Heart Test Laboratories, Inc. d/b/a HeartSciences (NASDAQ: HSCS; HSCSW) (“HeartSciences” or the “Company”), an artificial intelligence (AI)-powered medical technology company focused on transforming ECGs/EKGs to save lives through earlier detection of heart disease, today announced the podium presentation of a study utilizing its MyoVista® wavECG device at the 18th World Congress of Anesthesiologists in Singapore.

Preoperative left ventricular diastolic dysfunction (LVDD) is very common and one of the important causes of perioperative morbidity and mortality in cardiac and non-cardiac surgeries. In the study, patients undergoing preoperative anesthesia evaluation for cardiac and non-cardiac surgeries were enrolled. For patients indicated for preoperative echocardiography, LVDD was diagnosed and graded as per American Society of Echocardiography (ASE) guidelines and a MyoVista wavECG was also performed.

The author of the study stated in his presentation, “In our cohort of mixed surgical population, the MyoVista wavECG was useful as a screening tool with 100% sensitivity. Based on these findings, 25 of the 60 non-LVDD patients could be safely excluded from referral to preoperative echocardiography. Also, MyoVista wavECG can raise red flag for more detailed examination by expert cardiologists when findings are positive.” The author concluded, “The use of MyoVista wavECG for screening preoperative patients for LVDD to reduce the burden of referrals to preoperative echocardiography may be feasible and should be investigated further.”

“Once again, MyoVista wavECG has demonstrated significant potential value for screening in a large, at-risk patient population. The presentation of this study using the MyoVista to the World Congress of Anesthesiologists comes on the back of a recent publication assessing the use of MyoVista for identifying heart disease in diabetic patients1, which demonstrated MyoVista significantly outperformed existing standards of care,” said Andrew Simpson, Chief Executive Officer of HeartSciences. “AI-ECG and MyoVista provide the opportunity to screen for heart disease and transform cardiovascular medicine. We look forward to making the MyoVista device commercially available in the short term and also bringing to market a range of AI-ECG algorithms via a hardware agnostic platform. In combination, this will allow HeartSciences to provide AI-ECG solutions in any care environment worldwide.”

1 - Use of the energy waveform electrocardiogram to detect subclinical left ventricular dysfunction in patients with type 2 diabetes mellitus Cheng Hwee Soh1,2, Alex G. C. de Sá2,3,4,5, Elizabeth Potter1, Amera Halabi1, David B. Ascher2,3,4,5 and Thomas H. Marwick1,2,6*

About HeartSciences

Heart Test Laboratories, Inc. d/b/a HeartSciences is a medical technology company focused on applying innovative AI-based technology to an ECG (also known as an EKG) to expand and improve an ECG's clinical utility. Millions of ECGs are performed every week and the Company's objective is to improve healthcare by making it a far more valuable cardiac screening tool, particularly in frontline or point-of-care clinical settings. HeartSciences has one of the largest libraries of AI-ECG algorithms and intends to provide these AI-ECG algorithms on a device agnostic cloud-based solution as well as a low-cost ECG hardware platform. Working with clinical experts, HeartSciences ensures that all solutions are designed to work within existing clinical care pathways, making it easier for clinicians to use AI-ECG technology to improve their patient's care and lead to better outcomes. HeartSciences' first product candidate for FDA clearance, the MyoVista® wavECG™, or the MyoVista®, is a resting 12-lead ECG that is also designed to provide diagnostic information related to cardiac dysfunction which has traditionally only been available through the use of cardiac imaging. The MyoVista® also provides conventional ECG information in the same test.

For more information, please visit: https://www.heartsciences.com. X: @HeartSciences

Safe Harbor Statement

This announcement contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements are made under the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995 and are relating to the Company's future financial and operating performance. All statements, other than statements of historical facts, included herein are "forward-looking statements" including, among other things, statements about HeartSciences' beliefs and expectations. These statements are based on current expectations, assumptions and uncertainties involving judgments about, among other things, future economic, competitive and market conditions and future business decisions, all of which are difficult or impossible to predict accurately and many of which are beyond the Company's control. The expectations reflected in these forward-looking statements involve significant assumptions, risks and uncertainties, and these expectations may prove to be incorrect. Investors should not place undue reliance on these forward-looking statements, which speak only as of the date of this press release. Potential risks and uncertainties include, but are not limited to, risks discussed in HeartSciences' Annual Report on Form 10-K for the fiscal year ended April 30, 2023, filed with the U.S. Securities and Exchange Commission (the "SEC") on July 18, 2023, HeartSciences' Quarterly Report on Form 10-Q for the fiscal quarter ended July 31, 2023, filed with the SEC on September 14, 2023, HeartSciences' Quarterly Report on Form 10-Q for the fiscal quarter ended January 31, 2024, filed with the SEC on March 14, 2024, and in HeartSciences' other filings with the SEC at www.sec.gov. Other than as required under the securities laws, the Company does not assume a duty to update these forward-looking statements.


HeartSciences Gene Gephart +1-682-244-2578 (US) info@heartsciences.com

Investors Gilmartin Group Vivian Cervantes investorrelations@heartsciences.com

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