Document:

<PAGE>
                                                                    Exhibit 10.6

                     19820 North Creek Parkway, Suite 100
                              Bothell, WA  98011

                                 July 2, 2001

Dr. David Albert
1508 Guilford Lane
Oklahoma City, OK  73120

Dear Dr. Albert:

     In connection with our recent acquisition of VitalCom, Inc. and as a result
of the related consolidation and move of our operations to Tustin, California,
we wish to clarify our severance policy in respect of your continued service as
an employee of Data Critical Corporation (the "Company").  References to "you"
and "Executive" mean Dr. David Albert.

     The Company may not terminate Employee's employment with the Company
without cause unless it provides Employee at least thirty (30) days' advance
written notice of such termination.  In addition, in the event that at any time
prior to December 30, 2001:

          (a)  the Company terminates your employment at any point in time
     without cause, or

          (b)  as a requirement of your continued employment with the Company,
     the Company requires you to permanently relocate to Tustin, California and,
     rather than relocate, you elect to voluntarily terminate your employment
     with the Company (which event shall be deemed a termination without cause),

then in either such case the Company will pay you $17,875 per month (subject to
customary withholding) for a period of two months after such termination in
accordance with the Company's standard payroll procedures.  For purposes of this
letter, "cause" shall mean, the commission of an act of fraud or dishonesty in
the course of your employment with the Company; conviction of a crime
constituting a felony or in respect of any act of fraud, dishonesty or moral
turpitude; failure to perform the duties assigned to you material to the
business conduct of the Company under circumstances in which you knew or should
have reasonably known that such failure would be detrimental to the Company,
unless you remedy such failure not later than 30 days following delivery to you
of a written notice from the Company describing such failure in reasonable
detail.

     The Company and Executive acknowledge that Executive's employment is and
shall continue to be at-will, as defined under applicable law, and that
Executive's employment with the Company may be terminated by either party at any
time for any or no reason, subject to the terms of this letter.  If Executive's
employment terminates for any reason, Executive shall not be entitled to any
payments, benefits, damages, award or compensation other than as provided in
this letter or as otherwise required by law.  Any payments, benefits, damages,
awards, or other compensation provided for hereunder upon any termination hereof
shall be inclusive of (and not additive to) any such amounts required pursuant
to any applicable law. The rights and duties created by this letter may not be
modified in any way except by a written agreement executed by or on behalf of
the
<PAGE>

Board of Directors of the Company.

     The terms of this letter may be amended or waived only with the written
consent of the parties.  This letter constitutes the sole agreement of the
parties and supersedes all oral negotiations and prior writings with respect to
the subject matter hereof.  The validity, interpretation, construction and
performance of this letter agreement shall be governed by the laws of the State
of Washington, without giving effect to the principles of conflict of laws.
This letter agreement may be executed in counterparts, each of which shall be
deemed an original, but all of which together will constitute one and the same
instrument.  Any dispute or claim arising out of or in connection with this
letter agreement will be finally settled by binding arbitration in Seattle,
Washington in accordance with the rules of the American Arbitration Association
by one arbitrator appointed in accordance with said rules. Judgment on the award
rendered by the arbitrator may be entered in any court having jurisdiction
thereof.  Notwithstanding the foregoing, the parties may apply to any court of
competent jurisdiction for preliminary or interim equitable relief, or to compel
arbitration in accordance with this paragraph, without breach of this
arbitration provision.

     Advice of Counsel.  EACH PARTY TO THIS LETTER ACKNOWLEDGES THAT, IN
EXECUTING THIS LETTER, SUCH PARTY HAS HAD THE OPPORTUNITY TO SEEK THE ADVICE OF
INDEPENDENT LEGAL COUNSEL, AND HAS READ AND UNDERSTOOD ALL OF THE TERMS AND
PROVISIONS OF THIS LETTER.  THIS LETTER SHALL NOT BE CONSTRUED AGAINST ANY PARTY
BY REASON OF THE DRAFTING OR PREPARATION HEREOF.

                                 DATA CRITICAL CORPORATION:

                                 By:        /s/ Michael E. Singer
                                    ---------------------------------------
                                 Name:  Michael E. Singer
                                 Title: Executive Vice President, Corporate
                                        Development, Chief Financial Officer

                                 Address:
                                 19820 North Creek Parkway
                                 Suite 100
                                 Bothell, WA  98011

ACKNOWLEDGED AND AGREED:

DR. DAVID ALBERT

Signature:  /s/ David Albert
          ---------------------<PAGE>
                                                                    Exhibit 10.7

                              AMENDMENT NO. 1 TO
                             EMPLOYMENT AGREEMENT
                           Dated as of July 2, 2001

     THIS AMENDMENT NO. 1 TO EMPLOYMENT AGREEMENT (this "Amendment") is entered
into as of July 2, 2001 (the "Effective Date") between Data Critical Corporation
("Data Critical" or the "Company") and Richard L. Earnest ("you" or the
"Executive").

