Normal pulse pressure is around 40mmHg in a sitting position. Narrow or low pulse
pressure is defined as under 30mmHg. Your pulse
pressure is 20 to 26mmHg.
Causes of narrow or low pulse pressure include shock, tachycardia, left ventricular dysfunction, hypovolemia, mitral stenosis, severe pulmonary stenosis, severe aortic stenosis, constrictive pericarditis, pericardial effusion, ascites, cardiac tamponade, congestive heart failure, anaphylaxis.