EX-4.7: FIRST SUPPLEMENTAL INDENTURE

Exhibit 4.7

TRIAD HOSPITALS, INC.

AND

THE BANK OF NEW YORK TRUST COMPANY, N.A.,
as successor Trustee to Citibank, N.A.

FIRST SUPPLEMENTAL INDENTURE

Dated as of July 24, 2007

to

Indenture

Dated as of November 12, 2003

7% SENIOR SUBORDINATED NOTES DUE 2013

     THIS FIRST SUPPLEMENTAL INDENTURE, dated as of July 24, 2007 (this “Supplemental Indenture”), is by and between Triad Hospitals, Inc., a Delaware corporation (the “Issuer”) and The Bank of New York Trust Company, N.A., successor to Citibank, N.A., as trustee (the “Trustee”).

     WHEREAS, the Issuer and the Trustee have entered into that certain Indenture dated as of November 12, 2003 (the “Indenture”), providing for the issuance of 7% Senior Subordinated Notes due 2013 (the “Notes”);

     WHEREAS, there are currently $600,000,000 aggregate principal amount of Notes outstanding;

     WHEREAS, Section 9.2 of the Indenture provides that the Indenture may be amended with the consent of the Holders of at least a majority in aggregate principal amount of the Notes then outstanding, voting as a single class (including, without limitation, consents obtained in connection with a tender offer or exchange offer for, or purchase of, Notes) (subject to certain exceptions);

     WHEREAS, the Issuer desires and has requested the Trustee to join with it in entering into this Supplemental Indenture for the purpose of amending the Indenture in certain respects as permitted by Section 9.2 of the Indenture;

     WHEREAS, the execution and delivery of this Supplemental Indenture has been authorized by the Board of Directors of the Issuer;

     WHEREAS, (1) the Issuer has received the consent of the Holders of at least a majority in aggregate principal amount of the outstanding Notes and has satisfied all other conditions precedent, if any, provided under the Indenture to enable the Issuer and the Trustee to enter into this Supplemental Indenture, all as certified by an Officers’ Certificate, delivered to the Trustee simultaneously with the execution and delivery of this Supplemental Indenture as contemplated by Sections 9.2 of the Indenture, and (2) the Issuer has delivered to the Trustee simultaneously with the execution and delivery of this Supplemental Indenture any document requested by the Trustee relating to this Supplemental Indenture as contemplated by Section 9.2 of the Indenture; and

     NOW, THEREFORE, in consideration of the above premises, each party hereby agrees, for the benefit of the others and for the equal and ratable benefit of the Holders of the Notes, as follows:

ARTICLE I

DEFINITIONS

     Section 1.1 Deletion of Definitions and Related References. Section 1.1 of the Indenture is hereby amended to delete in their entirety all terms and their respective definitions for which all references are eliminated in the Indenture as a result of the amendments set forth in Article II of this Supplemental Indenture.

ARTICLE II

AMENDMENTS TO INDENTURE

     Section 2.1 Deletions from the Indenture. The Indenture is hereby amended by deleting the following sections of the Indenture and all references thereto in the Indenture in their entirety:

• Section 4.2 (Maintenance of Office or Agency)

• Section 4.7 (Limitation on Restricted Payments)

• Section 4.8 (Limitation on Dividends and Other Payment Restrictions Affecting Restricted Subsidiaries)

• Section 4.9 (Limitation on Indebtedness)

• Section 4.10 (Limitation on Sale of Assets)

• Section 4.11 (Limitation on Transactions with Affiliates)

• Section 4.12 (Limitation on Liens)

• Section 4.13 (Limitation on Other Senior Subordinated Indebtedness)

• Section 4.14 (Corporate Existence)

• Section 4.16 (Suspended Covenants)

• Section 4.17 (Limitation on Issuances and Sales of Capital Stock of Restricted Subsidiaries)

• Section 4.18 (Limitation on Guarantees of Indebtedness by Restricted Subsidiaries)

• Section 5.1 (Consolidation, Merger and Sale of Assets)

• Section 6.1(d) (failure to observe or perform other covenants in the Indenture )

• Section 6.1(e) (failure to pay certain indebtedness)

• Section 6.1(f) (failure to pay certain judgments)

• Section 6.1(g) (defaults related to certain bankruptcy events)

• Section 6.1(h) (defaults relating to certain other bankruptcy events)

