Hemodynamic Effects of Norepinephrine Reduction on Critical Closing Pressure in Distributive Shock
Recruiting
Observational Study
Distributive Shock
Hemodynamic Assessment
Critical Illness
No Placebo Group
Every participant receives an active treatment — no one gets a placebo.
No Study Drug
Researchers observe your health over time — no experimental treatment is given.
At a Glance
- Age
- 18 and older
- Sex
- Any
- Study type
- Observational
- Participants needed
- 30 (estimated)
- Sponsor
- Peking Union Medical College Hospital · Other
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About This Trial
This study prospectively observes changes in critical closing pressure (Pcc) and derived hemodynamic parameters in mechanically ventilated distributive shock patients when clinically indicated norepinephrine dose reduction is performed by the attending physician. Pcc is measured before and 30 minutes after dose reduction using a stepwise inspiratory hold maneuver via PiCCO monitoring.
Trial Locations
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Eligibility Criteria
Inclusion Criteria:
1. Adult distributive shock patients aged ≥18 years;
2. Receiving norepinephrine infusion with MAP in the 75-85 mmHg range;
3. PiCCO catheter in situ;
4. Under mechanical ventilation;
5. Clinically indicated norepinephrine dose reduction per attending physician judgment.
Exclus…
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