SlideShare ist ein Scribd-Unternehmen logo
1 von 15
Biopharmaceutics and
         PK
        Lab 5
Calculation of PK parameters using
one and two compartment model: IV
               bolus.
    Dr Sameh Rabea
Remember

   For 1st order kinetic one-compartment the
    equation will be:
      Cp= (Cp) 0 e –kt
Where: Cp: Y ; (Cp) 0 : intercept; t: X;    k: -slope x
   2.303; Slope= (logC2 – logC1)/t2-t1.
Or Ke = ln (C1/C2)/t2-t1
 The PK model:

       I.V.               Central          Ke
    injection          Compartment              Out.

   AUC= Cp0/ Ke
   Vdc= Dose/ Cp0.
   t ½= 0.693/ Ke.
   For 1storder kinetic two-compartment
    the equation will be:
        Cp= A e –αt + B e –βt
   Where A: intercept of line 1 and B
    intercept of line 2; α: distribution
    rate constant and β: elimination rate
    constant.
   The PK model:

     I.V.
            in     Central
                               K12
                                       Peripheral
                 Compartment          Compartment
     inj.
                               K 21

                     K2
Cp0= A + B
K2 = Cp0 / ( A/ α + B/ β )
K12= A.B (β- α) 2 / Cp0 (A β + B α)
K21= A β + B α / Cp0 .
   AUC= A/α + B/β .
   t ½= 0.693/ β.
   Vd c= Dose/Cp0= Dose/ A+B.
   Vd area= Dose/AUC. β
   Vd ss = Vdc + (K12/K21) Vdc
   Vd tissue= Vd area – Vdc.
   Therefore: Vd area> Vd ss > Vdc> Vd tissue.
   But Vd ss is not affected by elimination, so its
    represents true volume of distribution.
   CL = Vdc. Ke or CL= Vdc. Β.
Problem # 1

   A patient received 500 mg cefepime I.V
    bolus injection and numerous blood
    samples were drawn as the following:
Plotting Data
Time (hr)           Conc.( µ/ml)
   0.5                   38.2
   1                     21.6
   2                     11.6
   4                     5.0
   8                     1.4
   12                    0.2
   A- Test the order of this data.
   B- Write your model
   Calculate as many PK parameter as
    possible.
Problem # 2

   A patient received 300 mg I.V.
    dose of a drug. Several blood
    samples were collected and the
    following plasma concentrations
    were obtained:
Plotting Data
Time (hr)           Conc.( µ/ml)
   0.2                   5.6
   0.4                   4.6
   0.6                   3.8
   0.8                   3.2
   1                     2.8
   2                     1.8
   3                     1.35
   4                     1.2
   5                     1.06
   24                    0.0
   Test the order of this data.
   Write the model.
   Calculate PK parameters.
Problem # 3

   A patient received 350 mg I.V
    bolus dose of drug. Several
    blood samples were collected
    and the following plasma
    concentrations were obtained:
Plotting Data
Time (hr)          Conc. (µg/ml)
   0.5                   20.8
   1                     13.8
   1.5                   10
   2                     7.9
   3                     5.3
   6                     2.9
   8                      2
   10                    1.4
   A- Draw diagrammatic
    presentation describing PK
    model , and write your equation.
   Calculate the following PK parameters:
   A:
   B:
   α:
   β (Ke):
   t1/2 :
   AUC:
   Vdc:
   Vd area:

Weitere ähnliche Inhalte

Andere mochten auch (9)

Pharmacokinetic
PharmacokineticPharmacokinetic
Pharmacokinetic
 
A seminar on one & two compartment open model extra vascular administration
A seminar on one & two compartment open model extra vascular administrationA seminar on one & two compartment open model extra vascular administration
A seminar on one & two compartment open model extra vascular administration
 
Pharmacokinetics: Lecture two
Pharmacokinetics: Lecture twoPharmacokinetics: Lecture two
Pharmacokinetics: Lecture two
 
Two compartment model
Two compartment modelTwo compartment model
Two compartment model
 
Physiological pharmacokinetic models
Physiological pharmacokinetic modelsPhysiological pharmacokinetic models
Physiological pharmacokinetic models
 
one compartment model ppt
one compartment model pptone compartment model ppt
one compartment model ppt
 
Compartment Modelling
Compartment ModellingCompartment Modelling
Compartment Modelling
 
