Third degree AV block diagnostic study of choice

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Soroush Seifirad, M.D.[2]

Overview

The Electrocardiogram (ECG) is the gold standard test for the diagnosis of third degree AV block. Nevertheless, it might be normal in patients with transient AV block. A Holter monitoring and/or telemetry must be performed when the patient presents with sign and symptoms which raising concern for complete heart block in the presence of a normal ECG.

Diagnostic Study of Choice

Study of choice

The Electrocardiogram (ECG) is the gold standard test for the diagnosis of third degree AV block.

Nevertheless, it might be normal in patients with transient AV block.

A Holter monitoring and/or telemetry must be performed when:

• The patient presents with sign and symptoms which raising concern for complete heart block such as:
• Syncope
• History of Heart disease
• Risk factors of Heart disease
• Elderly
• History of AV blocking agents in heir manuscript
• History of heart surgery

Investigations:

• Among the patients who present with clinical signs of third degree AV block, the [investigation name] is the most specific test for the diagnosis.
• Among the patients who present with clinical signs of third degree AV block, the [investigation name] is the most sensitive test for diagnosis.
• Among the patients who present with clinical signs of third degree AV block, the [investigation name] is the most efficient test for diagnosis.

The comparison of various diagnostic studies for third degree AV block

Test	Sensitivity	Specificity
Test 1	...%	...%
Test 2	...%	...%

[Name of test with higher sensitivity and specificity] is the preferred investigation based on the sensitivity and specificity

Diagnostic results

The following finding(s) on performing [investigation name] is(are) confirmatory for third degree AV block:

• [Finding 1]
• [Finding 2]

Sequence of Diagnostic Studies

The [name of investigation] must be performed when:

• The patient presented with symptoms/signs 1, 2, and 3 as the first step of diagnosis.
• A positive [test] is detected in the patient, to confirm the diagnosis.

OR

The various investigations must be performed in the following order:

• [Initial investigation]
• [2nd investigation]

Name of Diagnostic Criteria

It is recommended that you include the criteria in a table. Make sure you always cite the source of the content and whether the table has been adapted from another source.

third degree AV block is primarily diagnosed based on clinical presentation. There are no established criteria for the diagnosis of third degree AV block.

OR

There is no single diagnostic study of choice for third degree AV block, though third degree AV block may be diagnosed based on [name of criteria] established by [...].

OR

The diagnosis of third degree AV block is made when at least [number] of the following [number] diagnostic criteria are met: [criterion 1], [criterion 2], [criterion 3], and [criterion 4].

OR

The diagnosis of third degree AV block is based on the [criteria name] criteria, which includes [criterion 1], [criterion 2], and [criterion 3].

OR

third degree AV block may be diagnosed at any time if one or more of the following criteria are met:

• Criteria 1
• Criteria 2
• Criteria 3

OR

IF there are clear, established diagnostic criteria

The diagnosis of third degree AV block is made when at least [number] of the following [number] diagnostic criteria are met: [criterion 1], [criterion 2], [criterion 3], and [criterion 4].

OR

The diagnosis of third degree AV block is based on the [criteria name] criteria, which include [criterion 1], [criterion 2], and [criterion 3].

OR

The diagnosis of third degree AV block is based on the [definition name] definition, which includes [criterion 1], [criterion 2], and [criterion 3].

OR

IF there are no established diagnostic criteria

There are no established criteria for the diagnosis of third degree AV block.