• Section 8.4(b) (delivery of certificate of accountant with respect to Legal Defeasance and tax matters)

• Section 8.4(c) (delivery of Opinion of Counsel with respect to Legal Defeasance and certain other tax matters)

• Section 8.4(f) (delivery of certificate of accountant with respect to Legal Defeasance and certain bankruptcy matters)

• Section 8.4(g) (delivery of Officers’ Certificate with respect to Legal Defeasance and creditors’ rights)

• Section 8.7 (reinstatement of obligations under the Indenture)

     Section 2.2 Modifications to the Indenture. The Indenture is hereby amended by deleting the following sections of the Indenture in their entirety and replacing them with the following:

(a)

Section 4.3. Reports.

     The Company shall comply with Section 314(a) of the Trust Indenture Act of 1939, as amended, and the rules and regulations promulgated thereunder (the “TIA”).

(b)

Section 4.4. Compliance Certificate.

     The Company shall deliver to the Trustee, within 90 days after the end of each fiscal year, an Officers’ Certificate in accordance with Section 314(a)(4) of the TIA.

(c)

Section 5.2. Successor Person Substituted.

     Upon any consolidation or merger, or any sale, assignment, transfer, conveyance or other disposition of all or substantially all of the assets of the Company, the predecessor Company shall be relieved from all obligations to pay the principal of and interest, if any, on the Notes, and the successor corporation formed by such consolidation or into or with which the Company is merged or to which such sale, assignment, transfer, conveyance or other disposition is made shall succeed to, and be substituted for (so that from and after the date of such consolidation, merger, sale, conveyance or other disposition, the provisions of this Indenture referring to the “Company” shall refer instead to the successor corporation and not to the Company), and may exercise every right and power of the Company under this Indenture with the same effect as if such successor Person had been named as the Company herein.

ARTICLE III

MISCELLANEOUS PROVISIONS

     Section 3.1 Ratification of Indenture; Supplemental Indenture Part of Indenture. Except as expressly amended hereby, the Indenture, as amended and supplemented, is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of Notes heretofore or hereafter authenticated and delivered shall be bound hereby. In the case of conflict between the Indenture and this Supplemental Indenture, the provisions of this Supplemental Indenture shall control.

     Section 3.2 Severability. In case any provision in this Supplemental Indenture or in the Notes shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

     Section 3.3 Capitalized Terms. Capitalized terms used herein but not defined shall have the meanings assigned to them in the Indenture.

     Section 3.4 Effect of Headings. The Article and Section headings used herein are for convenience only and shall not affect the construction of this Supplemental Indenture.

     Section 3.5 The Trustee. The Trustee shall not be responsible for any statement or recital in this Supplemental Indenture.

     Section 3.6 Certain Duties and Responsibilities of the Trustee. In entering into this Supplemental Indenture, the Trustee shall be entitled to the benefit of every provision of the Indenture relating to the conduct or affecting the liability or affording protection to the Trustee, whether or not elsewhere herein so provided.

     Section 3.7 NEW YORK LAW TO GOVERN. THE INTERNAL LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE BUT WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.

     Section 3.8 Counterparts. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent one and the same agreement.

     Section 3.9 Successors. All agreements of the Issuer in this Supplemental Indenture and the Notes shall bind its successors. All agreements of the Trustee in this Supplemental Indenture shall bind its successors.

     Section 3.10 Effectiveness. The provisions of Articles I and II of this Supplemental Indenture shall be effective at the time all conditions to the tender offer and consent solicitation as set forth in the Offer to Purchase and Consent Solicitation Statement (as it may be amended or supplemented from time to time) of the Issuer dated May 31, 2007 have been satisfied or waived by the Issuer, the Issuer accepts for purchase at least a majority in aggregate principal amount of the outstanding Notes issued under the Indenture and this Supplemental Indenture has been executed by the Issuer.

     Section 3.11 Endorsement and Change of Form of Notes. Any Notes authenticated and delivered after the close of business on the date that this Supplemental Indenture becomes effective may be affixed to, stamped, imprinted or otherwise legended by the Trustee, with a notation as follows:

     “Effective as of July 25, 2007, the restrictive covenants of the Issuer and certain of the Events of Default have been eliminated, as provided in the Supplemental Indenture, dated as of July 24, 2007. Reference is hereby made to such Supplemental Indenture, copies of which are on file with the Trustee, for a description of the amendments made therein.”

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     IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed as of the day and year written above.