Table 3

Summary of Case Studies Included in Qualitative Synthesis

Study (year)Age (years), sexBisphosphonate (dose)IndicationReported QT changeCalciumaTime of BP infusion before ECGReported arrhythmia
Aldave & Jaiswal (2014)73, womanZAMultiple myelomaProlongation (500 ms)Hypocalcemia (0.66 mmol/L – ionized)11 daysNone reported
Bonilla et al. (2014)55, womanIbandronateN/AProlongation (575 ms)Normal15 daysNon‐sustained polymorphic VT, ventricular ectopy
Mishra, Wong & Jonklaas (2001)62, womanPamidronate (90 mg)Thyroid cancer with bone metastasesProlongation (unknown)Hypocalcemia (0.10 mmol/L – ionized)35 daysJunctional rhythm
Patel, Brahmbatt & Ramu (2005)74, manZAProstate cancer with bone metastasesProlongation (>500 ms)Hypocalcemia (0.19 mmol/L – serum)4 daysNone reported
Varma & Kerrigan (1993)71, womanPamidronate (30 mg)Hypercalcemia of malignancyProlongation (550 ms)Hypocalcemia (1.8 mmol/L – serum)b15/19 dayscSinus rhythm
Study (year)Age (years), sexBisphosphonate (dose)IndicationReported QT changeCalciumaTime of BP infusion before ECGReported arrhythmia
Aldave & Jaiswal (2014)73, womanZAMultiple myelomaProlongation (500 ms)Hypocalcemia (0.66 mmol/L – ionized)11 daysNone reported
Bonilla et al. (2014)55, womanIbandronateN/AProlongation (575 ms)Normal15 daysNon‐sustained polymorphic VT, ventricular ectopy
Mishra, Wong & Jonklaas (2001)62, womanPamidronate (90 mg)Thyroid cancer with bone metastasesProlongation (unknown)Hypocalcemia (0.10 mmol/L – ionized)35 daysJunctional rhythm
Patel, Brahmbatt & Ramu (2005)74, manZAProstate cancer with bone metastasesProlongation (>500 ms)Hypocalcemia (0.19 mmol/L – serum)4 daysNone reported
Varma & Kerrigan (1993)71, womanPamidronate (30 mg)Hypercalcemia of malignancyProlongation (550 ms)Hypocalcemia (1.8 mmol/L – serum)b15/19 dayscSinus rhythm

Abbreviations: BP = bisphosphonate; ECG = electrocardiogram; VT = ventricular tachycardia; ZA = zoledronic acid.

a

Values that were provided in mg/dL were converted to mmol/L as 1 mg/dL = 0.055 mmol/L.

b

Patient received two doses of pamidronate (30 mg) 15 and 19 days before ECG.

c

Days 12 to 19 of admission.

Table 3

Summary of Case Studies Included in Qualitative Synthesis

Study (year)Age (years), sexBisphosphonate (dose)IndicationReported QT changeCalciumaTime of BP infusion before ECGReported arrhythmia
Aldave & Jaiswal (2014)73, womanZAMultiple myelomaProlongation (500 ms)Hypocalcemia (0.66 mmol/L – ionized)11 daysNone reported
Bonilla et al. (2014)55, womanIbandronateN/AProlongation (575 ms)Normal15 daysNon‐sustained polymorphic VT, ventricular ectopy
Mishra, Wong & Jonklaas (2001)62, womanPamidronate (90 mg)Thyroid cancer with bone metastasesProlongation (unknown)Hypocalcemia (0.10 mmol/L – ionized)35 daysJunctional rhythm
Patel, Brahmbatt & Ramu (2005)74, manZAProstate cancer with bone metastasesProlongation (>500 ms)Hypocalcemia (0.19 mmol/L – serum)4 daysNone reported
Varma & Kerrigan (1993)71, womanPamidronate (30 mg)Hypercalcemia of malignancyProlongation (550 ms)Hypocalcemia (1.8 mmol/L – serum)b15/19 dayscSinus rhythm
Study (year)Age (years), sexBisphosphonate (dose)IndicationReported QT changeCalciumaTime of BP infusion before ECGReported arrhythmia
Aldave & Jaiswal (2014)73, womanZAMultiple myelomaProlongation (500 ms)Hypocalcemia (0.66 mmol/L – ionized)11 daysNone reported
Bonilla et al. (2014)55, womanIbandronateN/AProlongation (575 ms)Normal15 daysNon‐sustained polymorphic VT, ventricular ectopy
Mishra, Wong & Jonklaas (2001)62, womanPamidronate (90 mg)Thyroid cancer with bone metastasesProlongation (unknown)Hypocalcemia (0.10 mmol/L – ionized)35 daysJunctional rhythm
Patel, Brahmbatt & Ramu (2005)74, manZAProstate cancer with bone metastasesProlongation (>500 ms)Hypocalcemia (0.19 mmol/L – serum)4 daysNone reported
Varma & Kerrigan (1993)71, womanPamidronate (30 mg)Hypercalcemia of malignancyProlongation (550 ms)Hypocalcemia (1.8 mmol/L – serum)b15/19 dayscSinus rhythm

Abbreviations: BP = bisphosphonate; ECG = electrocardiogram; VT = ventricular tachycardia; ZA = zoledronic acid.

a

Values that were provided in mg/dL were converted to mmol/L as 1 mg/dL = 0.055 mmol/L.

b

Patient received two doses of pamidronate (30 mg) 15 and 19 days before ECG.

c

Days 12 to 19 of admission.

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