Pulse, weak or absent

Alternative names:

absent pulse; weak pulse

Definition:

A weak or absent pulse. See also the information on CPR for more information about first-aid procedures.

Considerations:

An absent or weak pulse may be localized (affecting one limb) or systemic (affecting the whole body).

The absence of a pulse as determined by a lay person may not indicate disease. Sometimes the process of feeling the pulse (such as in the wrist) will diminish or obliterate a superficial pulse.

Common causes:

• improper technique used to feel for the pulse
• normally weak pulse that is difficult to measure without proper instruments
• shock
• cardiac arrest (lack of an effective heartbeat)

Note: There may be other causes of a weak or absent pulse. This list is not all inclusive, and the causes are not presented in order of likelihood. The causes of this symptom can include unlikely diseases and medications. Furthermore, the causes may vary based on age and gender of the affected person, as well as on the specific characteristics of the symptom such as location, quality, time course, aggravating factors, relieving factors, and associated complaints. Use the Symptom Analysis option to explore the possible explanations for a weak or absent pulse, occurring alone or in combination with other problems.