<prompt> Kussmauls sign is classically seen inInfective endocarditisMalignant hypertensionConstrictive pericarditisPatent ductus arteriosus  <response>: Normally, the venous pressure should fall by at least 3 mmHg with inspiration. Kussmauls sign is defined by either a rise or a lack of fall of the JVP with inspiration and is classically associated with constrictive pericarditis, although it has been reported in patients with restrictive cardiomyopathy, massive pulmonary embolism, right ventricular infarction and advanced left ventricular systolic heart failure. 