Recording and Trending Cardiovascular Observations
Learn how accurate recording and comparison of cardiovascular observations can help you recognise deterioration earlier and communicate meaningful changes clearly.
Cardiovascular deterioration may develop gradually
Changes in pulse, blood pressure, perfusion and symptoms may become more meaningful when viewed together over time.
One result
A single reading provides useful information but may not reveal the direction in which the patient's condition is moving.
Repeated observations
Comparing sequential observations can reveal gradual change that may otherwise be overlooked.
The whole patient
Numerical trends become more meaningful when connected with symptoms, appearance and clinical assessment.
Build a useful cardiovascular record
Rate and rhythm
Record pulse findings accurately according to local documentation requirements.
Accurate readings
Record blood pressure clearly and consider whether technique or patient position may affect interpretation.
Peripheral findings
Relevant skin temperature, colour and peripheral perfusion findings may add important context.
What the patient reports
Palpitations, dizziness, chest discomfort, breathlessness and weakness should be documented where relevant.
Neurological change
New confusion or reduced responsiveness can be important evidence of wider physiological deterioration.
Connect systems
Cardiovascular assessment should be considered alongside the wider NEWS2 and ABCDE picture.
Compare current findings with what came before
Check the current observation
Make sure the reading has been obtained using an appropriate and reliable technique.
Review previous results
Look at earlier observations rather than judging the current number in isolation.
Identify direction
Ask whether the values appear stable, improving or progressively changing.
Compare with baseline
Consider what is usual for this particular patient where that information is available.
Connect symptoms
Determine whether observation changes are occurring alongside new or worsening clinical symptoms.
Escalate meaningful change
Communicate deteriorating trends according to NEWS2, local policy and the patient's clinical condition.
Several small changes can become one important pattern
| Trend | Possible significance | What to do |
|---|---|---|
| Pulse progressively increasing | May become more concerning when combined with symptoms or other deterioration. | Assess the patient and connect with wider observations. |
| Blood pressure progressively falling | May indicate changing circulation, especially with symptoms or poor perfusion. | Repeat appropriately, assess within ABCDE and escalate concern. |
| Increasing pulse with falling BP | A combination that may increase concern about cardiovascular deterioration. | Look for symptoms, perfusion changes and wider deterioration. |
| New rhythm irregularity | May indicate a new rhythm change requiring further assessment. | Assess symptoms and report the new finding. |
| Worsening peripheral perfusion | May support concern when occurring with cardiovascular changes. | Connect with pulse, BP, consciousness and ABCDE. |
| Stable numbers but worsening symptoms | Clinical deterioration can occur before a dramatic numerical change. | Assess and escalate based on the whole patient. |
A trend is only useful if the observations are reliable
Measure consistently
Poor technique can create apparent changes that do not reflect the patient's true physiological condition.
Use appropriate equipment
Correct equipment selection and placement help improve measurement reliability.
Question unexpected results
If a reading is unexpected, reassess appropriately while also checking the patient's condition.
Cardiovascular trends belong inside the wider assessment
Airway
Respond immediately to airway compromise according to local emergency procedures.
Breathing
Compare respiratory observations and look for new breathlessness or increasing respiratory effort.
Circulation
Review pulse, blood pressure, perfusion, symptoms and relevant cardiovascular trends.
Disability
Identify new confusion, dizziness, syncope or reduced responsiveness.
Exposure
Look for bleeding, oedema and other relevant physical findings while maintaining dignity.
Escalate
Use local escalation pathways when trends or clinical findings indicate deterioration.
Trends that should attract attention
- Progressively falling blood pressure with worsening symptoms.
- Increasing pulse rate with evidence of deteriorating circulation.
- New irregular pulse associated with chest symptoms or dizziness.
- Worsening perfusion alongside changing cardiovascular observations.
- Cardiovascular trends accompanied by syncope or near-syncope.
- New confusion or reduced responsiveness with circulatory deterioration.
- Multiple observations moving in a concerning direction.
- Any trend associated with a patient who appears acutely unwell.
The individual observations do not look dramatic — but the trend does
Example
A patient's pulse has increased across three sets of observations while their blood pressure has gradually fallen.
The patient now reports feeling weaker and slightly dizzy when sitting upright. Their hands also feel cooler than earlier.
No single observation tells the whole story. Together you recognise increasing pulse + falling blood pressure + symptoms + changing perfusion.
You complete an appropriate ABCDE assessment and communicate the deteriorating trend promptly.
Tell colleagues what has changed over time
Example escalation
“I'm concerned about Mrs Khan's cardiovascular trend. Over the last three sets of observations her pulse has progressively increased and her blood pressure has fallen. She is now dizzy and her hands feel cooler than earlier.”
This is more informative than simply reporting the most recent pulse and blood pressure values.
Make your records useful to the next clinician
- Record observations accurately and promptly.
- Use the correct location within the patient's clinical record.
- Document relevant symptoms alongside abnormal observations.
- Record meaningful changes from baseline.
- Document relevant repeated or verified observations.
- Record escalation and who was informed according to local policy.
- Document subsequent action or reassessment where appropriate.
Trending errors to avoid
- Looking only at the most recent observation.
- Ignoring the patient's normal baseline.
- Recording numbers without associated symptoms or context.
- Assuming one normal observation rules out deterioration.
- Missing gradual change because each value is viewed separately.
- Using unreliable measurement technique.
- Repeatedly rechecking observations while delaying escalation.
- Failing to document that concerns have been escalated.
Measure → compare → connect → escalate
Get reliable observations
Use appropriate technique and record findings accurately.
Look for direction
Compare with previous results and baseline, then connect trends with symptoms and clinical findings.
Escalate the trend
Explain how observations have changed over time and why the overall pattern is concerning.
A trend can reveal deterioration before one dramatic result appears
Record accurately, compare observations over time, connect the numbers with the patient and escalate meaningful change early.
Explore Clinical Confidence →