Exhibit 3.193

SOUTHWEST AMBULANCE OF NEW MEXICO, INC.

BYLAWS

ARTICLE I

OFFICES

Section 1. The registered office shall be located in the City of Santa Fe, New Mexico.

Section 2. The corporation may also have offices at such other places both within and without the State of New Mexico as the board of directors may from time to time determine or the business of the corporation may require.

ARTICLE II

ANNUAL MEETINGS OF SHAREHOLDERS

Section 1. All meetings of shareholders for the election of directors shall be held at such place either within or without the State of New Mexico as shall be designated from time to time by the board of directors and stated in the notice of the meeting.

Section 2. Annual meetings of the shareholders shall be held on such date and at such time as shall be designated from time to time by the board of directors and stated in the notice of the meeting. At the annual meeting, shareholders shall elect by a plurality vote a board of directors, and transact such other business as may properly be brought before the meeting.

Section 3. Written or printed notice of the annual meeting stating the place, day and hour of the meeting shall be delivered not less than ten nor more than fifty days before the date of the meeting, either personally or by mail, by or at the direction of the president, the secretary, or the officer or persons calling the meeting, to each shareholder of record entitled to vote at such meeting.

ARTICLE III

MEETINGS OF SHAREHOLDERS

Section 1. Special meetings of shareholders for any purpose other than the election of directors may be held at such time and place within or without the State of New Mexico as shall be stated in the notice of the meeting or in a duly executed waiver of notice thereof.

Section 2. Special meetings of the shareholders, for any purpose or purposes, unless otherwise prescribed by statute or by the articles of incorporation, may be called by the president, the board of directors, or the holders of not less than one-tenth of all the shares entitled to vote at the meeting.

Section 3. Written or printed notice of a special meeting stating the place, day and hour of the meeting and the purpose or purposes for which the meeting is called, shall be delivered not less than ten nor more than fifty days before the date of the meeting, either personally or by mail, by or at the direction of the president, the secretary, or the officer or persons calling the meeting, to each shareholder of record entitled to vote at such meeting.

Section 4. The business transacted at any special meeting of shareholders shall be limited to the purposes stated in the notice.

Section 5. Any action required or permitted to be taken at a meeting of the shareholders may be taken without a meeting if a consent in writing, setting forth the action so taken, shall be signed by all of the shareholders entitled to vote with respect to the subject matter thereof.

ARTICLE IV

QUORUM AND VOTING OF STOCK

Section 1. The holders of a majority of the shares of stock issued and outstanding and entitled to vote, represented in person or by proxy, shall constitute a quorum at all meetings of the shareholders for the transaction of business except as otherwise provided by statute or by the articles of incorporation. If, however, such quorum shall not be present or represented at any meeting of the shareholders, the shareholders present in person or represented by proxy shall have power to adjourn the meeting from time to time, without notice other than announcement at the meeting, until a quorum shall be present or represented. At such adjourned meeting at which a quorum shall be present or represented any business may be transacted which might have been transacted at the meeting as originally notified.

Section 2. If a quorum is present, the affirmative vote of a majority of the shares of stock represented at the meeting shall be the act of the shareholders unless the vote of a greater number of shares of stock is required by law or the articles of incorporation.

Section 3. Each outstanding share of stock, having voting power, shall be entitled to one vote on each matter submitted to a vote at a meeting of shareholders. A shareholder may vote either in person or by proxy executed in writing by the shareholder or by his duly authorized attorney-in-fact.

In all elections for directors every shareholder entitled to vote shall have the right to vote, in person or by proxy, the number of shares of stock owned by him, for as many persons as there are directors to be elected, or to cumulate the vote of said shares, and give one candidate as many votes as the number of directors multiplied by the number of his shares of stock shall equal, or to distribute the votes on the same principle among as many candidates as he may see fit.

Section 4. Any action required to be taken at a meeting of the shareholders may be taken without a meeting if a consent in writing, setting forth the action so taken, shall be signed by all of the shareholders entitled to vote with respect to the subject matter thereof.

