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Enhanced external counterpulsation, focusing on its effect on kidney function, and utilization in patients with kidney diseases: a systematic review

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Figure 1.

Application of EECP in King Chulalongkorn Memorial Hospital. Each arrow represents the cuff component in a 3-cuff EECP system (with consent from the patient for publication). This is a novel utilization of the device during the hemodialysis session to improve intradialytic hemodynamics. EECP is traditionally applied in subjects not receiving dialysis. EECP, enhanced external counterpulsation.
Application of EECP in King Chulalongkorn Memorial Hospital. Each arrow represents the cuff component in a 3-cuff EECP system (with consent from the patient for publication). This is a novel utilization of the device during the hemodialysis session to improve intradialytic hemodynamics. EECP is traditionally applied in subjects not receiving dialysis. EECP, enhanced external counterpulsation.

Figure 2.

Flowchart of study selection.
Flowchart of study selection.

Figure 3.

Duplex sonography of the renal artery without EECP (A), compared with with EECP treatment (B) demonstrating augmented diastolic flow velocity (arrow), and finger pulse wave pattern without EECP (C), compared with with EECP treatment (D) systolic blood pressure (Ps), diastolic blood pressure (Pd), and augmented diastolic blood pressure (Pda). Systolic pressure reduces after EECP treatment and results in decreased cardiac oxygen demand. The FVI measured from duplex sonography also increases upon EECP therapy, reflecting increased blood flow to the artery. The finger plethysmography waveform during the therapy is similar to that from pulse wave analysis. The figure is based on results demonstrated by Applebaum et al. [17]. EECP, enhanced external counterpulsation; FVI, flow velocity integral.
Duplex sonography of the renal artery without EECP (A), compared with with EECP treatment (B) demonstrating augmented diastolic flow velocity (arrow), and finger pulse wave pattern without EECP (C), compared with with EECP treatment (D) systolic blood pressure (Ps), diastolic blood pressure (Pd), and augmented diastolic blood pressure (Pda). Systolic pressure reduces after EECP treatment and results in decreased cardiac oxygen demand. The FVI measured from duplex sonography also increases upon EECP therapy, reflecting increased blood flow to the artery. The finger plethysmography waveform during the therapy is similar to that from pulse wave analysis. The figure is based on results demonstrated by Applebaum et al. [17]. EECP, enhanced external counterpulsation; FVI, flow velocity integral.

MINORS quality assessment of the included studies Enhanced external counterpulsation and kidney

Applebaum 1997 Werner 1999 Werner 2005 Onuigbo 2013 Ruangkanchanasetr 2013 Wu 2014 Zeng 2022
A stated aim of the study 2 2 2 2 2 2 2
Inclusion of consecutive patients 1 1 1 0 2 2 2
Prospective collection of data 2 2 2 2 2 2 0
Endpoint appropriate to the study aim 2 2 2 2 2 2 2
Unbiased assessment of endpoints 1 1 1 0 1 1 2
Follow-up period appropriate to the major endpoint 2 2 1 2 2 2 1
Loss to follow-up not exceeding 5% 2 2 2 2 2 0 2
Prospective calculation of the study size 0 0 0 0 2 0 1
Total 12 12 11 10 15 11 12

Characteristics of the included studies

Study Country Design Included patients Sample size (n) EECP therapy Contraindication for EECP or exclusion criteria Outcome and measurement
Applebaum et al. [17] United States and India Pre- and post-procedure comparison (no control group) Atherosclerotic heart disease, age 55 ± 8 years 18 (male, 78%)

Machine: Cardiomedics, Inc., Irvine, California

2 flexible cuffs

Cuff pressure up to a point at which the peak diastolic pressure wave reached the height of the systolic pressure wave on the finger plethysmography (150–180 mmHg for most patients)

1 session, duration 30 min

History of recent lower extremity thrombophlebitis, severe ischemia, or trauma including surgical incision and amputation

Moderate to severe aortic regurgitation

Severe congestive heart failure

Uncontrolled hypertension

Uncontrolled arrhythmia

Thrombolytic or anticoagulation agents use

Renal artery blood flow, measured every 5 minutes during and immediately after the counterpulsation with duplex ultrasonography (angle correction of ≤60°)
Werner et al. [18] Germany Pre- and post-procedure comparison (no control group) Healthy volunteers, age 28 ± 4 years 16

Machine: Vasomedical Inc., Westbury, New York, and Cardiomedics Inc., Irvine, California

2 cuffs (calves and thighs)

Cuff pressure of 200 mmHg

1 session, duration 1 h

No available data Changes in flow volume in carotid, vertebral, hepatic, renal, and internal iliac arteries, measured by duplex ultrasonography
Werner et al. [19] Germany Pre- and post-procedure comparison in (1) cirrhotic patients and (2) healthy subjects

Cirrhotic patients diagnosed by hepatologists, age 54.4 ± 10.5 years

Healthy subjects, age 23.7 ± 2.5 years

16 cirrhotic patients and 12 healthy subjects (male, 50%)

Machine: Vasomedical Inc., Westbury, New York

2 cuffs (calves and upper thighs)

Cuff pressure of 250–300 mmHg

1 session (performed in the early afternoon), duration 2 h

Aortic regurgitation

Aortic aneurysm

Atrial fibrillation

Deep venous thrombosis, leg ulcer, marked peripheral edema

INR >2 (Screened by electrocardiogram, echocardiogram, and duplex sonography of the lower extremities)

