Exam 6: Pulmonary Blood Flow

What would happen to PCWP in a patient with a stenotic mitral valve?

What is the normal value for systemic vascular resistance (SVR)?

Which of the following statements are true of the bronchial vasculature? I.Bronchial systemic venous blood drains directly into the pulmonary veins. II.Oxygen-poor blood mixes with freshly oxygenated pulmonary venous blood on its way to the left ventricle. III.Bronchial blood flow is only 1% to 2% of the cardiac output. IV.The anatomical shunt from this source is usually approximately 10%.

In the presence of increased LAP due to inadequate left ventricular pumping action, what will be the effect on the PVR?

Which of the following will inhibit HPV? I.Alkalemia II.Endogenous nitric oxide and prostacyclin III.Alpha-adrenergic blockers IV.Beta-adrenergic stimulants

What is the name of the pressure that is commonly used as a clinical indicator of left ventricular function?

In the presence of exercise, the increased cardiac output and PAPs will recruit which of the following zones? I.I II.II III.III IV.It will not recruit any zone.

Which of the following concepts apply to zone I under positive pressure ventilation? I.It constitutes shunt. II.In healthy individuals zone I does not exist. III.It constitutes alveolar dead space ventilation. IV.Arterial pressures exceed alveolar pressures.

Which of the following maneuvers can momentarily raise alveolar pressures, creating zone I conditions? I.Coughing II.Blowing a trumpet III.Positive pressure mechanical ventilation IV.Exercise

Why should the balloon of the PAC be left inflated when inserted in the right atrium? I.To decrease the risks of cardiac arrythmias II.To allow blood flow to catch the balloon and carry the catheter forward III.To decrease blood flow in the right atrium and facilitate introduction of the catheter IV.To wedge the catheter

Which of the following conditions are associated with pulmonary edema due to increased hydrostatic pressure? I.Left ventricular failure II.Mitral valve insufficiency III.Hypervolemia IV.ARDS

What is the name of the pressure that is essentially equal to the left ventricular end-diastolic pressure?

Monitoring of a patient with a PAC reveals an elevated PAP due to left heart failure.Which of the following therapies will be specifically directed at decreasing the PAP? I.Oxygen therapy II.Diuretics III.Vasodilators IV.Inotropes

During the insertion of a pulmonary artery catheter, it is observed that the waveform increases in height and that the pressure is about 25/0.Where is the catheter probably located?