Most common conditions in dreams related to the hair symbol and their meanings Hair falling out in clumps. To dream that the hair is falling out in clumps have several meanings. First of all, the dream represents the state of your thoughts. Beautiful hair represents â positive thoughts and damaged hair â signifies negative thoughts.
Absent P waves on ECG: Introduction. Absent P waves on ECG: The absence of a P wave located on an electrocardiogram. See detailed information below for a list of 4 causes of Absent P waves on ECG, Symptom Checker, including diseases and drug side effect causes. Â» Review Causes of Absent P waves on ECG: Causes | Symptom Checker Â».
When left atrial enlargement occurs, it takes longer for cardiac action potentials to travel through the atrial myocardium; thus, the P wave also lengthens. Therefore, the criteria for diagnosing LAE on a 12-lead ECG is as follows: 1  The length of the P wave in lead II is greater than 120 milliseconds. OR. 2  The downward deflection of the P wave in lead V1 is greater than 40 milliseconds in length, with greater than 1 millimeter negative deflection (< -1 mm in amplitude)