FORTINBERRY CH1 Flashcards
The sinoatrial node is located in what chamber of the heart?
A. Leftatrium
B. Right atrium
C. Leftventricle
D. Right ventricle
Right atrium
The sinoatrial node is located in the right atrium of the heart. It serves as the pacemaker for the heart. Impulses generated there are passed on from right to left and inferiorly to the atrioventricular node in the lower end of the interatrial septum.
Where in the tissues does nutrient exchange take place?
A. Capillaries
B. Interstitial spaces
C. Arterioles
D. Venules
Interstitial spaces
The vessels of the various sizes provides transmission conduits for body fluids, but the exchange described takes place between cell surfaces and the interstitial fluid.
During which phase of the cardiac cycle is ventricular volume the lowest?
A. Atrial systole
B. Isovolumetric ventricular contraction
C. At the onset of rapid ventricular ejection
D. Isovolumetric ventricular relaxation
Isovolumetric ventricular relaxation
During the isovolumetric ventricular relaxation phase, all of the ventricular volume has been ejected. The semilunar and AV valves are closed, and no volume is changing in the ventricles. This phase has the lowest volume.
The heart contains a variety of different types of muscle fibers, each with a different frequency of spontaneous contraction. Which of the following has the shortest period (highest frequency) of spontaneous contraction?
A. Purkinje fibers
B. SA node
C. AV node
D. Myocardium
SA node
The SA node has a frequency of 70 to 80 depolarization per minute: the AV node frequency is 40 to 60; and the purkinje cell frequency is 15 to 40; the myocardium is even slower. This question refers to how often these fibers will have action potentials, not haw fast they travel.
Stimulation of CN X will cause which of the following effects?
A. Atrial fibrillation
B. Sinus bradycardia
C. Cardiac rigor
D. Ventricular fibrillation
Sinus bradycardia
Cranial nerve X stimulation causes
bradycardia by inhibiting automaticity of the SA node. Tachycardia effects are caused by inhibiting, not stimulating, the vagus. Cardiac rigor is a consequence of hypercalcemia and causes the heartto stop in systolic
The volume of air moved going from full forced expiration to full forced inspiration is known as
A. Inspiratory capacity
B. Vital capacity
C. Total lung capacity
D. Inspiratory reserve volume
Vital capacity
Inspiratory capacity is the volume of air moved going from normal expiration to full forced inspiration. Total lung capacity is the volume of air in the lung on full forced inspiration and cannot be measured on spirometiv. Inspiratorv reserve volume is the volume or air moved going from normal inspiration to full forced inspiration
During periods of intense physical activity, many physiologic adaptations occur, especially in the circulatory system. Which of the following occurs during increased physical exertion?
A. Increased ventricular refilling, secondary to increased venomotor tone
B. Decreased cardiac output
C. Decreased stroke volume
D. Increased cardiac cycle time
Increased ventricular refilling, secondary to increased venomotor tone
Cardiac output and stroke volume both increase during exertion. Increase cardiac cycle time is just another way of saying the heart beating is slower, which is the opposite of what occurs with exertion.
Which of the following is indicative of left heart failure?
A. Pitting pedal edema
B. Neck vein distention
C. Orthopnea
D. Ascites
Orthopnea
Orthopnea, which is dyspnea in the recumbent position, is a typical symptom of chronic left heart failure. All of the other symptoms and signs are due to right heart failure.
A patient asks the therapist to explain the function of his medication verapamil (a calcium antagonist. Which of the following points should be conveyed in the therapist’s explanation?
A. Verapamil causes decreased contractility of the heart and vasodilation of the coronary arteries.
B. Verapamil causes decreased contractility of the heart and vasoconstriction of the coronary arteries.
C. Verapamil causes increased contractility of the heart and vasodilation of the coronary arteries.
D. Verapamil causes increased contractility of the heart and vasoconstriction of the coronary arteries.
Verapamil causes decreased contractility of the heart and vasodilation of the coronary arteries.
Verapamil reduces contractility of the heart and increases coronary artery dilation, resulting in decreased cardiac workload and increased blood flow to the heart muscle.
The protocol for a cardiac patient states that the patient should not exceed 5 metabolic equivalents (METs) with any activity at this stage of recovery. Which of the following activities would be inappropriate for the patient?
A. Cycling 11 mph
B. Walking 4 mph
C. Driving a car
D. Weeding a garden
Cycling 11 mph
Cycling 11 mph is approximately 6 to 7
METs. Walking 4 mph is approximately 4.6
METs. Driving a car is approximately 2 METs.
