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Wiggers Diagram
Wiggers Diagram Intracardiac Pressures
| Question | Answer |
|---|---|
| The pressure of the Aorta in Systole? | 110-130 mmHg |
| What is the pressure of the Aorta in Diastole? | 70-80 mmHg |
| What is the Systolic pressure of the Pulmonary Artery? | 15-25 mm Hg |
| What is the Diastolic range of the Pulmonary Artery? | 8-15 mm Hg |
| The Left Atrium's MEAN pressure is what? | 4-12 mm Hg |
| The Left Ventricle's Systolic pressure measured in mmHg? | 110-130 mm Hg |
| 4-12 mm Hg in DIASTOLIC | The Left Ventricle |
| 15-25 mm Hg SYSTOLIC | Right Ventricle |
| Diastolic pressure of Right Ventricle in Diastole | 0-8 mm Hg |
| Mean Pressure of 0-8 mm Hg | Right Atrium |
| What pressure gradient does blood flow? | High to low |
| What happens to the flow of blood as the pressures equilibrate? | Decreases |
| Systemic Arterial System | Organs of the body receive blood via this system |
| The cardiac valves open and close due to | Change in pressure |
| At the onset of the QRS complex what do the AV valves do? | The atrioventricular valves close |
| Ventricular pressure exceeds atrial pressure at what part on the EKG? | QRS complex |
| When do the atrioventricular valves close? | When ventricular pressure exceeds atrial pressure |
| The atrioventricular valves open at what part on the EKG? | End of the T wave |
| What do the atrioventricular valves do when ventricular pressure drops below atrial pressure? | Open |
| Atrioventricular valve that opens first and closes last | Tricuspid valve |
| Atrioventricular valve that opens last and closes first | Mitral Valve |
| Semilunar valve that opens first and closes last | Pulmonic Valve |
| Semilunar valve that opens last and closes first | Aortic Valve |
| The ventricular pressure drops below arterial pressure | End of ventricular systole |
| The Semilunar valves close when | Ventricular pressure drops below arterial pressure |
| The Semilunar valves open when | Ventricular pressure exceeds arterial pressure |
| Ventricular pressure exceeds arterial pressure | In early ventricular systole |
| The Semilunar valves close | At the end of ventricular systole |
| In early ventricular systole | The semilunar valves open |
| Ventricular Diastole represents | The period of time the ventricles are filling |
| Between the end of the T wave and the onset of the QRS complex | Ventricular Diastole |
| Approximately 70% of the Diastolic filling occurs during | Early Ventricular Diastole |
| Mid-Diastole when there is equilibration of ventricular and atrial diastolic pressures with little filling of the ventricles occurring during this time period | Diastasis |
| Late diastolic filling due to atrial contraction as marked by the P wave of the EKG | Atrial Systole |
| Atrial Systole | Contributes about 30% to ventricular diastolic filling. |
| Isovolumic contraction also know as | Pre-ejection period |
| An early systolic event occurring between atrioventricular valve closure and semilunar valve opening | Isovolumic contraction |
| Isovolumic contraction | An increase in ventricular pressure with no change in ventricular volume |
| Ventricular SYSTOLE occurs between the onset of ______ and end of ________ | QRS, the T-wave |
| Ventricles are ejecting blood into the great arteries | Systolic ejection period or time |
| When the ventricles are ejecting blood into the great arteries | Ventricular systole occurs |
| Ventricular volume is lowest at | Peak ventricular SYSTOLE |
| At peak ventricular systole | ventricular volume is lowest |
| Isovolumic relaxation represents | Early ventricular diastole |
| Begins with the closure of the semilunar valves to the opening of the atrioventricular valves | Isovolumic relaxation |
| Early ventricular diastole | Begins with the closure of the semilunar valves to the opening of the atrioventricular valves |
| During isovolumic relaxation | The ventricular pressure is decreasing with no change in ventricular volume |
| The ventricular pressure is decreasing with no change in ventricular volume | During isovolumic relaxation |
| Blood flows from | High pressure to low pressure |
| High to Low | Flow of blood |
| Atrioventricular valve regurgitation | Will increase the atrial "v" wave |
| An increase in atrial "v" wave | Shows atrioventricular valve regurgitation |
| Shows an increase in atrial "a" wave | Atrioventricular valve stenosis |
| CHF, constrictive pericarditis, restrictive cardiomyopathy and diastolic dysfunction | Will increase ventricular diastolic pressure |
| Will increase pulmonary artery pressures | Left to right shunts, pulmonary hypertension or left heart disease |
| S1 is the first normal heart sound and is created by | The closure of the atrioventricular valves at the onset of the QRS complex where ventricular pressure exceeds atrial pressure |
| The closure of the atrioventricular valves at the onset of the QRS complex where ventricular pressure exceeds atrial pressure | S1 |
| S2 is the second normal heart sound and is created by closure of the semilunar valves | At the end of the T-wave where arterial pressure falls below ventricular pressure |
| At the end of the T-wave where arterial pressure falls below ventricular pressure, this is created by closure of the semilunar valves | S2 |
Created by:
CVTMom
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