Pharmacokinetic models
Pharmacokinetic modelsPharmacokinetic models
Pharmacokinetic models
 
Fluids, Electrolytes & IV Therapy
Fluids, Electrolytes & IV TherapyFluids, Electrolytes & IV Therapy
Fluids, Electrolytes & IV Therapy
 

Ähnlich wie Pk lab 5

Assignment 1 Description Marks out of Wtg() Due date .docx
Assignment 1  Description Marks out of Wtg() Due date .docxAssignment 1  Description Marks out of Wtg() Due date .docx
Assignment 1 Description Marks out of Wtg() Due date .docx
fredharris32
 
Ee395 lab 2 - loren - victor - taylor
Ee395   lab 2 - loren - victor - taylorEe395   lab 2 - loren - victor - taylor
Ee395 lab 2 - loren - victor - taylor
Loren Schwappach
 
reference notes455647_1_EE460-Project-131.pdfKing Fahd Un.docx
reference notes455647_1_EE460-Project-131.pdfKing Fahd Un.docxreference notes455647_1_EE460-Project-131.pdfKing Fahd Un.docx
reference notes455647_1_EE460-Project-131.pdfKing Fahd Un.docx
debishakespeare
 
Title of the ReportA. Partner, B. Partner, and C. Partner.docx
Title of the ReportA. Partner, B. Partner, and C. Partner.docxTitle of the ReportA. Partner, B. Partner, and C. Partner.docx
Title of the ReportA. Partner, B. Partner, and C. Partner.docx
juliennehar
 
cosmic-ray-detection(2)
cosmic-ray-detection(2)cosmic-ray-detection(2)
cosmic-ray-detection(2)
Thomas Adams
 
Electric Circuits Lab Series RC Circuits Phase Angle, Phase Lag.docx
Electric Circuits Lab Series RC Circuits Phase Angle, Phase Lag.docxElectric Circuits Lab Series RC Circuits Phase Angle, Phase Lag.docx
Electric Circuits Lab Series RC Circuits Phase Angle, Phase Lag.docx
pauline234567
 
L-24(DK&SSG)(PE) ((EE)NPTEL) (4 files merged).pdf
L-24(DK&SSG)(PE) ((EE)NPTEL) (4 files merged).pdfL-24(DK&SSG)(PE) ((EE)NPTEL) (4 files merged).pdf
L-24(DK&SSG)(PE) ((EE)NPTEL) (4 files merged).pdf
satyam jha
 
EE452_Flyback Convert
EE452_Flyback ConvertEE452_Flyback Convert
EE452_Flyback Convert
ki hei chan
 
DESIGN OF TWO-STAGE OP AMPS.pdf
DESIGN OF TWO-STAGE OP AMPS.pdfDESIGN OF TWO-STAGE OP AMPS.pdf
DESIGN OF TWO-STAGE OP AMPS.pdf
tempor3
 

Ähnlich wie Pk lab 5 (20)

Assignment 1 Description Marks out of Wtg() Due date .docx
Assignment 1  Description Marks out of Wtg() Due date .docxAssignment 1  Description Marks out of Wtg() Due date .docx
Assignment 1 Description Marks out of Wtg() Due date .docx
 
PWM Step-down Converter(NJM2309)
PWM Step-down Converter(NJM2309)PWM Step-down Converter(NJM2309)
PWM Step-down Converter(NJM2309)
 
Single stage bjt amplifier. experiment 6
Single stage bjt amplifier. experiment 6Single stage bjt amplifier. experiment 6
Single stage bjt amplifier. experiment 6
 
PVCOM-PV Coding & Modelling.
PVCOM-PV Coding & Modelling.PVCOM-PV Coding & Modelling.
PVCOM-PV Coding & Modelling.
 