GFR by inulin clearance (continuous infusion)

Renal plasma flow by aminohippurate sodium clearance (continuous infusion)

Continuous radial artery blood pressure, monitored by vascular unloading technique

Plasma concentrations of endothelin-1, measured by ELISA kit

Plasma concentrations of renin, ANP, ADH, epinephrine and N-epinephrine, measured by radioimmunoassay

Urinary volume determined every 30 min

Urinary excretion rates of sodium and chloride, measured by flame photometry

Urinary osmolality, measured by freezing point depression

Onuigbo [20] United States Case series Hemodialysis patients with IDH and hypoalbuminemia refractory to conventional treatments 3 Using sequential compression device as a mini-EECP

Machine: Flowtron Excel deep venous thrombosis prophylaxis system (Huntleigh Healthcare, Poland)

Cuff pressures of 40 mmHg

The cuff is applied to the calves throughout the hemodialysis session, and inflation of the cuffs is alternated between both calves every other minute.

Not stated

Achieved ultrafiltration volume in the dialysis sessions

Patient tolerability and IDH episodes

Ruangkanchanasetr et al. [21] Thailand Longitudinal pre- and post-procedure comparison (no control group) Age ≥18 years with chronic stable angina and/or heart failure 30 (male, 76.7%, chronic angina 76.7%, heart failure 23.3%)

Machine: Vasomedical Inc., Westbury, New York

35 sessions of 1-h daily EECP treatment over a period of 7–8 weeks

Cuff pressure and amount: not specify

Unstable angina, acute myocardial Infarction, decompensated heart failure in the preceding one month

Undergoing coronary angiography or coronary artery bypass grafting in the preceding 1 month

Blood pressure >180/110 mmHg

Severe symptomatic peripheral vascular disease

GFR <15 mL/min/1.73 m2

Serum creatinine, measured by enzymatic methods

Serum cystatin C, measured by particle-enhanced immunonephelometric assay

Estimated GFR using combination of serum creatinine and cystatin C

NT-proBNP, measured by a sandwich immunoassay

Non-invasive blood pressure measurement (The median follow-up time after starting EECP treatment was 16 months)

Wu et al. [22] Taiwan Longitudinal pre- and post-procedure comparison (no control group) Hemodialysis patients with coronary artery disease and angina refractory to medical treatment and unable or unwilling for revascularization 36 (male, 61.3%)

Machine: Vasomedical Inc., Westbury, New York

Duration of 1- or 2-h daily EECP treatment for 5 days per week to reach total of 35 h

Cuff pressures of 260–300 mmHg to achieve mean peak diastolic augmentation of 1.6

Significant aortic regurgitation

Abdominal aortic aneurysm (Screened by echocardiography and abdominal sonography)

Angina symptom, measured by Canadian Cardiovascular Society Angina Grading scale

Angina medications

Myocardial perfusion, assessed by Thallium-201 imaging with pharmacological stress

Cardiovascular events (Assess immediately after complete 35 h of EECP and 1 year after complete the therapy)

Zhang et al. [23] China Randomized, non-sham-controlled Age >18 years undergoing a diagnostic contrast-enhanced computed tomography with estimated GFR using CKD-EPI of 60–89 mL/min/1.73 m2 121 (male, 62%, hypertension 56%, diabetes 27%)

A 1-h session of EECP therapy at 2 h after exposure to the contrast media

Target diastolic/systolic augmentation ratio of 1.0–1.2

Blood pressure >180/100 mmHg

Hemorrhagic disease or bleeding tendency including INR >2

Uncontrolled tachyarrhythmia

Severe aortic insufficiency

Acute heart failure

Arterial dissection or aneurysm

Lower-extremityvenous thrombosis

Infection, pregnancy, thyroid disease, tumor

Recent exposure to contrast media or nephrotoxic drugs

Increase of serum cystatin C ≥10% at 24th h after contrast exposure

Iopromide contrast clearance measurement using plasma concentration of iopromide at 2nd, and 3rd h

Conventional diagnosis of contrast-induced kidney injury using serum creatinine concentration at 48th h

Adverse clinical events

Zeng et al. [24] China Prospective cohort, compared with active comparator (standard dose of 0.9% NaCl hydration) Age ≥18 years with estimated GFR <60 mL/min/1.73 m2 not on dialysis; Receiving coronary angiography and percutaneous intervention 230 (male, 76%, diabetes 36.1%, hypertension 77%, mean estimated GFR 42 mL/min/1.73 m2) A once daily 1-h session of EECP therapy at 24 h before and 48–72 h after the intervention (1) patients who had used iodinated contrast medium 30 d before inclusion, (2) patients with AKI due to other clear causes, (3) patients requesting withdrawal, (4) patients who failed to receive the re-examination of renal function indicators on time after surgery, (5) patients who underwent hemodialysis within 48 h after surgery, and (6) patients with uremia who received long-term hemodialysis. Serum creatinine increase ≥0.3, ≥0.5 mg/dL or ≥25% relative to baseline value within 48–72 h after iodinated contrast exposure
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Medicine, Assistive Professions, Nursing, Basic Medical Science, other, Clinical Medicine