isolated B lines, coalescent B lines and consolidation) has been proposed as a tool for monitoring the aeration itself. Pleural effusion is another sign that echography could detect. It is perfectly transonic and easy to see. Also, in this case, therefore, ultrasound is superior to X-ray, that has got sensibility, specificity and diagnostic accuracy of 67%, 70% and 67% respectively. All this information could provide useful elements for preoperative patient management. Echography, indeed, is a bedside and real-time method, that can give rapid information about the cardiocirculatory situation of patients. Using this method, that is non-invasive and easy, useful elements could be obtained, that could contribute to a better overview of clinical conditions of the patient in the preoperative setting. In the particular field of urgency and, among all, in the setting of orthopaedic urgency for femur fracture, there is a need for a more rapid and comprehensive evaluation, giving that the patient has to be operated within 24-48 hours. This timing is often incompatible with a long and time-consuming evaluation of the patients. Furthermore, a complete cardiologic examination is beyond the requirements of international guidelines for intermediate surgery, since it doesn't change the perioperative management. In this particular setting, hence, pulmonary echography could represent a more reliable and easier tool compared to thorax X-ray, often performed in non-optimal conditions (supine position, only anteroposterior chest X-ray). In recent studies, percentage of major adverse cardiovascular events (atrial fibrillation, flutter, acute heart failure and non-fatal acute myocardial infarction) after hip fracture has settled around 24.8%. This data confirms the importance of a valid preoperative stratification in this setting. From this perspective, this study aims to evaluate the utility of pulmonary echography as a preoperative method of investigation. The principal aim is to evaluate the utility of the pulmonary echography in predicting the risk of patients undergoing urgent surgery for femur fracture. Alternative objectives are: - Evaluate the predictability of LUS (lung ultrasound score) on the occurrence of MACE (major adverse cardiovascular events) - Verify feasibility of echographic evaluation in the estimation of fluid tolerance of patients undergoing orthopaedic surgery. - Evaluation of postoperative pulmonary complications (PPC)

Recruitment information / eligibility

• Status: Completed
• Enrollment: 877
• Est. completion date: February 1, 2024
• Est. primary completion date: September 21, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 65 Years and older

Eligibility

Inclusion Criteria:

• Patients more of 65 years of age with femur fracture undergoing urgent surgery
• patients can undergo spinal anaesthesia

Exclusion Criteria:

• Absent consent, patients with acute heart failure or recent major cardiac events (< 6 months), known pulmonary parenchyma diseases (including pneumonia), general anaesthesia during surgery

Related Conditions & MeSH terms

• Femoral Fractures
• Femur Fracture
• Fractures, Bone

Intervention

Device:
• Pulmonary echography
Pulmonary echography during preoperative evaluation for patients undergoing urgency orthopedic surgery for femur fracture. Pulmonary ultrasound will evaluate the presence of one of four patterns defined by Lung Ultrasound Score in the 6 fields for each hemithorax of the patient (2 anterior, 2 lateral and 2 posterior). Each region is defined by axillary lines (anterior and posterior) and then is divided into 2 subregions (superior and inferior), thus defining the 6 fields. For a comprehensive exam, all intercostal spaces in the setting of each field will have to be examined by sliding the probe along them . A score will be used for each field that will have this definition: 0: normal pattern (A-lines) 1: multiple B lines (at least 3 for field), well defined. 2: B lines coalescent 3: consolidation of any dimension

Locations

Country	Name	City	State
Italy	S. Maria della Misericordia Hospital	Udine

Sponsors (1)

Lead Sponsor	Collaborator
University of Udine

Country where clinical trial is conducted

Italy, 

References & Publications (19)

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* Note: There are 19 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Accuracy of ultrasound in predicting MACE (major adverse cardiovascular events) in the setting of the study	Patients are classified by echography pattern in four category (normal pattern (A-lines), well defined multiple B lines (at least 3 for field), B lines coalescent, consolidation of any dimension). After surgery, the occurrence of MACE during the whole follow-up period will be evaluate in the four category of patients.	pulmonary echography is made during pre-operative anesthesiologic evaluation, patients are in follow up for MACE for 30 days
Secondary	Feasibility of echography in evaluation of the tolerance to fluid challenge during surgery	Estimate a correlation between echography and fluid challenge during surgery	pulmonary echography is made during pre-operative anesthesiologic evaluation, patients are evaluated during surgery for fluid tollerance
Secondary	finding postoperative pulmonary complications	Follow up for patients after orthopedic surgery and value consecutive pulmonary complications	pulmonary echography is made during pre-operative anesthesiologic evaluation, patients are in follow up for postoperative pulmonary complications for 30 days