07
0707
07
 
506 267-276
506 267-276506 267-276
506 267-276
 
17442 biosensors
17442  biosensors17442  biosensors
17442 biosensors
 
Case Study: Cyclic Voltametric Measurement
Case Study: Cyclic Voltametric MeasurementCase Study: Cyclic Voltametric Measurement
Case Study: Cyclic Voltametric Measurement
 
SPM PHYSICS FORM 5 electronics
SPM PHYSICS FORM 5 electronicsSPM PHYSICS FORM 5 electronics
SPM PHYSICS FORM 5 electronics
 
Proceeding - PANIC
Proceeding - PANICProceeding - PANIC
Proceeding - PANIC
 
Two stage op amp design on cadence
Two stage op amp design on cadenceTwo stage op amp design on cadence
Two stage op amp design on cadence
 
Ee395 lab 2 - loren - victor - taylor
Ee395   lab 2 - loren - victor - taylorEe395   lab 2 - loren - victor - taylor
Ee395 lab 2 - loren - victor - taylor
 
reference notes455647_1_EE460-Project-131.pdfKing Fahd Un.docx
reference notes455647_1_EE460-Project-131.pdfKing Fahd Un.docxreference notes455647_1_EE460-Project-131.pdfKing Fahd Un.docx
reference notes455647_1_EE460-Project-131.pdfKing Fahd Un.docx
 
Title of the ReportA. Partner, B. Partner, and C. Partner.docx
Title of the ReportA. Partner, B. Partner, and C. Partner.docxTitle of the ReportA. Partner, B. Partner, and C. Partner.docx
Title of the ReportA. Partner, B. Partner, and C. Partner.docx
 
cosmic-ray-detection(2)
cosmic-ray-detection(2)cosmic-ray-detection(2)
cosmic-ray-detection(2)
 
Electric Circuits Lab Series RC Circuits Phase Angle, Phase Lag.docx
Electric Circuits Lab Series RC Circuits Phase Angle, Phase Lag.docxElectric Circuits Lab Series RC Circuits Phase Angle, Phase Lag.docx
Electric Circuits Lab Series RC Circuits Phase Angle, Phase Lag.docx
 
L-24(DK&SSG)(PE) ((EE)NPTEL) (4 files merged).pdf
L-24(DK&SSG)(PE) ((EE)NPTEL) (4 files merged).pdfL-24(DK&SSG)(PE) ((EE)NPTEL) (4 files merged).pdf
L-24(DK&SSG)(PE) ((EE)NPTEL) (4 files merged).pdf
 
EE452_Flyback Convert
EE452_Flyback ConvertEE452_Flyback Convert
EE452_Flyback Convert
 
DESIGN OF TWO-STAGE OP AMPS.pdf
DESIGN OF TWO-STAGE OP AMPS.pdfDESIGN OF TWO-STAGE OP AMPS.pdf
DESIGN OF TWO-STAGE OP AMPS.pdf
 
Ijmsr 2016-14
Ijmsr 2016-14Ijmsr 2016-14
Ijmsr 2016-14
 

Kürzlich hochgeladen

Russian Call Girls Lucknow Just Call 👉👉7877925207 Top Class Call Girl Service...
Russian Call Girls Lucknow Just Call 👉👉7877925207 Top Class Call Girl Service...Russian Call Girls Lucknow Just Call 👉👉7877925207 Top Class Call Girl Service...
Russian Call Girls Lucknow Just Call 👉👉7877925207 Top Class Call Girl Service...
adilkhan87451
 
💚Call Girls In Amritsar 💯Anvi 📲🔝8725944379🔝Amritsar Call Girl No💰Advance Cash...
💚Call Girls In Amritsar 💯Anvi 📲🔝8725944379🔝Amritsar Call Girl No💰Advance Cash...💚Call Girls In Amritsar 💯Anvi 📲🔝8725944379🔝Amritsar Call Girl No💰Advance Cash...
💚Call Girls In Amritsar 💯Anvi 📲🔝8725944379🔝Amritsar Call Girl No💰Advance Cash...
Sheetaleventcompany
 

Kürzlich hochgeladen (20)

Top Rated Pune Call Girls (DIPAL) ⟟ 8250077686 ⟟ Call Me For Genuine Sex Serv...
Top Rated Pune Call Girls (DIPAL) ⟟ 8250077686 ⟟ Call Me For Genuine Sex Serv...Top Rated Pune Call Girls (DIPAL) ⟟ 8250077686 ⟟ Call Me For Genuine Sex Serv...
Top Rated Pune Call Girls (DIPAL) ⟟ 8250077686 ⟟ Call Me For Genuine Sex Serv...
 
