The phrase "a narrow complex" is correct and usable in written English.
It can be used in contexts such as medical terminology, particularly in cardiology, to describe a specific type of heart rhythm or electrical activity.
Example: "The ECG showed a narrow complex tachycardia, indicating a rapid heart rate with a narrow QRS complex."
Alternatives: "a narrow QRS complex" or "a narrow waveform".
Several hours later, the patient was noted to be pulseless in the setting of a narrow complex rhythm.
A narrow complex on the ECG suggests that a mechanical problem is impairing right ventricular inflow or outflow (tamponade, tension pneumothorax, mechanical hyperinflation, and pulmonary embolism).
The ECG shows a narrow complex tachycardia at 190 beats/min with ST-segment depressions in V3 V5.
Dr C Getting back to the ECG, the patient has a narrow complex tachycardia with a rate of 190 beats/min with 2 3 mm ST-segment depressions across the precordium.
Generally, it may be distinguished by the width of the QRS complex; a narrow QRS complex suggests nodal block, while a broad QRS complex indicates an infranodal block [1, 2, 9].
It is in the pursuit of the phantasm of objectivity that one winds up unable to call a lie a lie or tries to narrow complex worldviews into two sides.
Finally, the mechanism of ventricular interaction may open new fields of application of left ventricle based pacing in patients who have heart failure, even with a narrow QRS complex.
Dodson said it was fine to talk about other matters around "the narrative of dispossession" but this was a narrow and complex issue which "most of our people have no idea about and have very little opportunity to grapple with, let alone arrive at a consensual view on either one of the … propositions".
However, routine preoperative resting 12-lead electrocardiogram (ECG) revealed a second-degree 2 1 AV block with a narrow QRS complex (0.102 s), heart rate (HR) of 46 bpm, normal axis, and with no ischemic change (Fig. 1).
After discussion with the surgeon and referring cardiologist, we scheduled the surgery without implantation of a temporary pacemaker before surgery for the following reasons: (1) asymptomatic, (2) no evidence of underlying cardiac disease, and (3) a narrow QRS complex.
The acute effects of NES have been evaluated in 18 patients with heart failure and a narrow QRS complex [ 31].
