Evidence map›Paper›PMID 9616348›Full record

ArticleHeart (British Cardiac Society)1998

Ventricular pacemaker upgrade: experience, complications and recommendations.

D J Hildick-Smith, M D Lowe, S A Newell, P M Schofield, L M Shapiro, D L Stone, A A Grace, M C Petch

Abstract read
In one paragraph

Article in Heart (British Cardiac Society), 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Pacemaker insertion.Annals of translational medicine · 2015
    Article
  4. Pneumothorax resulting from subclavian puncture: a complication of permanent pacemaker lead implantation.Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation · 2004
    Article
  5. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

D J Hildick-SmithDepartment of Cardiology, Papworth Hospital, Cambridge, UK.
M D Lowe
S A Newell
P M Schofield
L M Shapiro
D L Stone
A A Grace
M C Petch

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo assess outcomes of pacemaker upgrade from single chamber ventricular to dual chamber.

designRetrospective analysis of patients undergoing the procedure.

settingSpecialist cardiothoracic unit. PATIENTS: 44 patients (15 female, 29 male), mean (SD) age at upgrade 68.2 (12.9) years.

interventionsUpgrade of single chamber ventricular to dual chamber pacemaker.

main outcome measuresProcedure duration and complications.

resultsPrincipal indications for upgrade were pacemaker syndrome (17), "opportunistic"--that is, at elective generator replacement (8), heart failure (7), non-specific breathlessness/fatigue (7), and neurally mediated syncope (3). Mean (SD) upgrade procedure duration (82.9 (32.6) minutes) significantly exceeded mean VVI implantation duration (42.9 (13.3) minutes) and mean DDD implantation duration (56.6 (22.7) minutes) (both p < 0.01). Complications included pneumothorax (1), ventricular arrhythmia requiring cardioversion (2), protracted procedure (10), atrial lead repositioning within six weeks (8), haematoma evacuation (1), superficial infection (1), and admission to hospital with chest pain (1); 20 patients (45%) suffered one or more complications including four of the eight who underwent opportunistic upgrade.

conclusionsPacemaker upgrade takes longer and has a higher complication rate than either single or dual chamber pacemaker implantation. This suggests that the procedure should be performed by an experienced operator, and should be undertaken only if a firm indication exists. Patients with atrial activity should not be offered single chamber ventricular systems in the belief that the unit can be upgraded later if necessary at minimal risk.

Indexed as

Cardiac Pacing, ArtificialPacemaker, ArtificialAgedFemaleHeart BlockHumansMaleMiddle AgedPostoperative ComplicationsReoperationRetrospective StudiesRiskTime Factors

Identifiers

PMID9616348
PMCPMC1728671

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