ARTICLE V

DIRECTORS

Section 1. The number of directors shall be not less than two (2) and no more than five (5). Directors need not be residents of the State of New Mexico nor shareholders of the corporation. The directors, other than the first board of directors, shall be elected at the annual meeting of the shareholders, and each director elected shall serve until the next succeeding annual meeting and until his successor shall have been elected and qualified. The first board of directors shall hold office until the first annual meeting of shareholders.

Section 2. Any vacancy occurring in the board of directors may be filled by the affirmative vote of a majority of the remaining directors though less than a quorum of the board of directors. A director elected to fill a vacancy shall be elected for the unexpired portion of the term of his predecessor in office. Any directorship to be filled by reason of an increase in the number of directors may be filled by the affirmative vote of a majority of the directors present at a meeting at which a quorum is present. A director elected to fill a newly created directorship shall serve until the next succeeding annual meeting of shareholders.

Section 3. The business affairs of the corporation shall be managed by its board of directors which may exercise all such powers of the corporation and do all such lawful acts and things as are not by statute or by the articles of incorporation or by these bylaws directed or required to be exercised or done by the shareholders.

Section 4. The directors may keep the books of the corporation, except such as are required by law to be kept within the state, outside of the State of New Mexico, at such place or places as they may from time to time determine.

Section 5. The board of directors, by the affirmative vote of a majority of the directors then in office, and irrespective of any personal interest of any of its members, shall have authority to establish reasonable compensation of all directors for services to the corporation as directors, officers or otherwise.

ARTICLE VI

MEETINGS OF THE BOARD OF DIRECTORS

Section 1. Meetings of the board of directors, regular or special, may be held either within or without the State of New Mexico.

Section 2. The first meeting of each newly elected board of directors shall be held at such time and place as shall be fixed by the vote of the shareholders at the annual meeting and no notice of such meeting shall be necessary to the newly elected directors in order legally to constitute the meeting, provided a quorum shall be present, or it may convene at such place and time as shall be fixed by the consent in writing of all the directors.

Section 3. Regular meetings of the board of directors may be held upon such notice, or without notice, and at such time and at such place as shall from time to time be determined by the board.

Section 4. Special meetings of the board of directors may be called by the chairman, president or the secretary or any member of the Board to each director, either personally, by telegram, facsimile transmission, by telephone, by mail or at least twenty-four (24) hours (in the case of notice in person, by telegram, facsimile transmission, or by telephone) or forty-eight (48) hours (in case of notice by mail) before the time at which the meeting is to be held.

Section 5. Attendance of a director at any meeting shall constitute a waiver of notice of such meeting, except where a director attends for the express purpose of objecting to the transaction of any business because the meeting is not lawfully called or convened. Neither the business to be transacted at, nor the purpose of, any regular or special meeting of the board of directors need be specified in the notice or waiver of notice of such meeting.

Section 6. A majority of the membership of the board of directors shall constitute a quorum and the concurrence of a majority of those present shall be sufficient to conduct the business of the Board, unless a greater number is required by law or by the articles of incorporation. The act of a majority of the directors present at any meeting at which a quorum is present shall be the act of the board of directors, unless the act of a greater number is required by statute or by the articles of incorporation. If a quorum shall not be present at any meeting of directors, the directors present thereat may adjourn the meeting from time to time, without notice other than announcement at the meeting, until a quorum shall be present.

Section 7. Any action required or permitted to be taken at a meeting of the directors may be taken without a meeting if a consent in writing, setting forth the action so taken, shall be signed by all of the directors entitled to vote with respect to the subject matter thereof.

Section 8. Unless otherwise restricted by the articles of incorporation or these bylaws, members of the board of directors, or any committee designated by the board of directors, may participate in a meeting of the board of directors, or any committee, by means of conference telephone or similar communications equipment whereby all persons participating in the meeting can hear each other, and participation in a meeting in this manner shall constitute presence in person at the meeting.

