<prompt> Water hammer pulse is seen in-Aoic stenosisAoic regurgitationAoic stenosis and Aoic regurgitationMitral regurgitation  <response>: Answer is B Aoic Regurgitation : The Water hammer pulse or Corrigans pulse is characterized by an abrupt and rapid carotid upstroke with a rapid fall off collapsing pulse. It is characteristic of Aoic Regurgitation. 