The normal P wave is inveed in lead :
Correct Answer: aVR
Description: Answer is D (aVR) The normal P wave is negative (inveed) in lead aVR. Characteristics of a Normal P Wave P wave results from spread of electrical activity through the atria (Atrial Depolarization) A normal p wave indicates that the electrical impulse responsible for the p wave originated in the sinus node and the normal depolarization of the right and left atria has occurred Normal P Wave is rounded, neither peaked nor notched. Width or duration of the P wave in time is 0.10 seconds or 2.5 small squares Height of the P wave is 2.5 mm (2.5 small squares) Sinus P waves are best seen in Lead II and V1 P wave is upright in most leads, mainly L1 L11 and aVF P Wave is inveed in aVR (and occasionally in aVL) P wave in VI may be biphasic with equal upward and downward deflection, notched and wide. Activation of right atrium produces positive component and activation of left atrium produces negative component. There should be one p wave preceding each QRS complex. More than one p wave before a QRS complex indicates a conduction disturbance.
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