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The LAS VEGAS risk score for prediction of postoperative pulmonary complications : An observational study

Serpa Neto, Ary and Schultz, Marcus J (2018) In European Journal of Anaesthesiology 35(9). p.691-701
Abstract
BACKGROUND
Currently used pre-operative prediction scores for postoperative pulmonary complications (PPCs) use patient data and expected surgery characteristics exclusively. However, intra-operative events are also associated with the development of PPCs.

OBJECTIVE
We aimed to develop a new prediction score for PPCs that uses both pre-operative and intra-operative data.

DESIGN
This is a secondary analysis of the LAS VEGAS study, a large international, multicentre, prospective study.

SETTINGS
A total of 146 hospitals across 29 countries.

PATIENTS
Adult patients requiring intra-operative ventilation during general anaesthesia for surgery.

INTERVENTIONS
The cohort was... (More)
BACKGROUND
Currently used pre-operative prediction scores for postoperative pulmonary complications (PPCs) use patient data and expected surgery characteristics exclusively. However, intra-operative events are also associated with the development of PPCs.

OBJECTIVE
We aimed to develop a new prediction score for PPCs that uses both pre-operative and intra-operative data.

DESIGN
This is a secondary analysis of the LAS VEGAS study, a large international, multicentre, prospective study.

SETTINGS
A total of 146 hospitals across 29 countries.

PATIENTS
Adult patients requiring intra-operative ventilation during general anaesthesia for surgery.

INTERVENTIONS
The cohort was randomly divided into a development subsample to construct a predictive model, and a subsample for validation.

MAIN OUTCOME MEASURES
Prediction performance of developed models for PPCs.

RESULTS
Of the 6063 patients analysed, 10.9% developed at least one PPC. Regression modelling identified 13 independent risk factors for PPCs: six patient characteristics [higher age, higher American Society of Anesthesiology (ASA) physical score, pre-operative anaemia, pre-operative lower SpO2 and a history of active cancer or obstructive sleep apnoea], two procedure-related features (urgent or emergency surgery and surgery lasting ≥ 1 h), and five intra-operative events [use of an airway other than a supraglottic device, the use of intravenous anaesthetic agents along with volatile agents (balanced anaesthesia), intra-operative desaturation, higher levels of positive end-expiratory pressures > 3 cmH2O and use of vasopressors]. The area under the receiver operating characteristic curve of the LAS VEGAS risk score for prediction of PPCs was 0.78 [95% confidence interval (95% CI), 0.76 to 0.80] for the development subsample and 0.72 (95% CI, 0.69 to 0.76) for the validation subsample.

CONCLUSION
The LAS VEGAS risk score including 13 peri-operative characteristics has a moderate discriminative ability for prediction of PPCs. External validation is needed before use in clinical practice.

TRIAL REGISTRATION
The study was registered at Clinicaltrials.gov, number NCT01601223. (Less)
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publishing date
type
Contribution to journal
publication status
published
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in
European Journal of Anaesthesiology
volume
35
issue
9
pages
691 - 701
publisher
European Society of Anaesthesiology
external identifiers
  • scopus:85058805384
ISSN
1365-2346
DOI
10.1097/EJA.0000000000000845
language
English
LU publication?
no
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9c38fa6f-b0f5-41af-991d-793b280173aa
date added to LUP
2021-02-24 23:34:38
date last changed
2022-04-27 00:27:33
@article{9c38fa6f-b0f5-41af-991d-793b280173aa,
  abstract     = {{BACKGROUND <br>
Currently used pre-operative prediction scores for postoperative pulmonary complications (PPCs) use patient data and expected surgery characteristics exclusively. However, intra-operative events are also associated with the development of PPCs.<br>
<br>
OBJECTIVE <br>
We aimed to develop a new prediction score for PPCs that uses both pre-operative and intra-operative data.<br>
<br>
DESIGN <br>
This is a secondary analysis of the LAS VEGAS study, a large international, multicentre, prospective study.<br>
<br>
SETTINGS <br>
A total of 146 hospitals across 29 countries.<br>
<br>
PATIENTS <br>
Adult patients requiring intra-operative ventilation during general anaesthesia for surgery.<br>
<br>
INTERVENTIONS <br>
The cohort was randomly divided into a development subsample to construct a predictive model, and a subsample for validation.<br>
<br>
MAIN OUTCOME MEASURES <br>
Prediction performance of developed models for PPCs.<br>
<br>
RESULTS <br>
Of the 6063 patients analysed, 10.9% developed at least one PPC. Regression modelling identified 13 independent risk factors for PPCs: six patient characteristics [higher age, higher American Society of Anesthesiology (ASA) physical score, pre-operative anaemia, pre-operative lower SpO2 and a history of active cancer or obstructive sleep apnoea], two procedure-related features (urgent or emergency surgery and surgery lasting ≥ 1 h), and five intra-operative events [use of an airway other than a supraglottic device, the use of intravenous anaesthetic agents along with volatile agents (balanced anaesthesia), intra-operative desaturation, higher levels of positive end-expiratory pressures &gt; 3 cmH2O and use of vasopressors]. The area under the receiver operating characteristic curve of the LAS VEGAS risk score for prediction of PPCs was 0.78 [95% confidence interval (95% CI), 0.76 to 0.80] for the development subsample and 0.72 (95% CI, 0.69 to 0.76) for the validation subsample.<br>
<br>
CONCLUSION <br>
The LAS VEGAS risk score including 13 peri-operative characteristics has a moderate discriminative ability for prediction of PPCs. External validation is needed before use in clinical practice.<br>
<br>
TRIAL REGISTRATION <br>
The study was registered at Clinicaltrials.gov, number NCT01601223.}},
  author       = {{Serpa Neto, Ary and Schultz, Marcus J}},
  issn         = {{1365-2346}},
  language     = {{eng}},
  number       = {{9}},
  pages        = {{691--701}},
  publisher    = {{European Society of Anaesthesiology}},
  series       = {{European Journal of Anaesthesiology}},
  title        = {{The LAS VEGAS risk score for prediction of postoperative pulmonary complications : An observational study}},
  url          = {{http://dx.doi.org/10.1097/EJA.0000000000000845}},
  doi          = {{10.1097/EJA.0000000000000845}},
  volume       = {{35}},
  year         = {{2018}},
}