The goal of this observational survey study is to evaluate the current practice variations of preoperative multidisciplinary team meetings (MDT meetings) for high risk noncardiac surgical patients. The main questions it aims to answer are:

• What is the current variation in Dutch hospitals in the practice of preoperative MDT meetings for high risk noncardiac surgical patients?
• Which facilitators and barriers influence the implementation process of preoperative MDT meetings? Participants are anesthesiologists in Dutch hospitals who will be asked to fill in a one-time survey. One anesthesiologist per anesthesiology department will be asked to fill in the survey. The survey will take approximately 5 to 10 minutes to complete.

The number of patients with multiple comorbidities is significantly growing. Medical advances have made it possible to perform challenging surgical interventions to increase life expectancy. Yet, it is this group of patients that has a high risk of complications after a surgical intervention leading to a reduction in their quality of life and self-sustainability. Current European and Dutch guidelines recommend the implementation of preoperative multidisciplinary team (MDT) meetings for high risk noncardiac surgical patients. However, the evidence underlying the guideline recommendations is scarce. Furthermore, the implementation process of a well-functioning MDT meeting can be a challenge and may sometimes lead to no MDT meeting at all. And finally, the guidelines do not specify conditions by who or how the MDT meeting should be done, for example required attending specialties or specific subjects to be discussed. A broad practice variation in preoperative MDT meetings might thus be present and could be a complicating factor in the equal treatment of patients compliant to 'best practice'. The current survey will evaluate practice variation of preoperative MDT meetings for high risk noncardiac surgical patients in the Netherlands and assess possible facilitators and barriers in the implementation process.

Inclusion Criteria:

• Currently working as anesthesiologist in a Dutch hospital

Exclusion Criteria:

• No informed consent

The participants in this study are anesthesiologists in the Netherlands, preferably those in charge of preoperative screening. One anesthesiologist per anesthesiology department may be included.

Data will be made accessible on request after agreement has been received from the entire project group. The principal investigator will communicate data availability with researchers sending the requests.

Starting 12 months after publication

Data will be made accessible on request after agreement has been received from the entire project group.