ARTICLE VII

EXECUTIVE COMMITTEE

Section 1. The board of directors, by resolution adopted by a majority of the full board of directors may designate two or more directors to constitute an executive committee, which committee, to the extent provided in such resolution, shall have and exercise all of the authority of the board of directors in the management of the corporation, except as otherwise required by law. Vacancies in the membership of the committee shall be filled by the board of directors at a regular or special meeting of the board of directors. The executive committee shall keep regular minutes of its proceedings and report the same to the board when required.

ARTICLE VIII

NOTICES

Section 1. Whenever, under the provisions of the statutes or of the articles of incorporation or of these bylaws, notice is required to be given to any director or shareholder, it shall not be construed to mean personal notice, but such notice may be given in writing, by mail, addressed to such director or shareholder, at his address as it appears on the records of the corporation, with postage thereon prepaid, and such notice shall be deemed to be given at the time when the same shall be deposited in the United States mail. Notice to directors may also be given by telegram.

Section 2. Whenever any notice whatever is required to be given under the provisions of the statutes or under the provisions of the articles of incorporation or these bylaws, a waiver thereof in writing signed by the person or persons entitled to such notice, whether before or after the time stated therein, shall be deemed equivalent to the giving of such notice.

ARTICLE IX

OFFICERS

Section 1. The officers of the corporation shall be chosen by the board of directors and shall be a president, a vice-president, a secretary and a treasurer. The board of directors may also choose a chairman of the board, chief executive officer, additional vice-presidents, and one or more assistant secretaries and assistant treasurers. Any two or more offices may be held by the same person.

Section 2. The board of directors at its first meeting after each annual meeting of shareholders shall choose a president, one or more vice-presidents, a secretary and a treasurer, none of whom need be a member of the board.

Section 3. The board of directors may appoint such other officers and agents as it shall deem necessary who shall hold their offices for such terms and shall exercise such powers and perform such duties as shall be determined from time to time by the board of directors.

Section 4. The salaries of all officers and agents of the corporation shall be fixed by the board of directors.

Section 5. The officers of the corporation shall hold office until their successors are chosen and qualify. Any officer elected or appointed by the board of directors may be removed at any time by the affirmative vote of a majority of the board of directors. Any vacancy occurring in any office of the corporation shall be filled by the board of directors.

THE PRESIDENT AND CHIEF EXECUTIVE OFFICER

Section 6. The president shall be the chief executive officer of the corporation, shall preside at all meetings of the shareholders and the board of directors, shall have general and active management of the business of the corporation and shall see that all orders and resolutions of the board of directors are carried into effect.

Section 7. The president shall execute bonds, mortgages and other contracts requiring a seal, under the seal of the corporation, except where required or permitted by law to be otherwise signed and executed and except where the signing and execution thereof shall be expressly delegated by the board of directors to some other officer or agent of the corporation.

THE CHAIRMAN OF THE BOARD

Section 8. The chairman of the board, if one shall have been appointed and be serving, shall preside at all meetings of the board of directors and all meetings of shareholders, and shall perform such other duties as from time to time may be assigned to him or her by the board of directors.

THE VICE-PRESIDENTS

Section 9. The vice-president, or if there shall be more than one, the vice-presidents in the order determined by the board of directors, shall, in the absence or disability of the president, perform the duties and exercise the powers of the president and shall perform such other duties and have such other powers as the board of directors may from time to time prescribe.

THE SECRETARY AND ASSISTANT SECRETARIES

Section 10. The secretary shall attend all meetings of the board of directors and all meetings of the shareholders and record all the proceedings of the meetings of the corporation and of the board of directors in a book to be kept for that purpose and shall perform like duties for the standing committees when required. He shall give, or cause to be given, notice of all meetings of the shareholders and special meetings of the board of directors, and shall perform such other duties as may be prescribed by the board of directors or president, under whose supervision he shall be. He shall have custody of the corporate seal of the corporation and he, or an assistant secretary, shall have authority to affix the same to any instrument requiring it and when so affixed, it may be attested by his signature or by the signature of such assistant secretary. The board of directors may give general authority to any other officer to affix the seal of the corporation and to attest the fixing by his signature.

