Diese Präsentation wurde erfolgreich gemeldet.

Ventilation and Perfusion in different zones of lungs.

80

Teilen

Wird geladen in …3
×
14 von 17
14 von 17

Ventilation and Perfusion in different zones of lungs.

80

Teilen

Herunterladen, um offline zu lesen

Beschreibung

This powerpoint presentation will make you explore about the Perfusion and Ventilation in different zones of lungs with its co-relation with pulmonary tuberculosis.

Transkript

  1. 1. Gandaki Medical College By: Gyaltsen Gurung
  2. 2. To define and classify ventilation and perfusion in lungs. To describe zone of perfusion in lungs To describe ventilation perfusion ratio in lungs To correlate VENTILATION and PERFUSION ratio with PULMONARY TUBERCULOSIS OBJECTIVES
  3. 3.  VENTILATION The rate at which air enters or leaves the lungs.  Types : i) Pulmonary Ventilation ii) Alveolar Ventilation 1)Pulmonary Ventilation (minute ventilation or respiratory minute volume): Is the volume of air moving in and out of respiratory tract in a given unit of time during quiet breathing. INTRODUCTION
  4. 4.   Pulmonary Ventilation= Tidal volume X Respiratory Rate = 500 ml x 12/minute = 6000 ml/minute 2) Alveolar ventilation: It is the amount of air utilized for gaseous exchange every minute. Alveolar ventilation = (Tidal volume – Dead space) X Respiratory Rate = ( 500 – 150 ) ml x 12/minute = 4200ml/minute TYPES OF VENTILATION.....
  5. 5.   PERFUSION: The movement of blood into the lungs through pulmonary capillaries.  VENTILATION/PERFUSION RATIO : It is the ratio of alveolar ventilation and the amount of blood that perfuse the alveoli. Mathematically, V/Q = 0.84 VENTILATION AND PERFUSION
  6. 6.  ZONES OF LUNGS
  7. 7.  Zone 1: No blood flow Reason: More negative intrapleural pressure alveoli size↑ & lower arterial pressure due to gravity → decrease diameter of vessels  Zone 2: Intermittent blood flow Reason: arterial pressure is greater than alveolar and venous pressure. Whereas, venules pressure are less than alveolar pressure  venules are collapsed Zone 3: Continuous blood flow Reason: Due to gravity, there is high pressure → vasodilation → more blood flow ZONE OF PERFUSION
  8. 8.  Ventilation and Perfusion (5ml/minute) (0.56ml/minute) (10.3ml/minute)
  9. 9. Zone 1: 1.92 L/minute Reason: Increase size of alveoli Zone 2: 4 L/minute Reason: intermittent size of alveoli Zone 3: 6.5 L/minute Reason: Decrease size of alveoli ZONE OF VENTILATION
  10. 10.  It is the ratio of alveolar ventilation and the amount of blood that perfuse the alveoli. Calculation: V/Q= alveolar ventilation ÷ pulmonary blood flow Alveolar ventilation= 4200ml/minute Pulmonary blood flow=5000ml/minute So, V/Q= 0.84 Ventilation/Perfusion (V/Q) Ratio
  11. 11.  V/Q RATIO IN LUNGS
  12. 12.  Zone 1: Ventilation(V) >>> Perfusion(Q) V/Q= 3.4 (high) Zone 2: Ventilation(V) = Perfusion(Q) V/Q= 0.8 (average) Zone 3: Perfusion(Q) >>> Ventilation(V) V/Q=0.63(low) V/Q IN DIFFERENT ZONES OF LUNGS
  13. 13. Apical Zone of lungs : It is more infected by Pulmonary Tuberculosis Reasons: i) There is low perfusion. ii) There is higher V/Q , higher PO2 and lower PCO2 (M.tubercle is strict aerobes) iii) Less of the oxygen is carried away by the blood in apex of lungs. ( Highest O2 available) V/Q and PULMONARY TUBERCULOSIS
  14. 14. Zone 1: Ventilation(V) >>> Perfusion(Q) V/Q= 3.4 (high) Zone 2: Ventilation(V) = Perfusion(Q) V/Q= 0.8 (average) Zone 3: Perfusion(Q) >>> Ventilation(V) V/Q=0.63(low) Apex: It is more infected by Pulmonary Tuberculosis because SUMMARY
  15. 15.   Guyton and Hall ( 13th edition) Text Book of Medical Physiology  K Sembulingam and Prema Sembulingam(6th edition) Essentials of Medical Physiology  Ananthanarayan and Paniker’s( 9th edition) Text Book of Microbiology REFERENCES
  16. 16.
  17. 17.

