Fundamentals of Nursing NCLEX Practice Questions Quiz Set 4 | 75 Questions
1. 1. Question
All of the following can cause tachycardia except:
o A.
... [Show More] Fever
o B. Exercise
o C. Sympathetic nervous system stimulation
o D. Parasympathetic nervous system stimulation
Incorrect
Correct Answer: D. Parasympathetic nervous system stimulation
Parasympathetic nervous system stimulation of the heart decreases the heart rate as well as the force of contraction, rate of impulse conduction and blood flow through the coronary vessels. Fever, exercise, and sympathetic stimulation all increase the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate. Such factors as stress, caffeine, and excitement may temporarily accelerate your heart rate, while meditating or taking slow, deep breaths may help to slow your heart rate.
• Option A: Tachypnea and tachycardia develop, and the patient becomes dehydrated because of sweating and vapor losses from the increased respiratory rate. Many manifestations of fever are related to the increased metabolic rate, increased need for oxygen, and use of body proteins as an energy source.
• Option B: Often, ventricular tachycardia will occur during the recovery period post exercise due to increased levels of adrenaline. In a study conducted in 1991, it was found that 70% of patients tested experienced idiopathic ventricular tachycardia as a result of exercise. Exercising for any duration will increase your heart rate and will remain elevated for as long as the exercise is continued. At the beginning of exercise, your body removes the parasympathetic stimulation, which enables the heart rate to gradually increase. As you exercise more strenuously, the sympathetic system “kicks in” to accelerate your heart rate even more.
• Option C: Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines – epinephrine and norepinephrine) to accelerate the heart rate.
2. 2. Question
Palpating the midclavicular line is the correct technique for assessing:
• A. Baseline vital signs
• B. Systolic blood pressure
• C. Respiratory rate
• D. Apical pulse
Incorrect
Correct Answer: D. Apical pulse
The apical pulse (the pulse at the apex of the heart) is located on the midclavicular line at the fourth, fifth, or sixth intercostal space. Assessing whether the rhythm of the pulse is regular or irregular is essential. The pulse could be regular, irregular, or irregularly irregular. Changes in the rate of the pulse, along with changes in respiration is called sinus arrhythmia. In sinus arrhythmia, the pulse rate becomes faster during inspiration and slows down during expiration. Irregularly irregular pattern is more commonly indicative of processes like atrial flutter or atrial fibrillation.
• Option A: Baseline vital signs include pulse rate, temperature, respiratory rate, and blood pressure. Vital signs are an objective measurement for the essential physiological functions of a living organism. They have the name “vital” as their measurement and assessment is the critical first step for any clinic evaluation. The first set of clinical examinations is an evaluation of the vital signs of the patient.
• Option B: Blood pressure is typically assessed at the antecubital fossa. The arm should be supported at the heart level. Unsupported arm leads to 10 mmHg to the pressure readings. The patient’s blood pressure should get checked in each arm, and in younger patients, it should be tested in an upper and lower extremity to rule out the coarctation of the aorta.
• Option C: Respiratory rate is assessed best by observing chest movement with each inspiration and expiration. The respiratory rate is the number of breaths per minute. The normal breathing rate is about 12 to 20 beats per minute in an average adult. In the pediatric age group, it is defined by the particular age group. Parameters important here again include its rate, depth of breathing, and its pattern rate of breathing is a crucial parameter.
3. 3. Question
The absence of which pulse may not be a significant finding when a patient is admitted to the hospital?
• A. Apical
• B. Radial
• C. Pedal
• D. Femoral
Incorrect
Correct Answer: C. Pedal
Because the pedal pulse cannot be detected in 10% to 20% of the population, its absence is not necessarily a significant finding. However, the presence or absence of the pedal pulse should be documented upon admission so that changes can be identified during the hospital stay. Absent peripheral pulses may be indicative of peripheral vascular disease (PVD). PVD may be caused by atherosclerosis, which can be complicated by an occluding thrombus or embolus. This may be life-threatening and may cause the loss of a limb.
• Option A: Apical pulse rate is indicated during some assessments, such as when conducting a cardiovascular assessment and when a client is taking certain cardiac medications (e.g., digoxin). Sometimes the apical pulse is auscultated pre and post medication administration. It is also a best practice to assess apical pulse in infants and children up to five years of age because radial pulses are difficult to palpate and count in this [Show Less]