A basic measure, not an afterthought
Movement exercises are easily treated as the self-evident thing done in passing. The S3 guideline on VTE prophylaxis frames them differently. It lists three groups of measures (statement 6.1): basic, physical and pharmacological. The basic measures come first:
“General basic measures are early mobilisation, movement exercises and instruction in self-directed exercises. These should be applied regularly in all patients.”
S3 guideline on VTE prophylaxis (AWMF 003-001), version 4.1, recommendation 3.1 · grade B · strong consensus 100 % (translated from the German original)
For patients at low VTE risk the guideline goes further: there, basic measures shall be applied regularly — at grade A (recommendation 6.2). For that group they are not the supplement but the measure.
What the evidence shows — and what it does not
The guideline draws on a meta-analysis of 7 studies with 1,774 surgical and non-surgical patients. Result: a reduction in deep vein thrombosis of RR 0.55 (95% CI 0.41–0.73), with high methodological certainty and high significance.
The subgroup analysis is the instructive part, because it yields something concrete for practice:
- Whole-body mobilisation: RR 0.54 (95% CI 0.38–0.78; p < 0.001) — clearly effective.
- Movement exercises away from the surgical or injury site: RR 0.25 (95% CI 0.07–0.86; p = 0.03) — the strongest single effect.
- Exercises at the surgical or injury site itself: RR 0.68 (95% CI 0.42–1.12) — no significant effect.
That is a practical pointer rarely stated this plainly: moving the unaffected side and the whole body pays off more than concentrating on the operated limb.
What is included
The guideline names early mobilisation, movement exercises under guidance and instruction in self-directed exercises; as an example of the latter it names ankle pumping. Adequate hydration is to be ensured alongside — a point often lost in the discussion about exercises.
Common in nursing practice alongside these are ankle circling, tensing and releasing the calf muscles, movement at the ankle joint and sitting up at the edge of the bed. They follow the same principle: activate the calf muscle pump and keep venous return going. Which exercises are appropriate in an individual case is decided by the treating professionals.
Where the limit lies
The guideline draws two limits explicitly.
First: basic and physical measures shall not replace an indicated pharmacological VTE prophylaxis (recommendation 7.2). Exercises are not an argument against anticoagulation.
Second: every one of these measures assumes the patient can take part. Under sedation, paresis, impaired consciousness or pronounced weakness, self-activation of the calf muscle pump is not available. This is what device-supported methods are for: intermittent pneumatic compression takes over the work of the muscle pump in the immobile patient. At moderate or high VTE risk with contraindications to pharmacological prophylaxis, physical measures shall be applied, preferably IPC — recommendation 7.3, grade A.
Who orders, who delivers
The indication is a medical decision; delivery sits with nursing and physiotherapy. There is no profession-owned nursing standard for thromboprophylaxis in Germany — why that is, and what to follow instead, is covered under Is there an expert standard on thromboprophylaxis?.
This article addresses medical professionals. It replaces neither a medical order nor individual advice.
Frequently asked questions
Which exercises belong to thromboprophylaxis?
The S3 guideline groups them as basic measures: early mobilisation, guided movement exercises and instruction in self-directed exercises — the guideline names ankle pumping as an example. Adequate hydration is to be ensured alongside.
Are movement exercises effective?
Yes. A meta-analysis of 7 studies with 1,774 patients, assessed by the guideline, shows a reduction in deep vein thrombosis of 45 per cent in relative terms (RR 0.55; 95% CI 0.41–0.73) with high methodological certainty.
Do exercises replace pharmacological prophylaxis?
No. The guideline states explicitly that basic and physical measures shall not replace an indicated pharmacological VTE prophylaxis (recommendation 7.2).
What if the patient cannot participate?
Then self-activation of the calf muscle pump is not available — precisely the situation device-supported methods are made for. At moderate or high VTE risk with contraindications to medication, physical measures shall be applied, preferably intermittent pneumatic compression (recommendation 7.3, grade A).