Here are some articles. Do you have access to PubMed? Can you get at least the abstract of these articles? Where it says doi:with numbers following like this, doi: 10.1097/ACO.0000000000000270, copy that in your search engine. It will take you to the abstracts. Good luck.

Systolic heart failure: diagnosis and therapy. Henes J, Rosenberger P. Curr Opin Anaesthesiol. 2016 Feb;29(1):55-60. doi: 10.1097/ACO.0000000000000270. PMID: 26545143 Review. PURPOSE OF REVIEW: The present review highlights recent findings on perioperative systolic heart failure. It briefly summarizes the pathophysiology of heart failure and provides the reader with new insight in diagnosis and treatment of systol … 2

Clinical practice. Systolic heart failure. McMurray JJ. N Engl J Med. 2010 Jan 21;362(3):228-38. doi: 10.1056/NEJMcp0909392. PMID: 20089973 Review. No abstract available. 3

Genetics and genomics of dilated cardiomyopathy and systolic heart failure. Tayal U, Prasad S, Cook SA. Genome Med. 2017 Feb 22;9(1):20. doi: 10.1186/s13073-017-0410-8. PMID: 28228157 Free PMC article. Review. One of the main causes of systolic heart failure is dilated cardiomyopathy (DCM), the leading global indication for heart transplantation. ...This has enabled rapid sequencing at scale, leading to the discovery of many novel rare variants in DCM and of … 4

Use of Inotropic Agents in Treatment of Systolic Heart Failure. Tariq S, Aronow WS. Int J Mol Sci. 2015 Dec 4;16(12):29060-8. doi: 10.3390/ijms161226147. PMID: 26690127 Free PMC article. Review. Inotropes can be used in patients with severe systolic heart failure awaiting heart transplant to maintain hemodynamic stability or as a bridge to decision. ...A detailed conversation with the patient and family shall be held, including a discussion on … 5

Systolic Heart Failure: An Update for Home Healthcare Clinicians. Capriotti T, Ashline B. Home Healthc Now. 2019 Nov/Dec;37(6):312-318. doi: 10.1097/NHH.0000000000000793. PMID: 31688465 Review. Heart failure (HF) is a significant public health problem that is projected to increase in prevalence in the next 20 years due to a growing aged population and improved survival after acute cardiac events. The American College of Cardiology (2019) defines HF as a co … 6

Pathophysiology of Chronic Systolic Heart Failure. A View from the Periphery. Katz SD. Ann Am Thorac Soc. 2018 Feb;15(Suppl 1):S38-S41. doi: 10.1513/AnnalsATS.201710-789KV. PMID: 29461891 Review. Heart failure is a common form of heart disease associated with progressive exercise intolerance and high risk of adverse clinical outcome events. ...Abnormal substrate use in skeletal muscle due to reduced skeletal muscle mass, change in skeletal muscle fibe …

I hope these links help you

https://www.webmd.com/heart-disease/heart-failure/what-is-systolic-heart-failure

https://www.healthline.com/health/heart-failure/systolic-vs-diastolic