Section 11. The assistant secretary, or if there be more than one, the assistant secretaries in the order determined by the board of directors, shall, in the absence or disability of the secretary, perform the duties and exercise the powers of the secretary and shall perform such other duties and have such other powers as the board of directors may from time to time prescribe.

THE TREASURER AND ASSISTANT TREASURERS

Section 12. The treasurer shall have the custody of the corporate funds and securities and shall keep full and accurate accounts of receipts and disbursements in books belonging to the corporation and shall deposit all moneys and other valuable effects in the name and to the credit of the corporation in such depositories as may be designated by the board of directors.

Section 13. The treasurer shall disburse the funds of the corporation as may be ordered by the board of directors, taking proper vouchers for such disbursements, and shall render to the president and the board of directors, at its regular meetings, or when the board of directors so requires, an account of all his transactions as treasurer and of the financial condition of the corporation.

Section 14. If required by the board of directors, the treasurer shall give the corporation a bond in such sum and with such surety or sureties as shall be satisfactory to the board of directors for the faithful performance of the duties of his office and for the restoration to the corporation, in case of his death, resignation, retirement or removal from office, of all books, papers, vouchers, money and other property of whatever kind in his possession or under his control belonging to the corporation.

Section 15. The assistant treasurer, or, if there shall be more than one, the assistant treasurers in the order determined by the board of directors, shall, in the absence or disability of the treasurer, perform the duties and exercise the powers of the treasurer and shall perform such other duties and have such other powers as the board of directors may from time to time prescribe.

ARTICLE X

CERTIFICATES FOR SHARES

Section 1. The shares of the corporation shall be represented by certificates or shall be uncertificated shares. Certificates shall be signed by the chairman or vice-chairman of the board of directors or the president or a vice-president and by the treasurer or an assistant treasurer, or the secretary, or an assistant secretary of the corporation, and may be sealed with the seal of the corporation or a facsimile thereof. When the corporation is authorized to issue shares of more than one class there shall be set forth upon the face or back of the certificate representing shares, or the certificate representing shares shall have a statement that the corporation will furnish to any shareholder upon request and without charge, a full statement of the designations, preferences, limitations, and relative rights of the shares of each class authorized to be issued and, if the corporation is authorized to issue any preferred or special class in series, the variations in the relative rights and preferences between the shares of each such series so far as the same have been fixed and determined and the authority of the board of directors to fix and determine the relative rights and preferences of subsequent series.

Section 2. Any or all of the signatures of the officers of the corporation upon a certificate may be facsimiles. In case any officer, transfer agent or registrar who has signed or whose facsimile signature has been placed upon such certificate shall have ceased to be such officer, transfer agent or registrar before such certificate is issued, it may be issued by the corporation with the same effect as if he were such officer, transfer agent or registrar at the date of its issue.

LOST CERTIFICATES

Section 3. The board of directors may direct a new certificate to be issued in place of any certificate theretofore issued by the corporation alleged to have been lost or destroyed. When authorizing such issue of a new certificate, the board of directors, in its discretion and as a condition precedent to the issuance thereof, may prescribe such terms and conditions as it deems expedient, and may require such indemnities as it deems adequate, to protect the corporation from any claim that may be made against it with respect to any such certificate alleged to have been lost or destroyed.

TRANSFERS OF SHARES

Section 4. Upon surrender to the corporation or the transfer agent of the corporation of a certificate representing shares duly endorsed or accompanied by proper evidence of succession, assignment or authority to transfer, a new certificate representing shares or the equivalent in uncertificated shares, if authorized, shall be issued to the person entitled thereto, and the old certificate cancelled and the transaction. Upon receipt of proper transfer instructions from the registered owner of uncertificated shares such uncertificated shares shall be cancelled and issuance of new equivalent uncertificated shares or certificated shares shall be made to the person entitled thereto and the transaction shall be recorded upon the books of the corporation.

