Loading....
Coupon Accepted Successfully!

Medicine

Open Flashcards

Cardiology

Question
26 out of 57
 

A patient develops sudden palpitation with HR 150 / min, regular. What could be the cause? (AIIMS May 2011)



A PSVT
B Sinus tachycardia

C Ventricular tachycardia
D Atrial flutter with block

Ans. A

PSVT

Paroxysmal supraventricular tachycardia (PSVT) is an occasional rapid heart rate.

Causes:

1. PSVT can be initiated in the SA node, In the atria, in the atrial conduction pathways, or other areas.

2. PSVT can occur with digitalis toxicity and conditions such as Wolff-Parkinson-White syndrome.

3. The condition occurs most often in young people and infants.

The following increase risk for PSVT:

1. Alcohol use

2. Caffeine use

3. Illicit drug use

4. Smoking

Symptoms

1. Anxiety

2. Rapid pulse

3. Dizziness

4. Chest tightness

5. Shortness of breath

6. Fainting

7. Palpitations (a sensation of feeling the heart beat)

8. Polyuria

Signs and tests

1. The heart rate may be 150 to 250 beats per minute (bpm).

2. An ECG during symptoms shows PSVT.

3. An electrophysiology study (EPS) is often necessary for an accurate diagnosis and to recommend the best treatment.

Treatment

The Valsalva maneuver can be used to interrupt the fast heartbeat.

Emergency treatment of PSVT may include:

1. Adenosine and verapamil.

2. Other may be used, such as procainamide, beta-blockers, and propafenone.

3. Electrical cardioversion, to restore a rapid heartbeat back to normal.

Long-term treatment of PSVT may include:

1. Propafenone, flecainide, moricizine, sotalol, and amiodarone.

2. Pacemakers to override the fast heartbeat; very occasionally used in children with PSVT who have not responded to any other treatment.

3. Radiofrequency catheter ablation; currently the treatment of choice for most PSVTs.

Complications

The main complication is an increased risk of heart failure.

Cardiology Flashcard List

57 flashcards
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)
17)
18)
19)
20)
21)
22)
23)
24)
25)
26)
27)
28)
29)
30)
31)
32)
33)
34)
35)
36)
37)
38)
39)
40)
41)
42)
43)
44)
45)
46)
47)
48)
49)
50)
51)
52)
53)
54)
55)
56)
57)