if you suspect atrial flutter : Consider digoxin if not already in use
because it frequently increases the conduction ratio and decreases
the ventricular rate. , Avoid adrenergic and atropinic agents during
sedation or anesthesia for cardioversion. Ketamine is relatively
contraindicatedthe cause of premature ventricular contraction?
decrease O2 supply to the muscle
decrease blood supply to the muscle
the heart trying to beat fast
______________________________

1 Answer

Answer :

decrease O2 supply to the muscle

Related questions

Description : Histamine (a) May be released from mast cells by a number of therapeutic agents (b) Causes sedation (c) Decreases the force of contraction of ventricular muscle (d) Can cause strong contractions of the gravid human uterus

Last Answer : Ans: D

Description : What is the usual response to digoxin in a patient of atrial fibrillation: A. Restoration of normal sinus rhythm B. Conversion of atrial fibrillation to atrial flutter C. Increase in ... decrease in ventricular rate D. Decrease in atrial fibrillation frequency, but increase in ventricular rate

Last Answer : C. Increase in atrial fibrillation frequency, but decrease in ventricular rate

Description : Newborn with 300 bpm , with normal BP , normal RR , what do you will do for newborn : (atrial flutter) imp.  Cardiac Cardiversion  Verpamil  Digoxin  Diltzam iv

Last Answer : Digoxin

Description : Digoxin produces the following effect(s) in atrial flutter: A. Reduces ventricular rate B. Prevents shift of A-V block to a lower grade C. Converts atrial flutter to atrial fibrillation D. All of the above

Last Answer : D. All of the above

Description : Ketamine; all are true except A. Induction of anesthesia by IV route B. Induction of anesthesia … C. Supplementation of sedation... D. Decrease cerebral blood flow

Last Answer : Ans: D

Description : The following are true about cardiac contraction: a. the P wave initiates the atrial contraction b. atrial contribution to ventricular filling is most effective at fast heart rate. c. b wave is generated by atrial contraction d. fourth heart sound occurs during atrial contraction

Last Answer : fourth heart sound occurs during atrial contraction

Description : ­To deffrentiate between sinua arythmia and atrial firbllation a- carotid massage b- Temporal artery massage c- Amidrone d- digoxin

Last Answer : a- carotid massage

Description : Which of the following are not determinants of a postoperative cardiac complication? A. Myocardial infarct 4 months previously. B. Clinical evidence of congestive heart failure in a patient with 8.5 gm ... on electrocardiogram. D. A harsh aortic systolic murmur. E. Age over 70 years.

Last Answer : Answer: B DISCUSSION: Clinical evidence of congestive heart failure in a patient with 8.5 gm. per dl. hemoglobin concentration is a misleading sign. Evidence of congestive ... or ventricular contractions on the electrocardiogram are less strong determinants of a postoperative cardiac complication

Description : Quinidine is now used primarily for (a) Conversion of auricular fibrillation to sinus rhythm (b) Control of ventricular rate in atrial flutter (c) Termination of ventricular tachycardia (d) Prevention of recurrences of atrial and ventricular extrasystoles/tachycardias

Last Answer : Ans: D

Description : Quinidine is now used primarily for: A. Conversion of atrial fibrillation to sinus rhythm B. Control of ventricular rate in atrial flutter C. Termination of ventricular tachycardia D. Prevention of recurrences of atrial fibrillation/ ventricular tachycardia

Last Answer : D. Prevention of recurrences of atrial fibrillation/ ventricular tachycardia

Description : Which of the following terms is used to describe a tachycardia characterized by abrupt onset, abrupt cessation, and a QRS of normal duration? a) Paroxysmal atrial tachycardia PAT ... fibrillation Atrial fibrillation causes a rapid, disorganized, and uncoordinated twitching of atrial musculature.

Last Answer : a) Paroxysmal atrial tachycardia PAT is often caused by a conduction problem in the AV node and is now called AV nodal reentry tachycardia.

Description : Premature ventricular contractions are considered precursors of ventricular tachycardia when they a) occur at a rate of more than six per minute. When PVCs occur at a rate of more than six per minute they ... paired with a normal beat. A PVC that is paired with a normal beat is termed bigeminy.

Last Answer : a) occur at a rate of more than six per minute. When PVCs occur at a rate of more than six per minute they indicate increasing ventricular irritability and are considered forerunners of ventricular tachycardia (VT).

Description : The pacesetter in the heart is called (a) sino-atrial node (SAN) (b) atrio-ventricular node (AVN) (c) Purkinje fibres (d) papillary muscle.

