Question 1

In sinus rhythms,the QRS complexes should have an interval of ________.

Accepted Answer

The answer of In sinus rhythms,the QRS complexes should have...

Question 2

The primary treatment of sinus tachycardia in a patient with a temperature of 103 degrees would be to ________.

Accepted Answer

The answer of The primary treatment of sinus tachycardia in...

Question 3

Some signs of decreased cardiac output are pallor,hypotension,and dizziness.

Accepted Answer

These are all potential signs of decreased cardiac output, as decreased blood flow to the body can cause a drop in blood pressure, reduced oxygenation of tissues leading to paleness, and can affect blood flow to the brain causing dizziness.

Question 4

The PR interval in sinus rhythms should be ________ from beat to beat.

Accepted Answer

The answer of The PR interval in sinus rhythms should...

Question 5

Sinus arrest is best treated by anti-anxiety medication.

Accepted Answer

Sinus arrest is a medical emergency and requires immediate treatment with interventions such as artificial pacing or medications to increase heart rate, not anti-anxiety medication.

Question 6

Sinus arrest can occur at any heart rate.

Accepted Answer

Sinus arrest refers to a pause in the normal electrical activity of the heart's sinoatrial (SA) node, which is responsible for initiating each heartbeat. This pause can occur at any heart rate, not just at lower rates, and can cause symptoms such as dizziness, fainting, or cardiac arrest if it lasts for a prolonged period.

Question 7

A condition in which the thyroid gland overproduces thyroid hormones and causes the heart rate,temperature,and blood pressure to rise to dangerous levels is called ________.

Accepted Answer

The answer of A condition in which the thyroid gland...

Question 8

The most crucial criterion to identifying sinus rhythms is the upright matching P waves in Lead II.

Accepted Answer

This is true. Sinus rhythms will have upright matching P waves in Lead II, and this is the most important criterion in identifying sinus rhythms.

Question 9

________ is the only normal heart rhythm.

Accepted Answer

The answer of ________ is the only normal heart rhythm....

Question 10

An artificial pacemaker can be used to treat sinus bradycardia.

Accepted Answer

Sinus bradycardia is a condition where the heart beats too slowly, and an artificial pacemaker can be used to help regulate the heart rate.

Question 11

In a sinus arrest,the sinus node________ firing for a time.

Accepted Answer

The answer of In a sinus arrest,the sinus node________ firing...

Question 12

Diaphoresis is a cold sweat.

Accepted Answer

Diaphoresis refers to profuse sweating that may be associated with an intense fever or shock. It is often described as a cold sweat, which means the sweat is produced in response to a sudden drop in body temperature.

Question 13

________ is a rhythm with a heart rate greater than 100.

Accepted Answer

The answer of ________ is a rhythm with a heart...

Question 14

A rhythm with a heart rate less than 60 is ________.

Accepted Answer

The answer of A rhythm with a heart rate less...

Question 15

All sinus rhythms have a P-QRS-T configuration.

Accepted Answer

Sinus rhythms are normal heart rhythms that originate from the sinoatrial (SA) node. They have a P-QRS-T configuration, which represents the electrical activity of the atria (P wave), ventricles (QRS complex), and repolarization of the ventricles (T wave).

Question 16

Patients with a heart rate of 45 always show symptoms of decreased cardiac output.

Accepted Answer

Although a heart rate of 45 is considered bradycardia and may cause symptoms in some patients, not all patients with a heart rate of 45 will necessarily show symptoms of decreased cardiac output. Factors such as age, underlying cardiac conditions, and overall health status can also influence a patient's symptoms.

Question 17

Sinus node impulses result in a P wave that is ________ in Lead II.

Accepted Answer

The answer of Sinus node impulses result in a P...

Question 18

Sinus bradycardia is common among well-conditioned athletes.

Accepted Answer

Well-conditioned athletes often have a lower resting heart rate due to the increased efficiency of their cardiovascular system. This can result in sinus bradycardia, which is a slow heart rate originating from the sinus node. However, if the athlete experiences other symptoms such as dizziness, fainting or chest pain, medical attention should be sought to rule out any underlying issues.

Question 19

Sinus block can occur at any heart rate.

Accepted Answer

Sinus block is a condition where the electrical signals in the sinus node, which is the natural pacemaker of the heart, are delayed or blocked. This can occur at any heart rate, including during rest or physical activity.

Question 20

In sinus rhythms,P waves are found ________ the QRS complexes.

Accepted Answer

The answer of In sinus rhythms,P waves are found ________...

Quiz 7: Rhythms Originating in the Sinus Node