Weeding a garden is approximately 3 to 5 METs.
During the opening of a patient’s mouth, a palpable and audible click is discovered in the left temporomandibular joint. The physician informs the therapist that the patient has an anteriorly dislocated disk. This click most likely signifies that
A. The condyle is sliding anteriorly to obtain normal relationship with the disk
B. The condyle is sliding posteriorly to obtain normal relationship with the disk
C. The condyle is sliding anteriorly and losing normal relationship with the disk
D. The condyle is sliding posteriorly and losing normal relationship with the disk
The condyle is sliding anteriorly to obtain normal relationship with the disk
In the case of a reciprocal click, the initial click is created by the condyle slipping back into the correct position under the disk with opening of the mouth. In this disorder, the condyle is resting posterior to the disk before jaw opening. With closing, the click is caused by the condyle slipping away from the disk.
In what position should the therapist place the upper extremity to palpate the supraspinatus tendon?
A. Full abduction, full flexion, and full external rotation
B. Full abduction, full flexion, and full internal rotation
C. Full adduction, full external rotation, and full extension
D. Full adduction, full internal rotation, and full extension
Full adduction, full internal rotation, and full extension
The supraspinatus tendon is best
palpated by placing the patient’s involved upper extremity behind the back in full internal rotation.
A 13-year-old girl has fractured the left patella during a volleyball game. The physician determines that the superior pole is the location of the fracture. Which of the following should be avoided in earl rehabilitation?
A. Full knee extension
B. 45 degrees of knee flexion
C. 90 degrees of knee flexion
D. 15 degrees of knee flexion
90 degrees of knee flexion
The superior pole is in most contact at approximately 90 degrees of knee flexion.
During conference with the physical therapist, a respiratory therapist indicates that the patient has a low expiratory reserve volume. What does this mean?
A. The volume of air remaining in the lungs after a full expiration is low.
B. The volume of air in a breath during normal breathing is low.
C. The volume of air forcefully expired after a forceful inspiration is low.
D. The amount of air expired after a resting expiration is low.
The amount of air expired after a resting expiration is low.
Choice D describes an expiratory
reserve volume. Choice A is residual volume, choice B is tidal volume, and choice C is vital capacity.
During an evaluation a 74-year-old woman informs you that she is “taking a heart pill.” The patient does not have her medication with her but states that the medication “slows down my heart rate.” Which of the following is the most probable medication?
A. Epinephrine
B. Digitalis
C. Quinidine
D. Norepinephrine
Quinidine
Epinephrine, digitalis, and
norepinephrine increase heart rate. Quinidine is an antiarrhythmic drug.
A patient is referred to physical therapy with a secondary diagnosis of hypertension. The physician has ordered relaxation training. The therapist first chooses to instruct the patient in the technique of diaphragmatic breathing.
Which of the choices is the correct set of instructions?
A. Slow the breathing rate to 8 to 12 breaths perminute, increase movement of the upper chest, and decrease movement in the abdominal region.
B. Slow the breathing rate to 12 to 16 breaths perminute, increase movement of the abdominal region, and decrease movement in the upper chest.
C. Slow the breathing rate to 8 to 12 breaths per minute, increase movement of the abdominal region, and decrease movement in the upper chest.
D. Slow the breathing rate to 12 to 16 breaths per minute, increase movement of the upper chest, and decrease movement in the abdominal region.
Slow the breathing rate to 8 to 12 breaths per minute, increase movement of the abdominal region, and decrease movement in the upper chest.
Choice C provides correct instructions.
The patient is often instructed to begin this technique in the supine position and progress to the sitting position. This technique should be practiced for approximately 5 minutes several times per day.
Which of the following statements about cardiovascular response to exercise in trained and/or sedentary patients is false?
A. If exercise intensities are equal, the sedentary patient’s heart rate will increase faster than the trained patient’s heart rate.
B. Cardiovascular response to increased workload will increase at the same rate for sedentary patients as it will for trained patients.
C. Trained patients will have a larger stroke volume during exercise.
D. The sedentary patient will reach anaerobic threshold faster than the trained patient if workloads are equal.
Cardiovascular response to increased workload will increase at the same rate for sedentary patients as it will for trained patients.
The sedentary patient’s cardiovascular response increases faster than the trained patient’s if the workloads are equal.
