A nurse is providing care for a client following a cardiac arrest due to pulseless electrical activity (PEA). Which of the following alterations are causes of PEA? (Select All that Apply.)
Hypertension
Hypovolemia
Hypoxia
Hyperkalemia
Hypernatremia
Hyperthermia
Correct Answer : B,C,D
Pulseless electrical activity (PEA) refers to a situation in which an electrocardiogram (ECG) shows electrical activity in the heart, but there is no effective mechanical activity and no palpable pulse. PEA can result from various underlying conditions that impair cardiac function or compromise circulation.
A. Hypertension: Hypertension, or high blood pressure, is not typically a direct cause of PEA. While uncontrolled hypertension can contribute to cardiovascular disease and increase the risk of cardiac events such as myocardial infarction, it is not a direct cause of PEA.
B. Hypovolemia: Hypovolemia, or low blood volume, is a common cause of PEA. Reduced circulating blood volume leads to decreased preload and inadequate filling of the heart chambers, impairing cardiac output. This can result in ineffective cardiac contractions and the development of PEA.
C. Hypoxia: Hypoxia, or inadequate oxygenation of tissues, is a significant cause of PEA. Insufficient oxygen delivery to the myocardium impairs cardiac function and can lead to ineffective cardiac contractions. Without adequate oxygenation, the heart is unable to generate sufficient mechanical force to maintain circulation, resulting in PEA.
D. Hyperkalemia: Hyperkalemia, or elevated levels of potassium in the blood, can cause PEA by disrupting cardiac electrical activity. Excessive potassium ions in the extracellular fluid alter the normal myocardial action potential, leading to cardiac conduction abnormalities and potential arrhythmias, including PEA.
E. Hypernatremia: Hypernatremia, or elevated levels of sodium in the blood, is not typically a direct cause of PEA. While severe hypernatremia can lead to neurological symptoms and dehydration, it does not directly impair cardiac electrical activity or mechanical function to the extent that it causes PEA.
F. Hyperthermia: Hyperthermia, or elevated body temperature, is not typically a direct cause of PEA. While extreme hyperthermia can lead to cardiovascular complications such as heat stroke, it is not a common cause of PEA unless it is associated with severe systemic metabolic derangements.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Lie on your back when sleeping: Lying on the back when sleeping may be recommended initially after cochlear implant surgery to avoid putting pressure on the surgical site. However, this instruction should not be included in the plan of care indefinitely. Once the client is comfortable and the surgical site is healing well, they should be allowed to sleep in any position that is comfortable for them.
B. Lie on your front when sleeping: Lying on the front when sleeping is not typically recommended after cochlear implant surgery, as it may put pressure on the surgical site and disrupt healing. This position could potentially cause discomfort and increase the risk of complications. Therefore, this instruction should not be included in the plan of care.
C. Resume your exercise routine: Resuming the exercise routine immediately after cochlear implant surgery may not be advisable. The client should be instructed to avoid strenuous activities and heavy lifting for a certain period as advised by the healthcare provider. Engaging in vigorous exercise too soon after surgery could potentially disrupt the healing process and increase the risk of complications. Therefore, this instruction should not be included in the plan of care immediately after surgery.
D. Wash your hair 24 hr after surgery: After cochlear implant insertion, it is important to keep the surgical site clean to prevent infection. Washing the hair 24 hours after surgery helps to maintain cleanliness and hygiene without disrupting the surgical site. It is typically safe to wash the hair after this period as long as gentle care is taken to avoid excessive manipulation of the implant site.
Correct Answer is C
Explanation
A. Marfan's syndrome: Marfan's syndrome is a genetic disorder that affects the connective tissue in the body, predisposing individuals to various cardiovascular, skeletal, and ocular abnormalities. While Marfan's syndrome can present with certain cranial and intracranial manifestations, such as dural ectasia and intracranial aneurysms, it is not typically considered a direct risk factor for traumatic brain injury (TBI).
B. Hypercarbia: Hypercarbia refers to elevated levels of carbon dioxide (CO2) in the blood. While severe hypercarbia can lead to cerebral vasodilation and potentially exacerbate intracranial pressure in individuals with traumatic brain injury, it is not considered a direct risk factor for TBI itself.
C. Falls: Falls are a significant risk factor for traumatic brain injury (TBI), particularly in older adults and young children. Falls can occur due to various factors such as environmental hazards, impaired mobility, balance issues, or neurological conditions. Falls are a leading cause of TBI-related emergency department visits, hospitalizations, and fatalities.
D. Ventriculostomy: Ventriculostomy involves the placement of a catheter into the ventricular system of the brain to monitor intracranial pressure (ICP) or drain cerebrospinal fluid (CSF). While ventriculostomy is a procedure commonly performed in the management of severe traumatic brain injury to monitor and manage intracranial pressure, it is not a risk factor for TBI itself.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.