Week 3 PATHO 370 Check Your Understanding

Rheumatic heart disease is most often a consequence of

B-hemolytic streptococcal infection

Mitral stenosis is associated with

a pressure gradient across the mitral valve

Lactated Ringer solution and normal saline are commonly used crystalloid solutions that contain electrolytes.

true

The ingestion of certain drugs, foods, or chemicals can lead to secondary hypertension.

true

What results when systemic blood pressure is increased?

vasoconstriction

The effect of nitric oxide on systemic arterioles is

vasodilation

A patient who reports dizziness and who has absent P waves, wide QRS complexes, and a heart rate of 38 beats/minute on an ECG is most likely in which rhythm?

ventricular escape rhythm

An example of an acyanotic heart defect is

ventricular septal defect

The majority of cardiac cells that die after myocardial infarction do so because of

apoptosis

Patent ductus arteriosus is accurately described as a(n)

communication between the aorta and the pulmonary artery

A patient with pure left-sided heart failure is likely to exhibit

pulmonary congestion with dyspnea

Sepsis has been recently redefined as

systemic inflammatory response to infection

Which blood pressure reading is considered to be indicative of prehypertension according to the JNC-7 criteria?

128/82

The most reliable indicator that a person is experiencing an acute myocardial infarction (MI) is

ST-segment elevation

A patient is exhibiting severe dyspnea and anxiety. The patient also has bubbly crackles in all lung fields with pink, frothy sputum. This patient is most likely experiencing

acute cardiogenic pulmonary edema

Myocarditis should be suspected in a patient who presents with

acute onset of left ventricular dysfunction

high blood pressure increases the workload of the left ventricle, because it increases

afterload

Massive release of histamine with consequent vasodilation and hypotension occurs with what type of shock?

anaphylactic

The majority of cases of anaphylactic shock occur when a sensitized individual comes in contact with

antibiotics

Patients presenting with symptoms of unstable angina and no ST segment elevation are treated with

antiplatelet drugs

In which dysrhythmias should treatment be instituted immediately?

atrial fibrilation with a ventricular rate of 220 beats/minute

Tachycardia is an early sign of low cardiac output that occurs because of

baroreceptor activity

A middle-aged patient has a follow up visit for a recorded blood pressure of 162/96 mm Hg taken 3 weeks ago. The patient has no significant past medical history and takes no medications, but smokes 1 1/2 packs of cigarettes per day, drinks alcohol regularly, and exercises infrequently. The patient is about 40 lbs. overweight and admits to a high-fat, high-calorie diet. At the office visit today, the patient's blood pressure is 150/92 mm Hg. What is the least appropriate intervention for this patient at this time?

begin antihypertensive drug therapy

Hypotension, distended neck veins, and muffled heart sounds are classic manifestations of

cardiac tamponade

Low cardiac output in association with high preload is characteristic of ________ shock.

cardiogenic

Patients with structural evidence of heart failure who exhibit no signs or symptoms are classified into which New York Heart Association heart failure class?

class I

In which stage of shock is a patient who has lost 1200 mL of blood, who has normal blood pressure when supine, but who experiences orthostatic hypotension upon standing?

class II, compensated stage

After being diagnosed with hypertension, a patient returns to the clinic 6 weeks later. The patient reports "moderate" adherence to the recommended lifestyle changes and has experienced a decreased from 165/96 to 148/90 mm Hg in blood pressure. What is the most appropriate intervention for this patient at this time?

continue lifestyle modifications only

Angiotensin-converting enzyme (ACE) inhibitors block the

conversion of angiotensin I to angiotensin II

Administration of which therapy is most appropriate for hypovolemic shock?

crystalloids

Administration of a vasodilator to a patient in shock would be expected to

decrease left ventricular afterload

Primary treatment for myocardial infarction (MI) is directed at

decreasing myocardial oxygen demands

Aortic regurgitation is associated with

diastolic murmur

The therapy that most directly improves cardiac contractility in a patient with systolic heart failure is

digitalis

Increased preload of the cardiac chambers may lead to which patient symptom?

edema

A patient is diagnosed with heart failure with normal ejection fraction. This patient is most likely characterized by a(n)

elderly woman without a previous history of MI

Improvement in a patient with septic shock is indicated by an increase in

systemic vascular resistance

Pulse pressure is defined as

systolic pressure - diastolic pressure

Which serum biomarker(s) are indicative of irreversible damage to myocardial cells?

elevated CK-MB, troponin I, and troponin T

A patient is diagnosed with cardiogenic shock. The patient is hyperventilating and is therefore at risk for the respiratory complication of respiratory acidosis.