A therapist is asked to examine a patient in the intensive care unit. The patient is comatose but breathing independently. During the assessment of range of motion in the right upper extremity, the therapist notices that the patient is breathing unusually. The pattern is an increase in breathing rate and depth followed by brief pauses in breathing. The therapist should notify the appropriate personnel that the patient is exhibiting which of the following patterns?
A. Biot’s respiration
B. Cheyne-Stokes respiration
C. Kussmaul’s respiration
D. Paroxysmal nocturnal dyspnea
Cheyne-Stokes respiration
The pattern described in the question: a
gradual increase in the rate and depth of respirations followed by periods of absent breathings known as Cheyne-Stokes breathing,
Small breaths followed by inconsistent periods of absent breathing are known as a Biot’s breathing pattern. Deep gasping breaths are known as a Kussmaul’s breathing pattern.
Awakening during the night because of periods of absent breathing is known as paroxysmal nocturnal dyspnea.
Which of the following statements is not a common physiologic change of aging?
A. Blood pressure taken at rest and during exercise increases.
B. Maximal oxygen uptake decreases.
C. Residual volume decreases.
D. Bone mass decreases.
Residual volume decreases.
Residual volume, the amount of air left in the lungs after a forceful expiration, increases with age.
A patient with cardiac arrhythmia is referred to physical therapy services for cardiac rehabilitation. The therapist is aware that the heart receives nerve impulses that begin in the sinoatrial node of the heart and then proceed to the
A. Atrioventricular node, then to the Purkinie fibers, and then to the bundle branches
B. Purkinie fibers, then to the bundle branches, and then to the atrioventricular node
C. Atrioventricularnode, then to the bundle branches, and then to the Purkinie fibers
D. Bundle branches, then to the atrioventricular node, and then to the Purkinie fibers
Atrioventricularnode, then to the bundle branches, and then to the Purkinie fiber
The heart receives nerve impulses that travel through the sinoatrial node to the ventricles by way of the atrioventricular node, bundle branches, and Purkinie fibers.
A 65-year-old man is scheduled to begin a wellness program. He has no cardiovascular disease, major svstemic illness, or musculoskeletal abnormality. However, he is deconditioned because of an extremely sedentary lifestyle. Resting heart rate is 90 beats minute, and resting blood pressure is 145/92 mm Hg. Which of the choices describes the most correct intensity, frequency, and duration at which the patient should begin exercise?
A. 75Vo2max: 30 min/day: 3 days/wk
B. 40Vo2 max; 30 min/ day; 5 days/wk
C. 40 Vo2 max: 10 minutes twice dailv: 5 davs /wk
D. 75 Vo 2max; 10 minutes twice daily: 3 days/wk
40 Vo2 max: 10 minutes twice dailv: 5 davs /wk
Deconditioned people benefit initially from low-intensity exercise with multiple sessions per day and perweek.
A 17-year-old athlete has just received a posterior cruciate ligament reconstruction. The therapist is attempting to explain some of the characteristics of the posterior cruciate ligament. Which of the following is incorrect information?
A. The posterior cruciate ligament prevents posterior translation of the tibia on the femur.
B. Posterior bands of the posterior cruciate ligament are their tightest in full knee extension.
C. The posterior cruciate ligamentis attached to the lateral meniscus and not to the medial meniscus.
D. The posterior cruciate ligament helps with medial rotation of the tibia during full knee extension with open-chain activities.
The posterior cruciate ligament helps with medial rotation of the tibia during full knee extension with open-chain activities.
The posterior cruciate ligament becomes tight in full knee extension. This assists the tibia in external rotation, which is needed for the screw home mechanism with open-chain activities.
A patient starting to use antihypertensive medications must be observed when getting up or leaving a warm therapeutic pool in order to avoid an episode of
A. Bradycardia
B. Orthostatic hypotension
C. Dysrhythmias
D. Skeletal muscle weakness
Orthostatic hypotension
Antihypertensive medication may cause a sharp drop in blood pressure when getting up quickly or leaving a warm pool, which causes vasodilation. This is most evident at the beginning of therapy. Patients must be supervised and warned to get up slowly, to hold on to something firm, and to sit down when leaving the pool.
A patient whose exercise-induced heart rate is less than the heart rate was before exercise is most likely starting therapy with
A. Anticholinergic drugs
B. Alphablockers
C. Betablockers
D. Antianginals
Betablockers
Beta blockers block the beta receptors on the heart; they also block sympathetic nerve impulses and reduce heart rate and contractility.
The other drugs have no effects, or they might increase heart rate.