Last Answer : (b) atrio-ventricular node (AVN)

Description : Quinidine has the following action on electrophysiological properties of the heart except: A. Decreases automaticity of Purkinje fibres B. Abolishes after depolarizations C. Prolongs refractory period of atrial fibres D. Decreases membrane responsiveness of atrial and ventricular fibres

Last Answer : B. Abolishes after depolarizations

Description : Stimulation of the cholinergic pathway results in: a. ciliary muscle contraction b. a decrease in atrial contractility c. gall bladder contraction d. all above

Last Answer : all above

Description : A patient has been taking digoxin for several years for chronic heart failure is about to receive atropine for another condition. A common effect of digoxin (at therapeutic blood levels) that can ... Increased atrial contractility (c) Increased PR interval on the ECG (d) Headaches (e) Tachycardia

Last Answer : Ans: C

Description : A patient of CHF was treated with furosemide and digoxin. He became symptom-free and is stable for the last 3 months with resting heart rate 68/min in sinus rhythm but left ventricular ... medication as before C. Continue the diuretic but stop digoxin D. Continue digoxin but stop the diuretic

Last Answer : A. Stop above medication and start an ACE inhibitor

Description : Infusion of potassium chloride is indicated in digitalis toxicity when the manifestation(s) is/are: A. Vomiting, hyperapnoea and visual disturbance B. Pulsus bigeminus with heart rate 110/min ... accidentally ingested 10 digoxin tablets D. 2:1 A-V block with occasional ventricular extrasystoles

Last Answer : B. Pulsus bigeminus with heart rate 110/min in a patient on maintenance digoxin therapy

Description : n a failing heart therapeutic dose of digoxin has no effect on the following parameter: A. Cardiac output B. Heart rate C. Tone of ventricular fibres D. Cardiac vagal tone

Last Answer : C. Tone of ventricular fibres

Description : What is the function of the heart Pacemaker? A. It decreases the heart beat B. It regulates the heart beat C. It increases the heart beat D. It accelerates blood supply to the heart

Last Answer : ANSWER: B

Description : Medical What is the function of the heart Pacemaker? A. It decreases the heart beat B. It regulates the heart beat C. It increases the heart beat D. It accelerates blood supply to the heart

Last Answer : ANSWER: B

Description : Identify the hormone with its correct matching of source and function. (a) Oxytocin - posterior pituitary, growth and maintenance of mammary glands. (b) Melatonin - pineal gland, regulates the ... sex organs. (d) Atrial natriuretic factor - ventricular wall, increases the blood pressure.

Last Answer : (b) Melatonin - pineal gland, regulates the normal rhythm of sleepwake cycle

Description : Drugs that block the a receptor on effector cells at adrenergic nerve endings (a) Antagonize the effects of isoproterenol on the heart rate (b) Antagonize some of the effects of epinephrine on ... the effects of epinephrine on adenylyl cyclase (d) Cause mydriasis (e) Decreases blood glucose levels

Last Answer : Ans: B

Description : -yr old sustained trauma to the chest present with severe short of breath with cyanosis, his rt lung is silent with hyperresonance. The FIRST step to treat this pt: a. O2 mask b. Tube thoracostomy c. CXR _______________

Last Answer : a. O2 mask

Description : Digoxin is contraindicated in: A. Angina pectoris patients B. Ventricular tachycardia C. Hypertensive patients D. Complete heart-block

Last Answer : B. Ventricular tachycardia

Description : The following drug has been demonstrated to retard progression of left ventricular dysfunction and prolong survival of congestive heart failure patients: A. Digoxin B. Furosemide C. Enalapril D. Amrinone

Last Answer : C. Enalapril

Description : "Sodium Pump" operates in - (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above

Last Answer : (3) Nerve impulse Explanation: Na+/K+-ATPase (also known as sodium-potassium pump) is an enzyme located in the plasma them brane of virtually every human cell and is common to all cellular ... are voltagegated, which means that they can open and close depending on the voltage across the membrane.

Description : “Sodium Pump” operates in (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above

Last Answer : Nerve impulse

Description : Quinidine can cause paradoxical tachycardia in a patient of: A. Sick sinus syndrome B. Atrial extrasystoles C. Atrial fibrillation D. Ventricular extrasystoles

Last Answer : C. Atrial fibrillation

Description : yocardial Na+ channel blockade by lignocaine has the following characteristic: A. It blocks inactivated Na+ channels more than activated channels B. It blocks activated Na+ channels more than inactivated ... Na+ channels D. It produces more prominent blockade of atrial than ventricular Na+ channels

Last Answer : A. It blocks inactivated Na+ channels more than activated channels

Description : Which of the following terms indicates the amount of blood pumped out of the ventricle with each contraction of the heart? a) Stroke volume Stroke volume is the amount of blood pumped out ( ... d) Preload Preload is the pressure created by a volume of blood within a ventricle before contraction.

