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Correlation of Echocardiographic Parameters in Prone and Supine Positions in Normal Adults Using a Novel Approach.
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  • Hesham Salah Taha,
  • Ahmed Mohamed,
  • Hossam Mahrous,
  • Osama Alsayed,
  • Mirna Shaker,
  • Hadeer Sayed,
  • Hussien Rizk,
  • Mohamed Abdelwahab
Hesham Salah Taha
Cairo University Kasr Alainy Faculty of Medicine
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Ahmed Mohamed
Cairo University Kasr Alainy Faculty of Medicine
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Hossam Mahrous
Cairo University Kasr Alainy Faculty of Medicine
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Osama Alsayed
Cairo University Kasr Alainy Faculty of Medicine
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Mirna Shaker
Cairo University Kasr Alainy Faculty of Medicine
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Hadeer Sayed
Cairo University Kasr Alainy Faculty of Medicine
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Hussien Rizk
Cairo University Kasr Alainy Faculty of Medicine
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Mohamed Abdelwahab
Cairo University Kasr Alainy Faculty of Medicine
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Abstract

Abstract Background: Transthoracic echocardiography (TTE) in prone position is challenging. Innovative use of transesophageal echocardiography (TEE) probe to perform TTE for such patients was described; but reproducibility and correlation of the TTE measurements by this technique with those obtained by the standard supine TTE study are still unknown. Methods: We enrolled 30 non-COVID-19 individuals, with a mean (SD) age 35 (10.9) years and 11 females, to study the agreement between the transthoracic measurements of the left ventricular (LV), left atrial (LA) and aortic dimensions obtained in prone position using an external TEE probe versus the standard supine position using the conventional TTE probe. Results: There were no significant differences between LV end-diastolic and end-systolic diameters, septal wall thickness, posterior wall thickness and aortic root dimensions in the prone versus the supine positions. While the mean ejection fraction (EF) (60.3% vs. 63.1%, P = 0.014) and mean LA dimensions (1.8 vs. 1.9 cm/m2, P < 0.001) were significantly lower in the prone position. The mean time of scans was significantly longer in the prone as compared to the supine (12.5 vs 4.5 minutes, P < 0.001). All supine studies had good quality while in the prone position 4 studies were of poor quality, and one was non-diagnostic. Conclusions: Assessment of cardiac dimensions and systolic function in the prone position using transthoracic TEE probe was feasible. LV and aortic dimensions agreed well with the standard TTE in supine position, however, LA dimensions and EF were lower in the prone position.

Peer review status:UNDER REVIEW

05 Aug 2020Submitted to Echocardiography
10 Aug 2020Submission Checks Completed
10 Aug 2020Assigned to Editor
12 Aug 2020Reviewer(s) Assigned
23 Aug 2020Review(s) Completed, Editorial Evaluation Pending
23 Aug 2020Editorial Decision: Revise Major
12 Sep 20201st Revision Received
14 Sep 2020Assigned to Editor
14 Sep 2020Submission Checks Completed
14 Sep 2020Reviewer(s) Assigned