Related Experiment Video
Updated: Jan 28, 2026
07:44
Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction
Published on: March 25, 2022
6.7K
Sublingual microcirculation in pancreatico-biliary surgery: An observational study
Mustafa Suker1, M Sherezade Tovar Doncel2, Alexandre A Pinto Lima3
1Department of Surgery, Erasmus MC University Medical Centre, Rotterdam, The Netherlands.
Clinical Hemorheology and Microcirculation
|March 12, 2019
Summary
Changes in perfused vessels density (PVD) and proportion of perfused vessels (PPV) in the first 24 hours after surgery can predict a complicated perioperative course in patients undergoing pancreatico-biliary surgery.
Area of Science:
- Surgical oncology
- Critical care medicine
- Vascular biology
Background:
- Sublingual microcirculation assessment is explored for goal-directed fluid therapy.
- Observational cohort study design employed.
Purpose of the Study:
- Identify sublingual microcirculation parameters for goal-directed fluid therapy.
- Correlate microcirculatory changes with perioperative complications.
Main Methods:
- 16 patients undergoing elective pancreatico-biliary surgery included.
- Sublingual microcirculation measured pre-surgery (T0), early post-op (T1), and day 4 (T2).
- Parameters: MFI, TVD, PVD, and PPV.
Main Results:
- Significant differences in PVD small vessels (PVDs) and PPV small vessels (PPVs) between T0 and T1 in complicated vs. uncomplicated patients.
- Delta PVDs: -0.1 vs -8.2 (p=0.01); Delta PPVs: 7.0% vs -15.5% (p=0.01).
Conclusions:
- Changes in PVD and PPV are significant predictors of perioperative complications.
- A decrease in PVD and PPV within 24 hours post-surgery indicates a high risk of complications.
Related Concept Videos
01:11Observational Studies
11.0K
Observational studies are a type of analytical study where researchers observe events without any interventions. In other words, the researcher does not influence the response variable or the experiment's outcome.
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One...
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One...
11.0K
02:30Naturalistic Observations
17.1K
If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...
17.1K
01:23Actor-Observer Effect
371
The actor-observer effect, a cognitive bias closely linked to the fundamental attribution error, refers to the tendency for individuals to attribute their behavior to external, situational factors while explaining others’ behavior in terms of internal, dispositional traits. This asymmetry in attribution significantly influences social perception and judgment.Cognitive Mechanisms Behind the EffectTwo primary psychological mechanisms contribute to the actor-observer effect: differences in...
371
01:12Observational Learning
888
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
888
01:08Data Collection by Observations
14.8K
Data collection refers to a systematic way of obtaining, observing, measuring, and analyzing accurate information. Observational studies are one of the most widely used methods of data collection. It involves collecting data by observing the behavior and physical characteristics of a sample without making any modifications to the sample.
An astronomer viewing the motion and brightness of stars in the sky and recording the data is an example of observational data collection. A botanist recording...
An astronomer viewing the motion and brightness of stars in the sky and recording the data is an example of observational data collection. A botanist recording...
14.8K
01:22Case Studies
13.5K
There are many research methods available to psychologists in their efforts to understand, describe, and explain behavior and the cognitive and biological processes that underlie it.
13.5K