false

A type of shock that includes brain trauma that results in depression of the vasomotor center is cardiogenic.

false

Chronic elevation of myocardial wall tension results in atrophy.

false

New-organ damage is a function of both the stage of hypertension and its duration.

false

The most commonly recognized outcome of hypertension is pulmonary disease.

false

In contrast to all other types of shock, the hyperdynamic phase of septic shock is associated with

high cardiac output

A patient presents to the emergency department with a diastolic blood pressure of 132 mm Hg, retinopathy, and symptoms of an ischemic stroke. This symptomology is likely the result of

hypertensive crisis

A patient has a history of falls, syncope, dizziness, and blurred vision. The patient's symptomology is most likely related to

hypotension

Constrictive pericarditis is associated with

impaired cardiac filling

Lusitropic impairment refers to

impaired diastolic relaxation

While hospitalized, an elderly patient with a history of myocardial infarction was noted to have high levels of low-density lipoproteins (LDLs). What is the significance of this finding?

increased LDL levels are associated with increased risk of coronary artery disease

An elderly patient's blood pressure is measured at 160/98. How would the patient's left ventricular function be affected by this level of blood pressure?

left ventricular workload is increased with high afterload

Second-degree heart block type I (Wenckebach) is characterized by

lengthening PR intervals and dropped P wave

Critically ill patients may have parenterally administered vasoactive drugs that are adjusted according to their _____ pressure.

mean arterial

A loud pansystolic murmur that radiates to the axilla is most likely a result of

mitral regurgitation

The progressive stage of hypovolemic shock is characterized by

tachycardia

What compensatory sign would be expected during periods of physical exertion in a patient with limited ventricular stroke volume?

tachycardia

Tumor necrosis factor α and interleukin-1 contribute to shock states because they induce production of

nitric oxide

The prevalence of high blood pressure is higher in

non-hispanic black adults

A patient who was involved in a fall from a tree becomes short of breath. The lung sounds are absent on one side. This patient is experiencing ________ shock.

obstructive

Hypertension is closely linked to

obstructive sleep apnea

A patient with heart failure who reports intermittent shortness of breath during the night is experiencing

paroxysmal nocturnal dyspnea

Hypotension associated with neurogenic and anaphylactic shock is because of

peripheral pooling of blood

An erroneously low blood pressure measurement may be caused by

positioning the arm above the heart level

Which dysrhythmia is thought to be associated with reentrant mechanisms?

preexcitation syndrom tachycardia (wolf-parkinson-white syndrome)

An abnormally wide (more than 0.10 second) QRS complex is characteristic of

premature ventricular complexes

Angina caused by coronary artery spasm is called _____ angina.

prinzmetal variant

First-degree heart block is characterized by

prolonged PR interval

Left-sided heart failure is characterized by

pulmonary congestion

Hypertrophy of the right ventricle is a compensatory response to

pulmonary stenosis

Beta-blockers are advocated in the management of heart failure because they

reduce cardiac output

Cardiogenic shock is characterized by

reduced cardiac output

The common denominator in all forms of heart failure is

reduced cardiac output

The majority of tachydysrhythmias are believed to occur because of

reentry mechanisms

Low cardiac output to the kidneys stimulates the release of _____ from juxtaglomerular cells.

renin

After sitting in a chair for an hour, an elderly patient develops moderate lower extremity edema. His edema is most likely a consequence of

right-sided heart failure

Disseminated intravascular coagulation is a serious complication of septic shock characterized by abnormal clot formation in the microvasculature throughout the body.

true

Atherosclerotic plaques with large lipid cores are prone to

rupture

Hypertension with a specific, identifiable cause is known as _____ hypertension.

secondary

A patient presenting with fever, hypotension, and lactic acidosis is most likely to be experiencing what type of shock?

septic

A patient with cold and edematous extremities, low cardiac output, and profound hypotension is likely to be experiencing a progressive stage of ________ shock.

septic

overproduction of nitric oxide is an important aspect of the pathophysiologic process of what type of shock?

septic

A laboratory test that should be routinely monitored in patients receiving digitalis therapy is

serum potassium

Which finding is indicative of orthostatic hypotension in a person with a supine blood pressure (BP) of 110/70 and a heart rate (HR) of 100?

sitting BP 88/60, HR 118

Restriction of which electrolytes is recommended in the management of high blood pressure?

sodium

A patient with a history of myocardial infarction continues to complain of intermittent chest pain brought on by exertion and relieved by rest. The likely cause of this pain is

stable angina

A patient with significant aortic stenosis is likely to experience

syncope