Emergency Medical Technician (EMT) Practice Test

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Which condition results in diminished heart pumping ability, hindering blood flow due to bent great vessels?

  1. Blood in chest; bleeding in pleural space forming a pocket of blood at bases of lung; decreased lung expansion

  2. Respiratory distress; dropping bp; jdv, tracheial deviation is a late sign; 3 side occlusive dressing

  3. Hearts pumping ability is diminished; great vessels are bent and blood flow is hindered

  4. Air between pleural linings; lungs cant fully inflate leading to a collapsed lung

The correct answer is: Hearts pumping ability is diminished; great vessels are bent and blood flow is hindered

The correct answer is focused on the specific mechanism that diminishes the heart's ability to pump effectively. When the great vessels are bent, this can restrict blood flow and impact the overall cardiac output. This situation typically arises from conditions such as a tension pneumothorax or a significant traumatic injury. The heart's efficiency in circulating blood is crucial for maintaining adequate oxygen delivery to tissues; thus, any hindrance to its pumping ability can lead to severe complications. In contrast, the other options describe different pathological states that do not primarily address the direct relationship between bent great vessels and diminished heart function. For instance: - One choice discusses blood accumulation in the pleural space, which can lead to decreased lung expansion but does not specifically address the impact on the heart's pumping ability or the orientation of the great vessels. - Another option mentions respiratory distress and tracheal deviation, which could indicate a range of conditions but again does not connect directly to how this affects heart function due to bent great vessels. - The final choice concerns air in the pleural space and potential lung collapse; while this can lead to respiratory issues, it does not directly relate to the bending of great vessels or its effect on heart pumping capability. Understanding the explicit relationship between the structural

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