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Once you start fluid therapy in a shock patient, the next phase is all about constant reassessment. Think of it like checking whether the “fuel” you’re giving the body is actually reaching the engine.
Once you start fluid therapy in a shock patient, the next phase is all about constant reassessment. Think of it like checking whether the “fuel” you’re giving the body is actually reaching the engine.
If you’ve already given what should be enough fluids but the patient still isn’t improving, that’s your cue to investigate why. There are many possible reasons, and each one can block resuscitation in a different way. For example:
If you’ve already given what should be enough fluids but the patient still isn’t improving, that’s your cue to investigate why. There are many possible reasons, and each one can block resuscitation in a different way. For example:
- Maybe the patient still hasn’t received enough volume.
- Maybe the patient still hasn’t received enough volume.
- Maybe they’re losing fluid somewhere—bleeding, third‑spacing, or ongoing losses.
- Maybe they’re losing fluid somewhere—bleeding, third‑spacing, or ongoing losses.
- The heart might not be pumping well, or fluid could be building up around it.
- The heart might not be pumping well, or fluid could be building up around it.
- Blood vessels might be too dilated or too constricted.
- Blood vessels might be too dilated or too constricted.
- The body might be struggling with low blood sugar, electrolyte imbalances, arrhythmias, or severe acid–base problems.
- The body might be struggling with low blood sugar, electrolyte imbalances, arrhythmias, or severe acid–base problems.
- Poor oxygenation, anemia, low venous return, hypothermia, brain disease, or adrenal insufficiency can also stall progress.
- Poor oxygenation, anemia, low venous return, hypothermia, brain disease, or adrenal insufficiency can also stall progress.
In teaching terms: if resuscitation isn’t working, assume there’s a hidden barrier and go find it.
In teaching terms: if resuscitation isn’t working, assume there’s a hidden barrier and go find it.
If you have a central venous pressure line, you can check whether the patient is approaching your target CVP. If not, or if you don’t have CVP at all, you perform a fluid challenge—a small, rapid bolus of crystalloids or colloids. If the patient perks up, you’ve confirmed the problem was simply inadequate volume, and you continue adjusting fluids accordingly. Ultrasound can also help you judge heart function and volume status when used by someone experienced.
If you have a central venous pressure line, you can check whether the patient is approaching your target CVP. If not, or if you don’t have CVP at all, you perform a fluid challenge—a small, rapid bolus of crystalloids or colloids. If the patient perks up, you’ve confirmed the problem was simply inadequate volume, and you continue adjusting fluids accordingly. Ultrasound can also help you judge heart function and volume status when used by someone experienced.
But sometimes, even after correcting volume and fixing underlying issues, the patient remains hypotensive. At that point, the problem isn’t fuel—it’s the circulation system itself. That’s when vasopressors come in. These drugs tighten blood vessels or support heart function so blood pressure rises enough to perfuse organs. Dopamine, norepinephrine, vasopressin, and phenylephrine are common choices, and if the heart is weak, dobutamine can help boost contractility.
But sometimes, even after correcting volume and fixing underlying issues, the patient remains hypotensive. At that point, the problem isn’t fuel—it’s the circulation system itself. That’s when vasopressors come in. These drugs tighten blood vessels or support heart function so blood pressure rises enough to perfuse organs. Dopamine, norepinephrine, vasopressin, and phenylephrine are common choices, and if the heart is weak, dobutamine can help boost contractility.
Once the patient stabilizes, these medications are slowly reduced.
Once the patient stabilizes, these medications are slowly reduced.
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