title: A prominent 'A' notch in the pulmonary valve M mode-one more cause of the same.
abstract: The M mode echocardiogram is not the main priority, during routine echocardiographic evaluation now-a-days. However, there are still a few classical conditions where this remains instructive and educative. One such situation is the presence of an 'a' wave in the pulmonary valve M mode tracing in normals and it's absence in pulmonary hypertension. In valvular pulmonary stenosis we expect a deeper 'a' wave. We describe one more cause of a prominent 'a' wave in the pulmonary valve M mode. We describe this in a common tropical disease, endemic to Kerala.
authors.affiliation: Department of Cardiology, Medical College Hospital, Trivandrum, Kerala, India.
authors.forename: Prabha Nini
authors.initials: PN
authors.lastname: Gupta
authors.affiliation: Department of Cardiology, Medical College Hospital, Trivandrum, Kerala, India.
authors.forename: Praveen
authors.initials: P
authors.lastname: Velappan
authors.affiliation: Department of Cardiology, Medical College Hospital, Trivandrum, Kerala, India.
authors.forename: Lakshmi
authors.initials: L
authors.lastname: Thampy M S
authors.affiliation: Department of Cardiology, Medical College Hospital, Trivandrum, Kerala, India.
authors.forename: Subair M
authors.initials: SM
authors.lastname: Kunju
mesh_terms: D015150:Echocardiography, Doppler; D004562:Electrocardiography; D004719:Endomyocardial Fibrosis / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008875:Middle Aged; D011664:Pulmonary Valve / Q000000981:diagnostic imaging*; D013614:Tachycardia, Paroxysmal / Q000000981:diagnostic imaging
references.citation: Heart. 2009 Jan;95(1):9-14
references.pmid: 18782795
references.citation: Cardiol J. 2009;16(3):273-5
references.pmid: 19437405
references.citation: Circulation. 2012 Jan 31;125(4):e296-7
references.pmid: 22294710
references.citation: Eur Respir Rev. 2012 Sep 1;21(125):239-48
references.pmid: 22941889
references.citation: Br Heart J. 1989 Dec;62(6):450-4
references.pmid: 2605058
references.citation: Heart Asia. 2011 Jan 01;3(1):120-3
references.pmid: 27326008
references.citation: Heart Asia. 2013 May 21;5(1):71-3
references.pmid: 27326082
references.citation: Med J Malaysia. 1986 Sep;41(3):198-204
references.pmid: 3670135
references.citation: Circulation. 1974 Sep;50(3):575-81
references.pmid: 4412894
references.citation: Br Heart J. 1979 Aug;42(2):147-61
references.pmid: 486275
references.citation: Clin Cardiol. 1984 Mar;7(3):148-56
references.pmid: 6705299
references.citation: Circulation. 1978 Dec;58(6):1064-71
references.pmid: 709762
references.citation: Br Heart J. 1982 Sep;48(3):222-8
references.pmid: 7104113
references.citation: Circulation. 1981 Jul;64(1):107-12
references.pmid: 7237706
references.citation: Br Heart J. 1981 Oct;46(4):363-8
references.pmid: 7295431
references.citation: Jpn Heart J. 1977 May;18(3):298-311
references.pmid: 881745