Inflammation Clinical Trial
Official title:
Mängden kvävgasbubblor i Blodet Efter Dykning Vid Syrgasandning jämfört Med Luftandning
Primary objective: - Assessment of venous gas emboli load post diving when breathing normobaric oxygen compared to air. Secondary objective: - Assessment of fluid markers of central nervous system injury in blood post diving - Assessment of fluid markers of inflammation and endothelial dysfunction in blood post diving Tertiary objective: - Assessment of DCS frequency
This is a prospective, double blinded, randomized, cross-over study in Sweden. The study was performed in two different sets, each containing standardized dives in a wet hyperbaric chamber. The dives included movement on depth. In each study set 16-32 professional divers performed no-decompression dives to a depth of 42 metres of seawater (msw). The gas used during the dives was compressed air. After surfacing the divers breathed either normobaric oxygen or normobaric air on a demand mask. Timing of oxygen/air-breathing differed between study sets. The content of breathing gas was unknown to both divers and examining personnel. Immediately post dive the divers were assessed using either transthoracic doppler ultrasound (TTD) or transthoracic 2-D ultrasound (TTE) to determine VGE load, time to VGE detection and VGE duration. Signs of DCS were actively sought. TTD measurements were done every five minutes during the first 30 minutes, thereafter every 15 minutes during 90 minutes. TTE was performed every 30 minutes, using an apical 4-chamber view. Blood samples were obtained pre-dive, 30-45 minutes post-dive and 120 minutes post-dive. Set 1: 16 divers, divided into two equal groups (A and B). Dive to 42 msw during 10 min with a safety stop at five msw during three min. Immediately post dive breathing of oxygen (group A) or air (group B) during 30 min. VGE load, time to VGE detection and VGE duration is recorded. Blood samples were obtained pre-dive and 30 and 120 minutes post-dive. After 48 hours, the dives were repeated with switched gases between the groups. Set 2: 32 divers, divided into two equal groups (A and B). Dive to 42 msw during 10 min with a safety stop at five msw during three min. Fifteen minutes post dive breathing of oxygen (group A) or air (group B) during 30 min. VGE load, time to VGE detection and VGE duration is recorded. Blood samples were obtained pre-dive and 45 and 120 minutes post-dive, from the first 16 divers. After 48 hours, the dives were repeated with switched gases between the groups. Two further planned sets with repeated diving and shorter duration of oxygen/air-breathing were never carried through. AE including SAE will be recorded during the study. DCS may be considered either an AE or SAE depending on severity. Ongoing AE and SAE will be followed up. ;
Status | Clinical Trial | Phase | |
---|---|---|---|
Completed |
NCT03995979 -
Inflammation and Protein Restriction
|
N/A | |
Completed |
NCT03255187 -
Effect of Dietary Supplemental Fish Oil in Alleviating Health Hazards Associated With Air Pollution
|
N/A | |
Completed |
NCT04507867 -
Effect of a NSS to Reduce Complications in Patients With Covid-19 and Comorbidities in Stage III
|
N/A | |
Completed |
NCT03577223 -
Egg Effects on the Immunomodulatory Properties of HDL
|
N/A | |
Completed |
NCT04383561 -
Relationship Between LRG and Periodontal Disease
|
N/A | |
Active, not recruiting |
NCT03622632 -
Pilot Study to Measure Uric Acid in Traumatized Patients: Determinants and Prognostic Association
|
||
Completed |
NCT06216015 -
Exercise Training and Kidney Transplantation
|
N/A | |
Completed |
NCT04856748 -
Nomogram to Diagnose Prostatic Inflammation (PIN) in Men With Lower Urinary Tract Symptoms
|
||
Completed |
NCT05529693 -
Efficacy of a Probiotic Strain on Level of Markers of Inflammation in an Elderly Population
|
N/A | |
Recruiting |
NCT05415397 -
Treating Immuno-metabolic Depression With Anti-inflammatory Drugs
|
Phase 3 | |
Recruiting |
NCT05670301 -
Flemish Joint Effort for Biomarker pRofiling in Inflammatory Systemic Diseases
|
N/A | |
Recruiting |
NCT05775731 -
Markers of Inflammation and of the Pro-thrombotic State in Hospital Shift and Day Workers
|
||
Recruiting |
NCT04543877 -
WHNRC (Western Human Nutrition Research Center) Fiber Intervention Study
|
Early Phase 1 | |
Completed |
NCT03859934 -
Metabolic Effects of Melatonin Treatment
|
Phase 1 | |
Completed |
NCT03429920 -
Effect of Fermented Soy Based Product on Cardiometabolic Risk Factors
|
N/A | |
Completed |
NCT06065241 -
Quantifiably Determine if the Botanical Formulation, LLP-01, Has a Significant Clinical Effect on Proteomic Inflammatory Biomarkers and Epigenetic Changes in Healthy, Older Individuals.
|
N/A | |
Completed |
NCT05864352 -
The Role of Dietary Titanium Dioxide on the Human Gut Microbiome and Health
|
||
Completed |
NCT03318731 -
Efficacy and Safety of Fenugreek Extract on Markers of Muscle Damage and Inflammation in Untrained Males
|
N/A | |
Not yet recruiting |
NCT06134076 -
Comparing Effects of Fermented and Unfermented Pulses and Gut Microbiota
|
N/A | |
Not yet recruiting |
NCT06159543 -
The Effects of Fresh Mango Consumption on Cardiometabolic Outcomes in Free-living Individuals With Prediabetes
|
N/A |