CLOSING OF TRANSFER BOOKS

Section 5. For the purpose of determining shareholders entitled to notice of or to vote at any meeting of shareholders, or any adjournment thereof or entitled to receive payment of any dividend, or in order to make a determination of shareholders for any other proper purpose, the board of directors may provide that the stock transfer books shall be closed for a stated period but not to exceed, in any case, fifty days. If the stock transfer books shall be closed for the purpose of determining shareholders entitled to notice of or to vote at a meeting of shareholders, such books shall be closed for at least ten days immediately preceding such meeting. In lieu of closing the stock transfer books, the board of directors may fix in advance a date as the record date for any such determination of shareholders, such date in any case to be not more than fifty days and, in case of a meeting of shareholders, not less than ten days prior to the date on which the particular action, requiring such determination of shareholders, is to be taken. If the stock transfer books are not closed and no record date is fixed for the determination of shareholders entitled to notice of or to vote at a meeting of shareholders, or shareholders entitled to receive payment of a dividend, the date on which notice of the meeting is mailed or the date on which the resolution! of the board of directors declaring such dividend is adopted, as the case may be, shall be the record date for such determination of shareholders. When a determination of shareholders entitled to vote at any meeting of shareholders has been made as provided in this section, such determination shall apply to any adjournment thereof.

REGISTERED SHAREHOLDERS

Section 6. The corporation shall be entitled to recognize the exclusive right of a person registered on its books as the owner of shares to receive-dividends, and to vote as such owner, and to hold liable for calls and assessments a person registered on its books as the owner

of shares, and shall not be bound to recognize any equitable or other claim to or interest in such share or shares on the part of any other person, whether or not it shall have express or other notice thereof, except as otherwise provided by the laws of New Mexico.

LIST OF SHAREHOLDERS

Section 7. The officer or agent having charge of the transfer books for shares shall make at least ten days before each meeting of shareholders, a complete list of the shareholders entitled to vote at such meeting, arranged in alphabetical order, with the address of each and the number of shares held by each, which list, for a period of ten days prior to such meeting, shall be kept on file at the registered office of the corporation and shall be subject to inspection by any shareholder at any time during usual business hours. Such list shall also be produced and kept open at the time and place of the meeting and shall be subject to the inspection of any shareholder during the whole time of the meeting. The original share ledger or transfer book, or a duplicate thereof, shall be prima facie evidence as to who are the shareholders entitled to examine such list or share ledger or transfer book or to vote at any meeting of the shareholders.

ARTICLE XI

GENERAL PROVISIONS

DISTRIBUTIONS

Section 1. Subject to the provisions of the articles of incorporation relating thereto, if any, distributions may be declared by the board of directors at any regular or special meeting, pursuant to law. Distributions may be paid in cash, in property or in shares of the capital stock, subject to any provisions of the articles of incorporation.

Section 2. Before payment of any distribution there may be set aside out of any funds of the corporation available for distributions such sum or sums as the directors from time to time, in their absolute discretion, think proper as a reserve fund to meet contingencies, or for equalizing distributions or for repairing or maintaining any property of the corporation, or for such other purpose as the directors shall think conducive to the interest of the corporation, and the directors may modify or abolish any such reserve in the manner in which it was created.

CHECKS

Section 3. All checks or demands for money and notes of the corporation shall be signed by such officer or officers or such other person or persons as the board of directors may from time to time designate.

FISCAL YEAR

Section 4. The fiscal year of the corporation shall be fixed by resolution of the board of directors.

SEAL

Section 5. The corporation shall not have a corporate seal.

ARTICLE XII

AMENDMENTS

Section 1. These bylaws may be altered, amended, or repealed or new bylaws may be adopted by the affirmative vote of a majority of the board of directors at any regular or special meeting of the board.

C E R T I F I C A T E

The undersigned, the duly elected and acting Secretary of SOUTHWEST AMBULANCE OF NEW MEXICO, INC., a New Mexico corporation, does hereby certify that the foregoing Bylaws constitute the Bylaws of the Corporation as approved by a Unanimous Consent In Lieu of Organizational Meeting executed by the Board of Directors dated as of March 28, 2003.

DATED this 28th day of March 2003.

/s/

John S. Banas III

Secretary