                                  WITNESSETH:

     WHEREAS, the Company and the Executive have entered into a certain letter
agreement dated as of March 1, 2001 (the "Original Employment Agreement")
setting forth certain agreements with respect to terms of the Executive's
employment with the Company; and

     WHEREAS, in connection with the Company's acquisition of VitalCom, Inc. and
as a result of the related consolidation and move of the Company's operations to
Tustin, California, the parties hereto wish to amend the terms of the Original
Employment Agreement as hereinafter set forth (the Original Employment
Agreement, as amended by this Amendment, being collectively, the "Employment
Agreement");

     NOW THEREFORE, in consideration of the mutual premises set forth herein and
for other good and valuable consideration, the receipt and sufficiency of which
are hereby acknowledged, the parties hereto hereby agree as follows:

     SECTION 1.  Amendments.  Section 3 of the Original Employment Agreement by
adding the following new subsection 3(c):

          "(c) The Company may not terminate Executive's employment with the
     Company without cause unless it provides Executive at least thirty (30)
     days' advance written notice of such termination.  In addition, in the
     event that, at any time during the term of this letter agreement, the
     Company terminates your employment at any point in time without cause, then
     the Company will pay you $12,500 per month (subject to customary
     withholding) for a period of six months after such termination in
     accordance with the Company's standard payroll procedures.  Executive will
     continue to receive health benefits over the six-month severance period.
     For purposes of this letter, "cause" shall mean, the commission of an act
     of fraud or dishonesty in the course of your employment with the Company;
     conviction of a crime constituting a felony or in respect of any act of
     fraud, dishonesty or moral turpitude; failure to perform the duties
     assigned to you material to the business conduct of the Company under
     circumstances in which you knew or should have reasonably known that such
     failure would be detrimental to the Company, unless you remedy such failure
     not later than 30 days following delivery to you of a written notice from
     the Company describing such failure in reasonable detail."

     SECTION 2.  Effect on Original Employment Agreement.  This Amendment amends
the Original Employment Agreement and all terms of this Amendment shall be
deemed incorporated into and made a part of the Original Employment Agreement.
Except as and to the extent specifically modified by the terms of this
Amendment, all terms of the Original Employment Agreement shall remain in full
force and effect. All references to the Employment Agreement in any other
agreement or document, and all references in the Employment Agreement to "this
<PAGE>

Agreement," "hereof," "hereunder," or "hereto" or words of similar import shall
be deemed to be references to the Original Employment Agreement as amended
hereby.

     SECTION 3.  Miscellaneous Provisions.

     3.1  Choice of Law.  The validity, interpretation, construction and
performance of this Amendment shall be governed by the laws of the State of
Washington, without giving effect to the principles of conflict of laws.

     3.2  Counterparts.  This Amendment may be executed in counterparts, each of
which shall be deemed an original, but all of which together will constitute one
and the same instrument.

     3.3  Advice of Counsel.  EACH PARTY TO THIS AMENDMENT ACKNOWLEDGES THAT, IN
EXECUTING THIS AMENDMENT, SUCH PARTY HAS HAD THE OPPORTUNITY TO SEEK THE ADVICE
OF INDEPENDENT LEGAL COUNSEL, AND HAS READ AND UNDERSTOOD ALL OF THE TERMS AND
PROVISIONS OF THIS AMENDMENT.  NEITHER THE ORIGINAL EMPLOYMENT AGREEMENT NOR
THIS AMENDMENT SHALL BE CONSTRUED AGAINST ANY PARTY BY REASON OF THE DRAFTING OR
PREPARATION HEREOF.

                           [Signature Page Follows]

                                       2
<PAGE>

     The parties have executed this Amendment on the date first written above.

                                  DATA CRITICAL CORPORATION

                                  By:      /s/ Michael E. Singer
                                     -----------------------------------
                                  Name:  Michael E. Singer
                                  Title: Executive Vice President, Corporate
                                         Development, Chief Financial Officer

                                  RICHARD L. EARNEST

                                  Signature:   /s/ Richard L. Earnest
                                            ----------------------------

                                       3

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00028-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00028-of-00352.parquet"}]]