Last Answer : a) Stroke volume Stroke volume is the amount of blood pumped out (ejected) with each contraction of the heart (heart beat). Stroke volume times heart rate equals cardiac output.

Description : Lidocaine is the preferred antiarrhythmic for emergency control of cardiac arrhythmias following acute myocardial infarction because (a) It has a rapidly developing and titratable antiarrhythmic action (b) It casues ... efficacy in atrial as well as ventricular arrhythmias (d) Both (a) and (b)

Last Answer : Ans: D

Description : Lignocaine is the preferred antiarrhythmic for emergency control of cardiac arrhythmias following acute myocardial infarction because: A. It has a rapidly developing and titratable antiarrhythmic action B. It causes ... atrial as well as ventricular arrhythmias D. Both A' and B' are correct

Last Answer : D. Both ‘A’ and ‘B’ are correct

Description : Do you have any funny sedation/anesthesia/pain med stories?

Last Answer : I had IV Demerol and twenty minutes later my son was born. While we waited, I sang Whiter Shade of Pale. Nobody will tell me straight out, as I generally have a fair singing voice, but I'm now ... an epidural with a lovely narc cocktail. Hell yeah, jam that needle in my spine and keep it coming.

Description : What is the Difference Between Sedation and General Anesthesia?

Last Answer : Anesthesia is composed of different classifications that differ from each other depending on the purpose and where to use. Eventually, general anesthesia and sedation are part of it and are commonly ... , danforth dental clinic, 3d ct scan, toronto sedation dentistry, toronto dentist, teeth whit

Description : Atrial fibrillation/flutter?

Last Answer : DefinitionAtrial fibrillation/flutter is a heart rhythm disorder (arrhythmia). It usually involves a rapid heart rate that is not regular.Alternative NamesAuricular fibrillation; A-fibCauses, incidence, and risk ... leaves the SA node and travels through the two upper chambers (atria).Then the sign

Description : Which of the following drugs is a class III antiarrhythmic agent that is effective in the acute management of atrial fibrillation or atrial flutter of recent onset ? (a) Bretylium (b) Lbutilide (c) Metoprolol (d) Disopyramide

Last Answer : Ans: B

Description : Tachycardia is a condition characterized by (1) heart-rate decreases from the normal (2) heart- rate increases from the normal (3) heart-beat stops (4) heart fails to pump

Last Answer : (2) heart- rate increases from the normal Explanation: Tachycardia is a heart rate that exceeds the nor-mal resting rate. In general, a resting heart rate over 100 beats per minute is ... a person is at rest. Tachycardia occurs when an abnormality in the heart produces rapid electrical signals.

Description : Tachycardia is a condition characterized by (1) heart-rate decreases from the normal (2) heart- rate increases from the normal (3) heart-beat stops (4) heart fails to pump

Last Answer : heart- rate increases from the normal

Description : Which statement is correct for muscle contraction? (a) Length of H-zone decreases. (b) Length of A-band remains constant. (c) Length of I-band increases. (d) Length of two Z-line increases.

Last Answer : (b) Length of A-band remains constant.

Description : ____________ rate is the ratio for exchange of two currencies.

Last Answer : Exchange,

Description : 67­Which antiviral drug causes fever and muscle pain: Acyclovir Oseltamivir Interferon Gancyclovir

Last Answer : Interferon

Description : patient with bed sore involve skin and extend to fascia and muscle what a grade Grade1 Grade 2 Grade 3 Grade 4

Last Answer : Grade 4

Description : Digoxin given for cardiac failure is extremely valuable in patients of (a) Thyrotoxicosis (b) Beriberi (c) Cor pulmonale (d) Atrial fibrillation

Last Answer : Ans: D

Description : The most effective drug for prevention of stroke in atrial fibrillation patients is: A. Aspirin B. Warfarin C. Low dose subcutaneous heparin D. Digoxin

Last Answer : B. Warfarin

Description : Long-term maintenance therapy with digoxin is the best option in the following category of CHF patients: A. Hypertensive patients B. Patients with hypertrophic cardiomyopathy C. Patients with associated atrial fibrillation D. Patients having cardiac valvular defects

Last Answer : C. Patients with associated atrial fibrillation

Description : What is true about hormonal contraception? Decrease breast Ca Decrease ovarian Ca Contraindecated in diabetic women Increase risk of ectopic pregnancy

Last Answer : Decrease ovarian Ca