Beschreibung

This powerpoint presentation will make you explore about the Perfusion and Ventilation in different zones of lungs with its co-relation with pulmonary tuberculosis.

Transkript

  1. 1. Gandaki Medical College By: Gyaltsen Gurung
  2. 2. To define and classify ventilation and perfusion in lungs. To describe zone of perfusion in lungs To describe ventilation perfusion ratio in lungs To correlate VENTILATION and PERFUSION ratio with PULMONARY TUBERCULOSIS OBJECTIVES
  3. 3.  VENTILATION The rate at which air enters or leaves the lungs.  Types : i) Pulmonary Ventilation ii) Alveolar Ventilation 1)Pulmonary Ventilation (minute ventilation or respiratory minute volume): Is the volume of air moving in and out of respiratory tract in a given unit of time during quiet breathing. INTRODUCTION
  4. 4.   Pulmonary Ventilation= Tidal volume X Respiratory Rate = 500 ml x 12/minute = 6000 ml/minute 2) Alveolar ventilation: It is the amount of air utilized for gaseous exchange every minute. Alveolar ventilation = (Tidal volume – Dead space) X Respiratory Rate = ( 500 – 150 ) ml x 12/minute = 4200ml/minute TYPES OF VENTILATION.....
  5. 5.   PERFUSION: The movement of blood into the lungs through pulmonary capillaries.  VENTILATION/PERFUSION RATIO : It is the ratio of alveolar ventilation and the amount of blood that perfuse the alveoli. Mathematically, V/Q = 0.84 VENTILATION AND PERFUSION
  6. 6.  ZONES OF LUNGS
  7. 7.  Zone 1: No blood flow Reason: More negative intrapleural pressure alveoli size↑ & lower arterial pressure due to gravity → decrease diameter of vessels  Zone 2: Intermittent blood flow Reason: arterial pressure is greater than alveolar and venous pressure. Whereas, venules pressure are less than alveolar pressure  venules are collapsed Zone 3: Continuous blood flow Reason: Due to gravity, there is high pressure → vasodilation → more blood flow ZONE OF PERFUSION
  8. 8.  Ventilation and Perfusion (5ml/minute) (0.56ml/minute) (10.3ml/minute)
  9. 9. Zone 1: 1.92 L/minute Reason: Increase size of alveoli Zone 2: 4 L/minute Reason: intermittent size of alveoli Zone 3: 6.5 L/minute Reason: Decrease size of alveoli ZONE OF VENTILATION
  10. 10.  It is the ratio of alveolar ventilation and the amount of blood that perfuse the alveoli. Calculation: V/Q= alveolar ventilation ÷ pulmonary blood flow Alveolar ventilation= 4200ml/minute Pulmonary blood flow=5000ml/minute So, V/Q= 0.84 Ventilation/Perfusion (V/Q) Ratio
  11. 11.  V/Q RATIO IN LUNGS
  12. 12.  Zone 1: Ventilation(V) >>> Perfusion(Q) V/Q= 3.4 (high) Zone 2: Ventilation(V) = Perfusion(Q) V/Q= 0.8 (average) Zone 3: Perfusion(Q) >>> Ventilation(V) V/Q=0.63(low) V/Q IN DIFFERENT ZONES OF LUNGS
  13. 13. Apical Zone of lungs : It is more infected by Pulmonary Tuberculosis Reasons: i) There is low perfusion. ii) There is higher V/Q , higher PO2 and lower PCO2 (M.tubercle is strict aerobes) iii) Less of the oxygen is carried away by the blood in apex of lungs. ( Highest O2 available) V/Q and PULMONARY TUBERCULOSIS
  14. 14. Zone 1: Ventilation(V) >>> Perfusion(Q) V/Q= 3.4 (high) Zone 2: Ventilation(V) = Perfusion(Q) V/Q= 0.8 (average) Zone 3: Perfusion(Q) >>> Ventilation(V) V/Q=0.63(low) Apex: It is more infected by Pulmonary Tuberculosis because SUMMARY
  15. 15.   Guyton and Hall ( 13th edition) Text Book of Medical Physiology  K Sembulingam and Prema Sembulingam(6th edition) Essentials of Medical Physiology  Ananthanarayan and Paniker’s( 9th edition) Text Book of Microbiology REFERENCES
  16. 16.
  17. 17.

Weitere Verwandte Inhalte

Ähnliche Bücher

Kostenlos mit einer 30-tägigen Testversion von Scribd

Alle anzeigen

Ähnliche Hörbücher

Kostenlos mit einer 30-tägigen Testversion von Scribd

Alle anzeigen

×