Call Girls Jaipur Just Call 9521753030 Top Class Call Girl Service Available
Call Girls Jaipur Just Call 9521753030 Top Class Call Girl Service AvailableCall Girls Jaipur Just Call 9521753030 Top Class Call Girl Service Available
Call Girls Jaipur Just Call 9521753030 Top Class Call Girl Service Available
 
Kollam call girls Mallu aunty service 7877702510
Kollam call girls Mallu aunty service 7877702510Kollam call girls Mallu aunty service 7877702510
Kollam call girls Mallu aunty service 7877702510
 
Russian Call Girls Lucknow Just Call 👉👉7877925207 Top Class Call Girl Service...
Russian Call Girls Lucknow Just Call 👉👉7877925207 Top Class Call Girl Service...Russian Call Girls Lucknow Just Call 👉👉7877925207 Top Class Call Girl Service...
Russian Call Girls Lucknow Just Call 👉👉7877925207 Top Class Call Girl Service...
 
Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...
Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...
Mumbai ] (Call Girls) in Mumbai 10k @ I'm VIP Independent Escorts Girls 98333...
 
Models Call Girls In Hyderabad 9630942363 Hyderabad Call Girl & Hyderabad Esc...
Models Call Girls In Hyderabad 9630942363 Hyderabad Call Girl & Hyderabad Esc...Models Call Girls In Hyderabad 9630942363 Hyderabad Call Girl & Hyderabad Esc...
Models Call Girls In Hyderabad 9630942363 Hyderabad Call Girl & Hyderabad Esc...
 
Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...
Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...
Jogeshwari ! Call Girls Service Mumbai - 450+ Call Girl Cash Payment 90042684...
 
Call Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service AvailableCall Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service Available
Call Girls Rishikesh Just Call 8250077686 Top Class Call Girl Service Available
 
Russian Call Girls Service Jaipur {8445551418} ❤️PALLAVI VIP Jaipur Call Gir...
Russian Call Girls Service  Jaipur {8445551418} ❤️PALLAVI VIP Jaipur Call Gir...Russian Call Girls Service  Jaipur {8445551418} ❤️PALLAVI VIP Jaipur Call Gir...
Russian Call Girls Service Jaipur {8445551418} ❤️PALLAVI VIP Jaipur Call Gir...
 
Top Rated Hyderabad Call Girls Erragadda ⟟ 9332606886 ⟟ Call Me For Genuine ...
Top Rated  Hyderabad Call Girls Erragadda ⟟ 9332606886 ⟟ Call Me For Genuine ...Top Rated  Hyderabad Call Girls Erragadda ⟟ 9332606886 ⟟ Call Me For Genuine ...
Top Rated Hyderabad Call Girls Erragadda ⟟ 9332606886 ⟟ Call Me For Genuine ...
 
8980367676 Call Girls In Ahmedabad Escort Service Available 24×7 In Ahmedabad
8980367676 Call Girls In Ahmedabad Escort Service Available 24×7 In Ahmedabad8980367676 Call Girls In Ahmedabad Escort Service Available 24×7 In Ahmedabad
8980367676 Call Girls In Ahmedabad Escort Service Available 24×7 In Ahmedabad
 
💚Call Girls In Amritsar 💯Anvi 📲🔝8725944379🔝Amritsar Call Girl No💰Advance Cash...
💚Call Girls In Amritsar 💯Anvi 📲🔝8725944379🔝Amritsar Call Girl No💰Advance Cash...💚Call Girls In Amritsar 💯Anvi 📲🔝8725944379🔝Amritsar Call Girl No💰Advance Cash...
💚Call Girls In Amritsar 💯Anvi 📲🔝8725944379🔝Amritsar Call Girl No💰Advance Cash...
 
Call Girls Service Jaipur {9521753030 } ❤️VVIP BHAWNA Call Girl in Jaipur Raj...
Call Girls Service Jaipur {9521753030 } ❤️VVIP BHAWNA Call Girl in Jaipur Raj...Call Girls Service Jaipur {9521753030 } ❤️VVIP BHAWNA Call Girl in Jaipur Raj...
Call Girls Service Jaipur {9521753030 } ❤️VVIP BHAWNA Call Girl in Jaipur Raj...
 
(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...
(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...
(Low Rate RASHMI ) Rate Of Call Girls Jaipur ❣ 8445551418 ❣ Elite Models & Ce...
 
Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...
Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...
Independent Call Girls In Jaipur { 8445551418 } ✔ ANIKA MEHTA ✔ Get High Prof...
 
Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...
Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...
Premium Call Girls In Jaipur {8445551418} ❤️VVIP SEEMA Call Girl in Jaipur Ra...
 
Top Rated Hyderabad Call Girls Chintal ⟟ 9332606886 ⟟ Call Me For Genuine Se...
Top Rated  Hyderabad Call Girls Chintal ⟟ 9332606886 ⟟ Call Me For Genuine Se...Top Rated  Hyderabad Call Girls Chintal ⟟ 9332606886 ⟟ Call Me For Genuine Se...
Top Rated Hyderabad Call Girls Chintal ⟟ 9332606886 ⟟ Call Me For Genuine Se...
 
Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...
Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...
Low Rate Call Girls Bangalore {7304373326} ❤️VVIP NISHA Call Girls in Bangalo...
 
9630942363 Genuine Call Girls In Ahmedabad Gujarat Call Girls Service
9630942363 Genuine Call Girls In Ahmedabad Gujarat Call Girls Service9630942363 Genuine Call Girls In Ahmedabad Gujarat Call Girls Service
9630942363 Genuine Call Girls In Ahmedabad Gujarat Call Girls Service
 
Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...
Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...
Coimbatore Call Girls in Thudiyalur : 7427069034 High Profile Model Escorts |...
 

Pk lab 5

  • 1. Biopharmaceutics and PK Lab 5 Calculation of PK parameters using one and two compartment model: IV bolus. Dr Sameh Rabea
  • 2. Remember  For 1st order kinetic one-compartment the equation will be:  Cp= (Cp) 0 e –kt Where: Cp: Y ; (Cp) 0 : intercept; t: X; k: -slope x 2.303; Slope= (logC2 – logC1)/t2-t1. Or Ke = ln (C1/C2)/t2-t1  The PK model: I.V. Central Ke  injection Compartment Out.  AUC= Cp0/ Ke  Vdc= Dose/ Cp0.  t ½= 0.693/ Ke.
  • 3. For 1storder kinetic two-compartment the equation will be:  Cp= A e –αt + B e –βt  Where A: intercept of line 1 and B intercept of line 2; α: distribution rate constant and β: elimination rate constant.
  • 4. The PK model: I.V. in Central K12 Peripheral Compartment Compartment inj. K 21 K2 Cp0= A + B K2 = Cp0 / ( A/ α + B/ β ) K12= A.B (β- α) 2 / Cp0 (A β + B α) K21= A β + B α / Cp0 .
  • 5. AUC= A/α + B/β .  t ½= 0.693/ β.  Vd c= Dose/Cp0= Dose/ A+B.  Vd area= Dose/AUC. β  Vd ss = Vdc + (K12/K21) Vdc  Vd tissue= Vd area – Vdc.  Therefore: Vd area> Vd ss > Vdc> Vd tissue.  But Vd ss is not affected by elimination, so its represents true volume of distribution.  CL = Vdc. Ke or CL= Vdc. Β.
  • 6. Problem # 1  A patient received 500 mg cefepime I.V bolus injection and numerous blood samples were drawn as the following:
  • 7. Plotting Data Time (hr) Conc.( µ/ml) 0.5 38.2 1 21.6 2 11.6 4 5.0 8 1.4 12 0.2
  • 8. A- Test the order of this data.  B- Write your model  Calculate as many PK parameter as possible.
  • 9. Problem # 2  A patient received 300 mg I.V. dose of a drug. Several blood samples were collected and the following plasma concentrations were obtained:
  • 10. Plotting Data Time (hr) Conc.( µ/ml) 0.2 5.6 0.4 4.6 0.6 3.8 0.8 3.2 1 2.8 2 1.8 3 1.35 4 1.2 5 1.06 24 0.0
  • 11. Test the order of this data.  Write the model.  Calculate PK parameters.
  • 12. Problem # 3  A patient received 350 mg I.V bolus dose of drug. Several blood samples were collected and the following plasma concentrations were obtained:
  • 13. Plotting Data Time (hr) Conc. (µg/ml) 0.5 20.8 1 13.8 1.5 10 2 7.9 3 5.3 6 2.9 8 2 10 1.4
  • 14. A- Draw diagrammatic presentation describing PK model , and write your equation.
  • 15. Calculate the following PK parameters:  A:  B:  α:  β (Ke):  t1/2 :  AUC:  Vdc:  Vd area: