Faculty Marked Assignment 1
Worksheet 2
I. Shock and Its Clinical Signs and Symptoms John is exhibiting signs of cardiogenic shock. Cardiogenic shock is a state of end-organ hypoperfusion due to cardiac failure. The most common causes are serious heart conditions such as myocardial infarction; as stated in the scenario, John’s ECG shows extensive myocardial damage. He likewise had a history of Myocardial infarction 2 years ago which required ICU admission. Patients diagnosed with cardiogenic shock usually exhibit the following symptoms: chest pain, coma, decreased urination, fast breathing, fast pulse, heavy sweating and moist skin, light-headedness, loss of alertness and inability to concentrate, …show more content…
Diagnosis of cardiogenic shock is usually made with the help of pulmonary catheterization. The observed findings of the pulmonary artery catheter of John shows decreased cardiac output (2.3 L/min), increased central venous …show more content…
The underlying pathology of cardiogenic shock is profound depression of contractility resulting in a spiral of reduced cardiac output. As a result of decreased contractility, the patient develops elevated left and right ventricular (RV) filling pressures and a low cardiac output. Decreased cardiac output indicates a decrease in circulating volume or a decrease in the strength of ventricular contraction. SVR (Increased): Systemic vascular resistance is the measurement of resistance or impediment of the systemic vascular bed to blood flow. An increased SVR can be caused by vasoconstrictors, hypovolemia, or late septic shock. In johns case, increased in the SVR further illustrates his clinical status that shows hypovolemia and shock. CVP (Increased): CVP readings are used to approximate the Right Ventricular End Diastolic Pressure (RVEDP). The CVP assesses right ventricular function and general fluid status. High CVP values reflect over hydration, increased venous return or right sided cardiac failure. In John’s case, increase of CVP will be due to right side heart failure. HR (Increased): Due to hypovolemia, the body is trying to compensate for the decrease blood circulating in the body, hence the heart is trying to pump faster than its usual pace to compensate (modulation of neurohormonal mechanisms), which explains the tachycardia noted in Johns