title: Measurement of right atrial volume and diameters in healthy Nepalese with normal echocardiogram.
abstract: BACKGROUND
  The size of right atrium is expected to be different in diverse healthy ethnic groups. It is important to know the normal size of right atrium in our healthy population.
  
  
  OBJECTIVE
  The study aimed to find out the normal values of right atrial volume, right atrial short axis diameter and right atrial long axis diameter in healthy Nepalese population with normal echocardiographic findings. It also looked at correlations between right atrial dimensions and the right atrial volume.
  
  
  METHODS
  Verbal consent was taken from all the participants. One hundred participants between the age of 18 and 60 years with normal echocardiographic findings and without any chronic disease were included in this study. Right atrial volume was measured by using area length method. Right atrial short axis diameter and Right atrial long axis diameter were measured in the four chamber view.
  
  
  RESULTS
  The mean right atrial volume was 23.64±5.36 ml (range 11.30-40.00 ml).The range of right atrial short axis diameter and right atrial long axis diameter were 1.34-3.80 cm and 2.4-4.7 cm respectively.
  
  
  CONCLUSIONS
  The size of right atrium in the Nepalese population is smaller compared to western population. Male right atrial volume size is greater than female in Nepalese population similar to western population. The findings of normal value of right atrial volume and right atrial diameter in Nepalese population will help the physician to assess patients with various conditions affecting the right atrium.
authors.affiliation: Department of Internal Medicine, Kathmandu Medical College Teaching Hospital, Kathmandu, Nepal.
authors.forename: D B
authors.initials: DB
authors.lastname: Karki
authors.affiliation: Department of Internal Medicine, Kathmandu Medical College Teaching Hospital, Kathmandu, Nepal.
authors.forename: S
authors.initials: S
authors.lastname: Pant
authors.affiliation: Department of Internal Medicine, Kathmandu Medical College Teaching Hospital, Kathmandu, Nepal.
authors.forename: S K
authors.initials: SK
authors.lastname: Yadava
authors.affiliation: Department of Community Medicine, Kathmandu Medical College Teaching Hospital, Kathmandu, Nepal.
authors.forename: A
authors.initials: A
authors.lastname: Vaidya
authors.affiliation: Department of Internal Medicine, Kathmandu Medical College Teaching Hospital, Kathmandu, Nepal.
authors.forename: D K
authors.initials: DK
authors.lastname: Neupane
authors.affiliation: Department of Internal Medicine, Kathmandu Medical College Teaching Hospital, Kathmandu, Nepal.
authors.forename: S
authors.initials: S
authors.lastname: Joshi
mesh_terms: D000293:Adolescent; D000328:Adult; D003430:Cross-Sectional Studies; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006325:Heart Atria / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009390:Nepal; D012016:Reference Values; D055815:Young Adult