19 YO Suresh (son of a tailor & studying at Lyola Hospital, Chennai), suffering from Atrial Septal Defect, visited Dr. Lal in September 1992. Dr Lal performed a non-surgical closure of hole – ASD using monodisk (a device of nylon mesh),
which was the Ist time in the World.

World’s Ist case of ASD Closure without surgery by using Umbrella Device, was performed in 1975 on 17 YO girl in
Luoisiana, USA by The King-Mills. Post that, many types of devices have been used during such procedures. The heart
hole closure (ASD) performed on Suresh was done by using Monodisk Device, happens to be Ist case of the World.

PUBLICATION

Paper Presented and published in Indian Heart Journal (Ist Scienttic Paper of The Country on the ASD Closure without Surgery).

• Lal P. et al. Monodisk — A new Atrial Septal Defect Occlusion device, one yearFollowup. Indian Heart Journal; 1993 : 306: 387 (A).
• P Lal, PT Upasani, P Jain : First Clinical Experience with Transcatheter ASD Closure Using Monodisc Device : Immediate and Long
  -Term Results (abstract) Ind Heart J. 48:476, 1996
• PLal, PT Upasani : First Clinical Experience with Transcatheter ASD Closure using Monodisc Device : Immediate and Long -Term
  Results (abstract) J. Intern Cardiol, Volume 11, Issue Supplement S5-S136, 1998.
• P Lal, PT Upasani : Percutaneous Therapy for Secundum ASD and Valvular Pulmonic Stenosis (abstract) J Inter Cardiol Volume 11,
  Issue Supplement S5-S136, 19998
• P.Lal, PT Upasani : Transcatheter Atrial Septal Defect Closure with Various Devices A Comparative Study Ind. Heart J 50:611, 1998.